diff --git a/01-intro-shell.html b/01-intro-shell.html
index 2123d672..b3ff720f 100644
--- a/01-intro-shell.html
+++ b/01-intro-shell.html
@@ -427,7 +427,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://librarycarpentry.github.io/lc-shell/01-intro-shell.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-02"
+  "datePublished": "2024-01-09"
 }
 
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diff --git a/02-navigating-the-filesystem.html b/02-navigating-the-filesystem.html
index 4b404951..66ce9f2e 100644
--- a/02-navigating-the-filesystem.html
+++ b/02-navigating-the-filesystem.html
@@ -506,7 +506,7 @@ <h3 class="callout-title">Getting help<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb14">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -581,7 +581,7 @@ <h3 class="callout-title">Find out about advanced<code>ls</code>commands<a class
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   <h4 class="accordion-header" id="headingSolution2">Answer</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>To order files in a directory by their filesize, in combination with
 the <code>-l</code> argument:</p>
@@ -674,7 +674,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2018-04-12",
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diff --git a/03-working-with-files-and-folders.html b/03-working-with-files-and-folders.html
index c2b82546..e736f03b 100644
--- a/03-working-with-files-and-folders.html
+++ b/03-working-with-files-and-folders.html
@@ -599,7 +599,7 @@ <h3 class="callout-title">Copying a file<a class="anchor" aria-label="anchor" hr
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
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-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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@@ -629,7 +629,7 @@ <h3 class="callout-title">Renaming a directory<a class="anchor" aria-label="anch
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-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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@@ -661,7 +661,7 @@ <h3 class="callout-title">Moving a file into a directory<a class="anchor" aria-l
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-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
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 <div class="codewrapper sourceCode" id="cb23">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -700,7 +700,7 @@ <h3 class="callout-title">The wildcards and regular expressions<a class="anchor"
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 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <ul><li>The <code>?</code> wildcard matches the regular expression
 <code>.</code> (a dot)</li>
@@ -773,7 +773,7 @@ <h3 class="callout-title">Using the<code>echo</code>command<a class="anchor" ari
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
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 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <p>You may think there is not much value in such a basic command like
 <code>echo</code>. However, from the moment you start writing automated
@@ -869,7 +869,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateModified": "2023-11-29",
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diff --git a/04-loops.html b/04-loops.html
index 3c8372ce..50a914fb 100644
--- a/04-loops.html
+++ b/04-loops.html
@@ -450,7 +450,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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   "dateCreated": "2018-04-12",
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diff --git a/05-counting-mining.html b/05-counting-mining.html
index 45b02bcb..e96a110a 100644
--- a/05-counting-mining.html
+++ b/05-counting-mining.html
@@ -606,7 +606,7 @@ <h3 class="callout-title">Adding another pipe<a class="anchor" aria-label="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The <code>cat</code> command just outputs whatever it gets as input,
 so you get exactly the same output from</p>
@@ -663,7 +663,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <div class="accordion-body">
 <p>Here we use the <code>wc</code> command with the <code>-w</code>
 (word) flag on all <code>tsv</code> files, <code>sort</code> them and
@@ -698,7 +698,7 @@ <h3 class="callout-title">Counting number of files<a class="anchor" aria-label="
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   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
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-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
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 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <p>From <code>man wc</code>, you will see that there is a
 <code>-w</code> flag to print the number of words:</p>
@@ -1014,7 +1014,7 @@ <h3 class="callout-title">Automatically adding a date prefix<a class="anchor" ar
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 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <p>Using <code>date --help</code> (on Git Bash for Windows or Linux) or
 <code>man date</code> (on macOS or Linux) will show you that the
@@ -1091,7 +1091,7 @@ <h3 class="callout-title">Case sensitive search<a class="anchor" aria-label="anc
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 </button>
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   <h4 class="accordion-header" id="headingSolution13">Show me the solution</h4>
 </button>
-<div id="collapseSolution13" class="accordion-collapse collapse" data-bs-parent="#accordionSolution13" aria-labelledby="headingSolution13">
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 </button>
-<div id="collapseSolution14" class="accordion-collapse collapse" data-bs-parent="#accordionSolution14" aria-labelledby="headingSolution14">
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@@ -1322,7 +1322,7 @@ <h3 class="callout-title">Finding unique values<a class="anchor" aria-label="anc
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   <h4 class="accordion-header" id="headingSolution15">Show me the solution</h4>
 </button>
-<div id="collapseSolution15" class="accordion-collapse collapse" data-bs-parent="#accordionSolution15" aria-labelledby="headingSolution15">
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 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb60">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1417,7 +1417,7 @@ <h3 class="callout-title">Why are the variables double-quoted here?<a class="anc
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 </button>
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+<div id="collapseSolution16" class="accordion-collapse collapse" aria-labelledby="headingSolution16" data-bs-parent="#accordionSolution16">
 <div class="accordion-body">
 <ol style="list-style-type: lower-alpha"><li><p>Because we are explicitly listing the names after
 <code>in</code>, and those contain no white-space. However, for
@@ -1498,7 +1498,7 @@ <h3 id="now-your-turn">Now your turn<a class="anchor" aria-label="anchor" href="
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   <h4 class="accordion-header" id="headingSolution17">Show me the solution</h4>
 </button>
-<div id="collapseSolution17" class="accordion-collapse collapse" data-bs-parent="#accordionSolution17" aria-labelledby="headingSolution17">
+<div id="collapseSolution17" class="accordion-collapse collapse" aria-labelledby="headingSolution17" data-bs-parent="#accordionSolution17">
 <div class="accordion-body">
 <p>First, let’s see where our desired columns are:</p>
 <div class="codewrapper sourceCode" id="cb68">
@@ -1606,7 +1606,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2018-04-12",
   "dateModified": "2023-11-29",
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+  "datePublished": "2024-01-09"
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diff --git a/06-free-text.html b/06-free-text.html
index 2c4ca7ee..a7305a31 100644
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 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -860,7 +860,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://librarycarpentry.github.io/lc-shell/06-free-text.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-02"
+  "datePublished": "2024-01-09"
 }
 
