diff --git a/01-intro-shell.html b/01-intro-shell.html
index 53976f2c..34d35e49 100644
--- a/01-intro-shell.html
+++ b/01-intro-shell.html
@@ -482,7 +482,7 @@ <h3 class="callout-title">Key Points</h3>
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   "dateCreated": "2018-04-12",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-09-17"
+  "datePublished": "2024-09-24"
 }
 
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diff --git a/02-navigating-the-filesystem.html b/02-navigating-the-filesystem.html
index d7324ff1..ab28928b 100644
--- a/02-navigating-the-filesystem.html
+++ b/02-navigating-the-filesystem.html
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   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">
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 <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>
@@ -638,7 +638,7 @@ <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>
@@ -730,7 +730,7 @@ <h3 class="callout-title">Key Points</h3>
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   "dateCreated": "2018-04-12",
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-  "datePublished": "2024-09-17"
+  "datePublished": "2024-09-24"
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diff --git a/03-working-with-files-and-folders.html b/03-working-with-files-and-folders.html
index d93c97c2..c6a4f37c 100644
--- a/03-working-with-files-and-folders.html
+++ b/03-working-with-files-and-folders.html
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   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">
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   Answer
   </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <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>
@@ -717,7 +717,7 @@ <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>
@@ -757,7 +757,7 @@ <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>
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   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
@@ -926,7 +926,7 @@ <h3 class="callout-title">Key Points</h3>
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   "dateCreated": "2018-04-12",
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-  "datePublished": "2024-09-17"
+  "datePublished": "2024-09-24"
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diff --git a/04-loops.html b/04-loops.html
index cfee8c21..d59b3219 100644
--- a/04-loops.html
+++ b/04-loops.html
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 <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">
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@@ -631,7 +631,7 @@ <h3 class="callout-title">Key Points</h3>
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diff --git a/05-counting-mining.html b/05-counting-mining.html
index ee490f83..4a68148f 100644
--- a/05-counting-mining.html
+++ b/05-counting-mining.html
@@ -658,7 +658,7 @@ <h3 class="callout-title">Adding another pipe</h3>
 <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 outputs whatever it gets as input, so
 you get exactly the same output from</p>
@@ -713,7 +713,7 @@ <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
@@ -747,7 +747,7 @@ <h3 class="callout-title">Counting number of files</h3>
 <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>
@@ -776,7 +776,7 @@ <h3 class="callout-title">Writing to files</h3>
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   <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">
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   <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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@@ -842,7 +842,7 @@ <h3 class="callout-title">Counting the number of words</h3>
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   <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>
@@ -1056,7 +1056,7 @@ <h3 class="callout-title">Automatically adding a date prefix</h3>
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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
@@ -1130,7 +1130,7 @@ <h3 class="callout-title">Case sensitive search</h3>
 <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">
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 <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>
@@ -1159,7 +1159,7 @@ <h3 class="callout-title">Case sensitive search in select files</h3>
 <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>
@@ -1188,7 +1188,7 @@ <h3 class="callout-title">Count words (case sensitive)</h3>
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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="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>
@@ -1217,7 +1217,7 @@ <h3 class="callout-title">Count words (case insensitive)</h3>
 <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>
@@ -1246,7 +1246,7 @@ <h3 class="callout-title">Case insensitive search in select files</h3>
 <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>
@@ -1275,7 +1275,7 @@ <h3 class="callout-title">Case insensitive search in select files (whole word)</
 <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">
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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>
@@ -1307,7 +1307,7 @@ <h3 class="callout-title">Searching with regular expressions</h3>
 <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>
@@ -1353,7 +1353,7 @@ <h3 class="callout-title">Finding unique values</h3>
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 </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>
@@ -1447,7 +1447,7 @@ <h3 class="callout-title">Why are the variables double-quoted here?</h3>
 <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
 <code>in</code>, and those contain no white-space. However, for
@@ -1526,7 +1526,7 @@ <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">
@@ -1633,7 +1633,7 @@ <h3 class="callout-title">Key Points</h3>
   "identifier": "https://librarycarpentry.github.io/lc-shell/05-counting-mining.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2024-05-07",
-  "datePublished": "2024-09-17"
+  "datePublished": "2024-09-24"
 }
 
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diff --git a/06-free-text.html b/06-free-text.html
index a14ff0af..e16219f7 100644
--- a/06-free-text.html
+++ b/06-free-text.html
@@ -915,7 +915,7 @@ <h3 class="callout-title">Key Points</h3>
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   "dateCreated": "2018-04-12",
   "dateModified": "2024-06-05",
-  "datePublished": "2024-09-17"
+  "datePublished": "2024-09-24"
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diff --git a/404.html b/404.html
index 3a8b1d71..d56b21a6 100644
--- a/404.html
+++ b/404.html
@@ -364,8 +364,8 @@ <h1>Page not found</h1>
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   "identifier": "https://librarycarpentry.github.io/lc-shell/404.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-09-17",
-  "datePublished": "2024-09-17"
+  "dateModified": "2024-09-24",
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 }
 