   </script><script>
diff --git a/404.html b/404.html
index 95402c7c..9f8d7f7e 100644
--- a/404.html
+++ b/404.html
@@ -308,8 +308,8 @@ <h1>Page not found</h1>
   "url": "https://librarycarpentry.github.io/lc-shell/404.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/404.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-01-02",
-  "datePublished": "2024-01-02"
+  "dateModified": "2024-01-09",
+  "datePublished": "2024-01-09"
 }
 
   </script><script>
diff --git a/CODE_OF_CONDUCT.html b/CODE_OF_CONDUCT.html
index 4c20fd6a..47d11518 100644
--- a/CODE_OF_CONDUCT.html
+++ b/CODE_OF_CONDUCT.html
@@ -328,7 +328,7 @@ <h1>Contributor Code of Conduct</h1>
   "identifier": "https://librarycarpentry.github.io/lc-shell/CODE_OF_CONDUCT.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-02"
+  "datePublished": "2024-01-09"
 }
 
   </script><script>
diff --git a/LICENSE.html b/LICENSE.html
index 6b57c747..2693ff4c 100644
--- a/LICENSE.html
+++ b/LICENSE.html
@@ -379,7 +379,7 @@ <h1>Licenses</h1>
   "identifier": "https://librarycarpentry.github.io/lc-shell/LICENSE.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-02"
+  "datePublished": "2024-01-09"
 }
 
   </script><script>
diff --git a/aio.html b/aio.html
index 4bd1eff3..15500ed8 100644
--- a/aio.html
+++ b/aio.html
@@ -660,7 +660,7 @@ <h3 class="callout-title">Getting help<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Answer</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb14">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -735,7 +735,7 @@ <h3 class="callout-title">Find out about advanced<code>ls</code>commands<a class
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Answer</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>To order files in a directory by their filesize, in combination with
 the <code>-l</code> argument:</p>
@@ -1114,7 +1114,7 @@ <h3 class="callout-title">Copying a file<a class="anchor" aria-label="anchor" hr
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Answer</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb21">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1144,7 +1144,7 @@ <h3 class="callout-title">Renaming a directory<a class="anchor" aria-label="anch
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Answer</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb22">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1176,7 +1176,7 @@ <h3 class="callout-title">Moving a file into a directory<a class="anchor" aria-l
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Answer</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb23">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1215,7 +1215,7 @@ <h3 class="callout-title">The wildcards and regular expressions<a class="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Answer</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <ul>
 <li>The <code>?</code> wildcard matches the regular expression
@@ -1290,7 +1290,7 @@ <h3 class="callout-title">Using the<code>echo</code>command<a class="anchor" ari
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Answer</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <p>You may think there is not much value in such a basic command like
 <code>echo</code>. However, from the moment you start writing automated
@@ -1521,7 +1521,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb6">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1942,7 +1942,7 @@ <h3 class="callout-title">Adding another pipe<a class="anchor" aria-label="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The <code>cat</code> command just outputs whatever it gets as input,
 so you get exactly the same output from</p>
@@ -1999,7 +1999,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Here we use the <code>wc</code> command with the <code>-w</code>
 (word) flag on all <code>tsv</code> files, <code>sort</code> them and
@@ -2034,7 +2034,7 @@ <h3 class="callout-title">Counting number of files<a class="anchor" aria-label="
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb29">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2064,7 +2064,7 @@ <h3 class="callout-title">Writing to files<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb30">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2099,7 +2099,7 @@ <h3 class="callout-title">Appending to a file<a class="anchor" aria-label="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb31">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2132,7 +2132,7 @@ <h3 class="callout-title">Counting the number of words<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <p>From <code>man wc</code>, you will see that there is a
 <code>-w</code> flag to print the number of words:</p>
@@ -2351,7 +2351,7 @@ <h3 class="callout-title">Automatically adding a date prefix<a class="anchor" ar
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <p>Using <code>date --help</code> (on Git Bash for Windows or Linux) or
 <code>man date</code> (on macOS or Linux) will show you that the
@@ -2428,7 +2428,7 @@ <h3 class="callout-title">Case sensitive search<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
   <h4 class="accordion-header" id="headingSolution8">Show me the solution</h4>
 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
+<div id="collapseSolution8" class="accordion-collapse collapse" aria-labelledby="headingSolution8" data-bs-parent="#accordionSolution8">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb52">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2458,7 +2458,7 @@ <h3 class="callout-title">Case sensitive search in select files<a class="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution9" aria-expanded="false" aria-controls="collapseSolution9">
   <h4 class="accordion-header" id="headingSolution9">Show me the solution</h4>
 </button>
-<div id="collapseSolution9" class="accordion-collapse collapse" data-bs-parent="#accordionSolution9" aria-labelledby="headingSolution9">
+<div id="collapseSolution9" class="accordion-collapse collapse" aria-labelledby="headingSolution9" data-bs-parent="#accordionSolution9">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb53">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2488,7 +2488,7 @@ <h3 class="callout-title">Count words (case sensitive)<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution10" aria-expanded="false" aria-controls="collapseSolution10">
   <h4 class="accordion-header" id="headingSolution10">Show me the solution</h4>
 </button>
-<div id="collapseSolution10" class="accordion-collapse collapse" data-bs-parent="#accordionSolution10" aria-labelledby="headingSolution10">
+<div id="collapseSolution10" class="accordion-collapse collapse" aria-labelledby="headingSolution10" data-bs-parent="#accordionSolution10">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb54">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2518,7 +2518,7 @@ <h3 class="callout-title">Count words (case insensitive)<a class="anchor" aria-l
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution11" aria-expanded="false" aria-controls="collapseSolution11">
   <h4 class="accordion-header" id="headingSolution11">Show me the solution</h4>
 </button>
-<div id="collapseSolution11" class="accordion-collapse collapse" data-bs-parent="#accordionSolution11" aria-labelledby="headingSolution11">
+<div id="collapseSolution11" class="accordion-collapse collapse" aria-labelledby="headingSolution11" data-bs-parent="#accordionSolution11">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb55">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2548,7 +2548,7 @@ <h3 class="callout-title">Case insensitive search in select files<a class="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution12" aria-expanded="false" aria-controls="collapseSolution12">
   <h4 class="accordion-header" id="headingSolution12">Show me the solution</h4>
 </button>
-<div id="collapseSolution12" class="accordion-collapse collapse" data-bs-parent="#accordionSolution12" aria-labelledby="headingSolution12">
+<div id="collapseSolution12" class="accordion-collapse collapse" aria-labelledby="headingSolution12" data-bs-parent="#accordionSolution12">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb56">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2579,7 +2579,7 @@ <h3 class="callout-title">Case insensitive search in select files (whole
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution13" aria-expanded="false" aria-controls="collapseSolution13">
   <h4 class="accordion-header" id="headingSolution13">Show me the solution</h4>
 </button>
-<div id="collapseSolution13" class="accordion-collapse collapse" data-bs-parent="#accordionSolution13" aria-labelledby="headingSolution13">
+<div id="collapseSolution13" class="accordion-collapse collapse" aria-labelledby="headingSolution13" data-bs-parent="#accordionSolution13">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb57">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2612,7 +2612,7 @@ <h3 class="callout-title">Searching with regular expressions<a class="anchor" ar
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution14" aria-expanded="false" aria-controls="collapseSolution14">
   <h4 class="accordion-header" id="headingSolution14">Show me the solution</h4>
 </button>
-<div id="collapseSolution14" class="accordion-collapse collapse" data-bs-parent="#accordionSolution14" aria-labelledby="headingSolution14">
+<div id="collapseSolution14" class="accordion-collapse collapse" aria-labelledby="headingSolution14" data-bs-parent="#accordionSolution14">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb58">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2659,7 +2659,7 @@ <h3 class="callout-title">Finding unique values<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution15" aria-expanded="false" aria-controls="collapseSolution15">
   <h4 class="accordion-header" id="headingSolution15">Show me the solution</h4>
 </button>
-<div id="collapseSolution15" class="accordion-collapse collapse" data-bs-parent="#accordionSolution15" aria-labelledby="headingSolution15">
+<div id="collapseSolution15" class="accordion-collapse collapse" aria-labelledby="headingSolution15" data-bs-parent="#accordionSolution15">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb60">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2759,7 +2759,7 @@ <h3 class="callout-title">Why are the variables double-quoted here?<a class="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution16" aria-expanded="false" aria-controls="collapseSolution16">
   <h4 class="accordion-header" id="headingSolution16">Solutions</h4>
 </button>
-<div id="collapseSolution16" class="accordion-collapse collapse" data-bs-parent="#accordionSolution16" aria-labelledby="headingSolution16">
+<div id="collapseSolution16" class="accordion-collapse collapse" aria-labelledby="headingSolution16" data-bs-parent="#accordionSolution16">
 <div class="accordion-body">
 <ol style="list-style-type: lower-alpha">
 <li><p>Because we are explicitly listing the names after
@@ -2843,7 +2843,7 @@ <h3 id="now-your-turn">Now your turn<a class="anchor" aria-label="anchor" href="
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution17" aria-expanded="false" aria-controls="collapseSolution17">
   <h4 class="accordion-header" id="headingSolution17">Show me the solution</h4>
 </button>
-<div id="collapseSolution17" class="accordion-collapse collapse" data-bs-parent="#accordionSolution17" aria-labelledby="headingSolution17">
+<div id="collapseSolution17" class="accordion-collapse collapse" aria-labelledby="headingSolution17" data-bs-parent="#accordionSolution17">
 <div class="accordion-body">
 <p>First, let’s see where our desired columns are:</p>
 <div class="codewrapper sourceCode" id="cb68">
@@ -3120,7 +3120,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb10">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3496,8 +3496,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "url": "https://librarycarpentry.github.io/lc-shell/aio.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/aio.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-01-02",
-  "datePublished": "2024-01-02"
+  "dateModified": "2024-01-09",
+  "datePublished": "2024-01-09"
 }
 
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diff --git a/contribute.html b/contribute.html
index d6e7b31b..68d0ce13 100644
--- a/contribute.html
+++ b/contribute.html
@@ -331,7 +331,7 @@ <h1>Contribute</h1>
   "identifier": "https://librarycarpentry.github.io/lc-shell/contribute.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-08-29",
-  "datePublished": "2024-01-02"
+  "datePublished": "2024-01-09"
 }
 
   </script><script>
diff --git a/discuss.html b/discuss.html
index c83affcc..46c84184 100644
--- a/discuss.html
+++ b/discuss.html
@@ -328,7 +328,7 @@ <h1>Discussion</h1>
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   "dateCreated": "2018-04-12",
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diff --git a/images.html b/images.html
index 1e355b74..64dcd4f6 100644
--- a/images.html
+++ b/images.html
@@ -359,8 +359,8 @@ <h3 id="05-counting-mining-figure-1">Figure 1</h3>
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   "dateCreated": "2018-04-12",
-  "dateModified": "2024-01-02",
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 }
 
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diff --git a/index.html b/index.html
index 69b82250..308afb17 100644
--- a/index.html
+++ b/index.html
@@ -417,8 +417,8 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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   "dateCreated": "2018-04-12",
-  "dateModified": "2024-01-02",
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diff --git a/instructor-notes.html b/instructor-notes.html
index 550bd156..22ec2a24 100644
--- a/instructor-notes.html
+++ b/instructor-notes.html
@@ -662,8 +662,8 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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   "dateCreated": "2018-04-12",
-  "dateModified": "2024-01-02",
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 }
 
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diff --git a/instructor/01-intro-shell.html b/instructor/01-intro-shell.html
index a960ba6f..93561fe9 100644
--- a/instructor/01-intro-shell.html
+++ b/instructor/01-intro-shell.html
@@ -429,7 +429,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2018-04-12",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-02"
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diff --git a/instructor/02-navigating-the-filesystem.html b/instructor/02-navigating-the-filesystem.html
index 1e5a7646..595cf976 100644
--- a/instructor/02-navigating-the-filesystem.html
+++ b/instructor/02-navigating-the-filesystem.html
@@ -508,7 +508,7 @@ <h3 class="callout-title">Getting help<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Answer</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb14">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -583,7 +583,7 @@ <h3 class="callout-title">Find out about advanced<code>ls</code>commands<a class
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Answer</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>To order files in a directory by their filesize, in combination with
 the <code>-l</code> argument:</p>
@@ -676,7 +676,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2018-04-12",
   "dateModified": "2023-11-29",
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diff --git a/instructor/03-working-with-files-and-folders.html b/instructor/03-working-with-files-and-folders.html
index e306053d..0ce03fbc 100644
--- a/instructor/03-working-with-files-and-folders.html
+++ b/instructor/03-working-with-files-and-folders.html
@@ -601,7 +601,7 @@ <h3 class="callout-title">Copying a file<a class="anchor" aria-label="anchor" hr
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Answer</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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 <div class="codewrapper sourceCode" id="cb21">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -631,7 +631,7 @@ <h3 class="callout-title">Renaming a directory<a class="anchor" aria-label="anch
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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@@ -663,7 +663,7 @@ <h3 class="callout-title">Moving a file into a directory<a class="anchor" aria-l
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 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb23">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -702,7 +702,7 @@ <h3 class="callout-title">The wildcards and regular expressions<a class="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Answer</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <ul><li>The <code>?</code> wildcard matches the regular expression
 <code>.</code> (a dot)</li>
@@ -775,7 +775,7 @@ <h3 class="callout-title">Using the<code>echo</code>command<a class="anchor" ari
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Answer</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <p>You may think there is not much value in such a basic command like
 <code>echo</code>. However, from the moment you start writing automated
@@ -871,7 +871,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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-  "datePublished": "2024-01-02"
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diff --git a/instructor/04-loops.html b/instructor/04-loops.html
index 6cfc99da..fc5290cd 100644
--- a/instructor/04-loops.html
+++ b/instructor/04-loops.html
@@ -452,7 +452,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 <div class="codewrapper sourceCode" id="cb6">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -583,7 +583,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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diff --git a/instructor/05-counting-mining.html b/instructor/05-counting-mining.html
index ba7a52a5..d4e618c7 100644
--- a/instructor/05-counting-mining.html
+++ b/instructor/05-counting-mining.html
@@ -608,7 +608,7 @@ <h3 class="callout-title">Adding another pipe<a class="anchor" aria-label="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The <code>cat</code> command just outputs whatever it gets as input,
 so you get exactly the same output from</p>
@@ -665,7 +665,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Here we use the <code>wc</code> command with the <code>-w</code>
 (word) flag on all <code>tsv</code> files, <code>sort</code> them and
@@ -700,7 +700,7 @@ <h3 class="callout-title">Counting number of files<a class="anchor" aria-label="
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
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 <div class="codewrapper sourceCode" id="cb29">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -730,7 +730,7 @@ <h3 class="callout-title">Writing to files<a class="anchor" aria-label="anchor"
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 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
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 <div class="codewrapper sourceCode" id="cb30">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -765,7 +765,7 @@ <h3 class="callout-title">Appending to a file<a class="anchor" aria-label="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
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 <div class="codewrapper sourceCode" id="cb31">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -798,7 +798,7 @@ <h3 class="callout-title">Counting the number of words<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <p>From <code>man wc</code>, you will see that there is a
 <code>-w</code> flag to print the number of words:</p>
@@ -1016,7 +1016,7 @@ <h3 class="callout-title">Automatically adding a date prefix<a class="anchor" ar
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
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 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <p>Using <code>date --help</code> (on Git Bash for Windows or Linux) or
 <code>man date</code> (on macOS or Linux) will show you that the
@@ -1093,7 +1093,7 @@ <h3 class="callout-title">Case sensitive search<a class="anchor" aria-label="anc
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 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
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 <div class="codewrapper sourceCode" id="cb52">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
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   <h4 class="accordion-header" id="headingSolution9">Show me the solution</h4>
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 <div class="codewrapper sourceCode" id="cb53">
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@@ -1153,7 +1153,7 @@ <h3 class="callout-title">Count words (case sensitive)<a class="anchor" aria-lab
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 </button>
-<div id="collapseSolution10" class="accordion-collapse collapse" data-bs-parent="#accordionSolution10" aria-labelledby="headingSolution10">
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 <div class="codewrapper sourceCode" id="cb54">
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@@ -1183,7 +1183,7 @@ <h3 class="callout-title">Count words (case insensitive)<a class="anchor" aria-l
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 </button>
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 <div class="codewrapper sourceCode" id="cb55">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1213,7 +1213,7 @@ <h3 class="callout-title">Case insensitive search in select files<a class="ancho
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   <h4 class="accordion-header" id="headingSolution12">Show me the solution</h4>
 </button>
-<div id="collapseSolution12" class="accordion-collapse collapse" data-bs-parent="#accordionSolution12" aria-labelledby="headingSolution12">
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 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb56">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1244,7 +1244,7 @@ <h3 class="callout-title">Case insensitive search in select files (whole
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   <h4 class="accordion-header" id="headingSolution13">Show me the solution</h4>
 </button>
-<div id="collapseSolution13" class="accordion-collapse collapse" data-bs-parent="#accordionSolution13" aria-labelledby="headingSolution13">
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 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb57">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1277,7 +1277,7 @@ <h3 class="callout-title">Searching with regular expressions<a class="anchor" ar
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution14" aria-expanded="false" aria-controls="collapseSolution14">
   <h4 class="accordion-header" id="headingSolution14">Show me the solution</h4>
 </button>
-<div id="collapseSolution14" class="accordion-collapse collapse" data-bs-parent="#accordionSolution14" aria-labelledby="headingSolution14">
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 <div class="codewrapper sourceCode" id="cb58">
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@@ -1324,7 +1324,7 @@ <h3 class="callout-title">Finding unique values<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution15" aria-expanded="false" aria-controls="collapseSolution15">
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 </button>
-<div id="collapseSolution15" class="accordion-collapse collapse" data-bs-parent="#accordionSolution15" aria-labelledby="headingSolution15">
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@@ -1419,7 +1419,7 @@ <h3 class="callout-title">Why are the variables double-quoted here?<a class="anc
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   <h4 class="accordion-header" id="headingSolution16">Solutions</h4>
 </button>
-<div id="collapseSolution16" class="accordion-collapse collapse" data-bs-parent="#accordionSolution16" aria-labelledby="headingSolution16">
+<div id="collapseSolution16" class="accordion-collapse collapse" aria-labelledby="headingSolution16" data-bs-parent="#accordionSolution16">
 <div class="accordion-body">
 <ol style="list-style-type: lower-alpha"><li><p>Because we are explicitly listing the names after
 <code>in</code>, and those contain no white-space. However, for
@@ -1500,7 +1500,7 @@ <h3 id="now-your-turn">Now your turn<a class="anchor" aria-label="anchor" href="
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution17" aria-expanded="false" aria-controls="collapseSolution17">
   <h4 class="accordion-header" id="headingSolution17">Show me the solution</h4>
 </button>
-<div id="collapseSolution17" class="accordion-collapse collapse" data-bs-parent="#accordionSolution17" aria-labelledby="headingSolution17">
+<div id="collapseSolution17" class="accordion-collapse collapse" aria-labelledby="headingSolution17" data-bs-parent="#accordionSolution17">
 <div class="accordion-body">
 <p>First, let’s see where our desired columns are:</p>
 <div class="codewrapper sourceCode" id="cb68">
@@ -1608,7 +1608,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/05-counting-mining.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-11-29",
-  "datePublished": "2024-01-02"
+  "datePublished": "2024-01-09"
 }
 
   </script><script>
diff --git a/instructor/06-free-text.html b/instructor/06-free-text.html
index 835ac347..de65e097 100644
--- a/instructor/06-free-text.html
+++ b/instructor/06-free-text.html
@@ -486,7 +486,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb10">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -862,7 +862,7 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/06-free-text.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-02"
+  "datePublished": "2024-01-09"
 }
 
   </script><script>
diff --git a/instructor/404.html b/instructor/404.html
index 0029e116..d22d9cc5 100644
--- a/instructor/404.html
+++ b/instructor/404.html
@@ -308,8 +308,8 @@ <h1>Page not found</h1>
   "url": "https://librarycarpentry.github.io/lc-shell/instructor/404.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/404.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-01-02",
-  "datePublished": "2024-01-02"
+  "dateModified": "2024-01-09",
+  "datePublished": "2024-01-09"
 }
 
   </script><script>
diff --git a/instructor/CODE_OF_CONDUCT.html b/instructor/CODE_OF_CONDUCT.html
index 4d7251dd..b90d8f10 100644
--- a/instructor/CODE_OF_CONDUCT.html
+++ b/instructor/CODE_OF_CONDUCT.html
@@ -330,7 +330,7 @@ <h1>Contributor Code of Conduct</h1>
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/CODE_OF_CONDUCT.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-02"
+  "datePublished": "2024-01-09"
 }
 
   </script><script>
diff --git a/instructor/LICENSE.html b/instructor/LICENSE.html
index a5fa9238..8dfc3393 100644
--- a/instructor/LICENSE.html
+++ b/instructor/LICENSE.html
@@ -381,7 +381,7 @@ <h1>Licenses</h1>
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/LICENSE.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-01-02"
+  "datePublished": "2024-01-09"
 }
 
   </script><script>
diff --git a/instructor/aio.html b/instructor/aio.html
index 039fb1fc..8dc391a1 100644
--- a/instructor/aio.html
+++ b/instructor/aio.html
@@ -664,7 +664,7 @@ <h3 class="callout-title">Getting help<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Answer</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb14">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -739,7 +739,7 @@ <h3 class="callout-title">Find out about advanced<code>ls</code>commands<a class
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Answer</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>To order files in a directory by their filesize, in combination with
 the <code>-l</code> argument:</p>
@@ -1119,7 +1119,7 @@ <h3 class="callout-title">Copying a file<a class="anchor" aria-label="anchor" hr
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Answer</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb21">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1149,7 +1149,7 @@ <h3 class="callout-title">Renaming a directory<a class="anchor" aria-label="anch
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Answer</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb22">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1181,7 +1181,7 @@ <h3 class="callout-title">Moving a file into a directory<a class="anchor" aria-l
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Answer</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb23">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1220,7 +1220,7 @@ <h3 class="callout-title">The wildcards and regular expressions<a class="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Answer</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <ul>
 <li>The <code>?</code> wildcard matches the regular expression
@@ -1295,7 +1295,7 @@ <h3 class="callout-title">Using the<code>echo</code>command<a class="anchor" ari
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Answer</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <p>You may think there is not much value in such a basic command like
 <code>echo</code>. However, from the moment you start writing automated
@@ -1527,7 +1527,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb6">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1949,7 +1949,7 @@ <h3 class="callout-title">Adding another pipe<a class="anchor" aria-label="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <p>The <code>cat</code> command just outputs whatever it gets as input,
 so you get exactly the same output from</p>
@@ -2006,7 +2006,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Here we use the <code>wc</code> command with the <code>-w</code>
 (word) flag on all <code>tsv</code> files, <code>sort</code> them and
@@ -2041,7 +2041,7 @@ <h3 class="callout-title">Counting number of files<a class="anchor" aria-label="
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb29">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2071,7 +2071,7 @@ <h3 class="callout-title">Writing to files<a class="anchor" aria-label="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb30">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2106,7 +2106,7 @@ <h3 class="callout-title">Appending to a file<a class="anchor" aria-label="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb31">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2139,7 +2139,7 @@ <h3 class="callout-title">Counting the number of words<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <p>From <code>man wc</code>, you will see that there is a
 <code>-w</code> flag to print the number of words:</p>
@@ -2358,7 +2358,7 @@ <h3 class="callout-title">Automatically adding a date prefix<a class="anchor" ar
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <p>Using <code>date --help</code> (on Git Bash for Windows or Linux) or
 <code>man date</code> (on macOS or Linux) will show you that the
@@ -2435,7 +2435,7 @@ <h3 class="callout-title">Case sensitive search<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
   <h4 class="accordion-header" id="headingSolution8">Show me the solution</h4>
 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
+<div id="collapseSolution8" class="accordion-collapse collapse" aria-labelledby="headingSolution8" data-bs-parent="#accordionSolution8">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb52">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2465,7 +2465,7 @@ <h3 class="callout-title">Case sensitive search in select files<a class="anchor"
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution9" aria-expanded="false" aria-controls="collapseSolution9">
   <h4 class="accordion-header" id="headingSolution9">Show me the solution</h4>
 </button>
-<div id="collapseSolution9" class="accordion-collapse collapse" data-bs-parent="#accordionSolution9" aria-labelledby="headingSolution9">
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 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb53">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2495,7 +2495,7 @@ <h3 class="callout-title">Count words (case sensitive)<a class="anchor" aria-lab
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution10" aria-expanded="false" aria-controls="collapseSolution10">
   <h4 class="accordion-header" id="headingSolution10">Show me the solution</h4>
 </button>
-<div id="collapseSolution10" class="accordion-collapse collapse" data-bs-parent="#accordionSolution10" aria-labelledby="headingSolution10">
+<div id="collapseSolution10" class="accordion-collapse collapse" aria-labelledby="headingSolution10" data-bs-parent="#accordionSolution10">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb54">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2525,7 +2525,7 @@ <h3 class="callout-title">Count words (case insensitive)<a class="anchor" aria-l
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution11" aria-expanded="false" aria-controls="collapseSolution11">
   <h4 class="accordion-header" id="headingSolution11">Show me the solution</h4>
 </button>
-<div id="collapseSolution11" class="accordion-collapse collapse" data-bs-parent="#accordionSolution11" aria-labelledby="headingSolution11">
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 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb55">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2555,7 +2555,7 @@ <h3 class="callout-title">Case insensitive search in select files<a class="ancho
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution12" aria-expanded="false" aria-controls="collapseSolution12">
   <h4 class="accordion-header" id="headingSolution12">Show me the solution</h4>
 </button>
-<div id="collapseSolution12" class="accordion-collapse collapse" data-bs-parent="#accordionSolution12" aria-labelledby="headingSolution12">
+<div id="collapseSolution12" class="accordion-collapse collapse" aria-labelledby="headingSolution12" data-bs-parent="#accordionSolution12">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb56">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2586,7 +2586,7 @@ <h3 class="callout-title">Case insensitive search in select files (whole
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution13" aria-expanded="false" aria-controls="collapseSolution13">
   <h4 class="accordion-header" id="headingSolution13">Show me the solution</h4>
 </button>
-<div id="collapseSolution13" class="accordion-collapse collapse" data-bs-parent="#accordionSolution13" aria-labelledby="headingSolution13">
+<div id="collapseSolution13" class="accordion-collapse collapse" aria-labelledby="headingSolution13" data-bs-parent="#accordionSolution13">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb57">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2619,7 +2619,7 @@ <h3 class="callout-title">Searching with regular expressions<a class="anchor" ar
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution14" aria-expanded="false" aria-controls="collapseSolution14">
   <h4 class="accordion-header" id="headingSolution14">Show me the solution</h4>
 </button>
-<div id="collapseSolution14" class="accordion-collapse collapse" data-bs-parent="#accordionSolution14" aria-labelledby="headingSolution14">
+<div id="collapseSolution14" class="accordion-collapse collapse" aria-labelledby="headingSolution14" data-bs-parent="#accordionSolution14">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb58">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2666,7 +2666,7 @@ <h3 class="callout-title">Finding unique values<a class="anchor" aria-label="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution15" aria-expanded="false" aria-controls="collapseSolution15">
   <h4 class="accordion-header" id="headingSolution15">Show me the solution</h4>
 </button>
-<div id="collapseSolution15" class="accordion-collapse collapse" data-bs-parent="#accordionSolution15" aria-labelledby="headingSolution15">
+<div id="collapseSolution15" class="accordion-collapse collapse" aria-labelledby="headingSolution15" data-bs-parent="#accordionSolution15">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb60">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2766,7 +2766,7 @@ <h3 class="callout-title">Why are the variables double-quoted here?<a class="anc
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution16" aria-expanded="false" aria-controls="collapseSolution16">
   <h4 class="accordion-header" id="headingSolution16">Solutions</h4>
 </button>
-<div id="collapseSolution16" class="accordion-collapse collapse" data-bs-parent="#accordionSolution16" aria-labelledby="headingSolution16">
+<div id="collapseSolution16" class="accordion-collapse collapse" aria-labelledby="headingSolution16" data-bs-parent="#accordionSolution16">
 <div class="accordion-body">
 <ol style="list-style-type: lower-alpha">
 <li><p>Because we are explicitly listing the names after
@@ -2850,7 +2850,7 @@ <h3 id="now-your-turn">Now your turn<a class="anchor" aria-label="anchor" href="
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-<div id="collapseSolution17" class="accordion-collapse collapse" data-bs-parent="#accordionSolution17" aria-labelledby="headingSolution17">
+<div id="collapseSolution17" class="accordion-collapse collapse" aria-labelledby="headingSolution17" data-bs-parent="#accordionSolution17">
 <div class="accordion-body">
 <p>First, let’s see where our desired columns are:</p>
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@@ -3128,7 +3128,7 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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 <div class="codewrapper sourceCode" id="cb10">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3504,8 +3504,8 @@ <h3 class="callout-title">Key Points<a class="anchor" aria-label="anchor" href="
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   "dateCreated": "2018-04-12",
-  "dateModified": "2024-01-02",
-  "datePublished": "2024-01-02"
+  "dateModified": "2024-01-09",
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index b8bd8d85..d97b40e5 100644
--- a/instructor/contribute.html
+++ b/instructor/contribute.html
@@ -333,7 +333,7 @@ <h1>Contribute</h1>
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/contribute.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-08-29",
-  "datePublished": "2024-01-02"
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 }
 
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diff --git a/instructor/discuss.html b/instructor/discuss.html
index b9d8c839..57aa44f9 100644
--- a/instructor/discuss.html
+++ b/instructor/discuss.html
@@ -330,7 +330,7 @@ <h1>Discussion</h1>
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   "dateCreated": "2018-04-12",
   "dateModified": "2023-08-29",
-  "datePublished": "2024-01-02"
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diff --git a/instructor/images.html b/instructor/images.html
index 1d0fcd87..0d72e5ed 100644
--- a/instructor/images.html
+++ b/instructor/images.html
@@ -361,8 +361,8 @@ <h3 id="05-counting-mining-figure-1">Figure 1</h3>
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   "dateCreated": "2018-04-12",
-  "dateModified": "2024-01-02",
-  "datePublished": "2024-01-02"
+  "dateModified": "2024-01-09",
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 }
 
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diff --git a/instructor/index.html b/instructor/index.html
index 968c4bf8..db08ef35 100644
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+++ b/instructor/index.html
@@ -489,8 +489,8 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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   "dateCreated": "2018-04-12",
-  "dateModified": "2024-01-02",
-  "datePublished": "2024-01-02"
+  "dateModified": "2024-01-09",
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 }
 
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diff --git a/instructor/instructor-notes.html b/instructor/instructor-notes.html
index 5947ca06..3755413f 100644
--- a/instructor/instructor-notes.html
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@@ -670,8 +670,8 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
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   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/instructor-notes.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-01-02",
-  "datePublished": "2024-01-02"
+  "dateModified": "2024-01-09",
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 }
 
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diff --git a/instructor/key-points.html b/instructor/key-points.html
index 32388c9d..fb720e3f 100644
--- a/instructor/key-points.html
+++ b/instructor/key-points.html
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   "dateCreated": "2018-04-12",
-  "dateModified": "2024-01-02",
-  "datePublished": "2024-01-02"
+  "dateModified": "2024-01-09",
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 }
 
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diff --git a/instructor/profiles.html b/instructor/profiles.html
index 81e4ed4b..5f4d8d8d 100644
--- a/instructor/profiles.html
+++ b/instructor/profiles.html
@@ -279,8 +279,8 @@ <h1>Learner Profiles</h1>
   "url": "https://librarycarpentry.github.io/lc-shell/instructor/profiles.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/profiles.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-01-02",
-  "datePublished": "2024-01-02"
+  "dateModified": "2024-01-09",
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 }
 
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diff --git a/instructor/reference.html b/instructor/reference.html
index 63cd19d4..bf555d8e 100644
--- a/instructor/reference.html
+++ b/instructor/reference.html
@@ -445,7 +445,7 @@ <h3 id="shell-working-with-free-text">Shell: Working with Free Text<a class="anc
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/reference.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-09-08",
-  "datePublished": "2024-01-02"
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 }
 
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diff --git a/key-points.html b/key-points.html
index 42e4aaad..a28cd9f9 100644
--- a/key-points.html
+++ b/key-points.html
@@ -380,8 +380,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
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   "dateCreated": "2018-04-12",
-  "dateModified": "2024-01-02",
-  "datePublished": "2024-01-02"
+  "dateModified": "2024-01-09",
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 }
 
   </script><script>
diff --git a/pkgdown.yml b/pkgdown.yml
index 1c481d1a..d18a3345 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -2,5 +2,5 @@ pandoc: 2.19.2
 pkgdown: 2.0.7
 pkgdown_sha: ~
 articles: {}
-last_built: 2024-01-02T00:06Z
+last_built: 2024-01-09T00:07Z
 
diff --git a/profiles.html b/profiles.html
index 4216a379..8e9b9ac6 100644
--- a/profiles.html
+++ b/profiles.html
@@ -279,8 +279,8 @@ <h1>Learner Profiles</h1>
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   "identifier": "https://librarycarpentry.github.io/lc-shell/profiles.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-01-02",
-  "datePublished": "2024-01-02"
+  "dateModified": "2024-01-09",
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 }
 
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diff --git a/reference.html b/reference.html
index 77f7aae4..17b126de 100644
--- a/reference.html
+++ b/reference.html
@@ -443,7 +443,7 @@ <h3 id="shell-working-with-free-text">Shell: Working with Free Text<a class="anc
   "identifier": "https://librarycarpentry.github.io/lc-shell/reference.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-09-08",
-  "datePublished": "2024-01-02"
+  "datePublished": "2024-01-09"
 }
 
   </script><script>