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diff --git a/CODE_OF_CONDUCT.html b/CODE_OF_CONDUCT.html
index 90cd1db9..feae7db5 100644
--- a/CODE_OF_CONDUCT.html
+++ b/CODE_OF_CONDUCT.html
@@ -385,7 +385,7 @@ <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": "2024-09-17"
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/LICENSE.html b/LICENSE.html
index 26c1f105..6c962d1c 100644
--- a/LICENSE.html
+++ b/LICENSE.html
@@ -433,7 +433,7 @@ <h1>Licenses</h1>
   "identifier": "https://librarycarpentry.github.io/lc-shell/LICENSE.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-09-17"
+  "datePublished": "2024-09-24"
 }
 
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diff --git a/aio.html b/aio.html
index 229042b9..52862aa5 100644
--- a/aio.html
+++ b/aio.html
@@ -718,7 +718,7 @@ <h4 class="accordion-header" id="headingSolution1">
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-<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>
@@ -795,7 +795,7 @@ <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>
@@ -1171,7 +1171,7 @@ <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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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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@@ -1235,7 +1235,7 @@ <h4 class="accordion-header" id="headingSolution3">
   Answer
   </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="cb23">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1275,7 +1275,7 @@ <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
@@ -1351,7 +1351,7 @@ <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
@@ -1577,7 +1577,7 @@ <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="cb6">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1993,7 +1993,7 @@ <h3 class="callout-title">Adding another pipe</h3>
 <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 outputs whatever it gets as input, so
 you get exactly the same output from</p>
@@ -2048,7 +2048,7 @@ <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
@@ -2082,7 +2082,7 @@ <h3 class="callout-title">Counting number of files</h3>
 <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>
@@ -2111,7 +2111,7 @@ <h3 class="callout-title">Writing to files</h3>
 <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>
@@ -2145,7 +2145,7 @@ <h3 class="callout-title">Appending to a file</h3>
 <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>
@@ -2177,7 +2177,7 @@ <h3 class="callout-title">Counting the number of words</h3>
 <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>
@@ -2393,7 +2393,7 @@ <h3 class="callout-title">Automatically adding a date prefix</h3>
 <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
@@ -2467,7 +2467,7 @@ <h3 class="callout-title">Case sensitive search</h3>
 <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>
@@ -2496,7 +2496,7 @@ <h3 class="callout-title">Case sensitive search in select files</h3>
 <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>
@@ -2525,7 +2525,7 @@ <h3 class="callout-title">Count words (case sensitive)</h3>
 <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>
@@ -2554,7 +2554,7 @@ <h3 class="callout-title">Count words (case insensitive)</h3>
 <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>
@@ -2583,7 +2583,7 @@ <h3 class="callout-title">Case insensitive search in select files</h3>
 <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>
@@ -2612,7 +2612,7 @@ <h3 class="callout-title">Case insensitive search in select files (whole word)</
 <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>
@@ -2644,7 +2644,7 @@ <h3 class="callout-title">Searching with regular expressions</h3>
 <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>
@@ -2690,7 +2690,7 @@ <h3 class="callout-title">Finding unique values</h3>
 <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>
@@ -2789,7 +2789,7 @@ <h3 class="callout-title">Why are the variables double-quoted here?</h3>
 <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
@@ -2871,7 +2871,7 @@ <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">
@@ -3530,8 +3530,8 @@ <h3 class="callout-title">Key Points</h3>
   "url": "https://librarycarpentry.github.io/lc-shell/aio.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/aio.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-09-17",
-  "datePublished": "2024-09-17"
+  "dateModified": "2024-09-24",
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/contribute.html b/contribute.html
index 2dcbfe49..d4f46b2e 100644
--- a/contribute.html
+++ b/contribute.html
@@ -388,7 +388,7 @@ <h1>Contribute</h1>
   "identifier": "https://librarycarpentry.github.io/lc-shell/contribute.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-08-29",
-  "datePublished": "2024-09-17"
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/discuss.html b/discuss.html
index 64a40509..2fc5a526 100644
--- a/discuss.html
+++ b/discuss.html
@@ -385,7 +385,7 @@ <h1>Discussion</h1>
   "identifier": "https://librarycarpentry.github.io/lc-shell/discuss.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-08-29",
-  "datePublished": "2024-09-17"
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/images.html b/images.html
index bd3d9211..b04ab286 100644
--- a/images.html
+++ b/images.html
@@ -419,8 +419,8 @@ <h3 id="05-counting-mining-figure-1">Figure 1</h3>
   "url": "https://librarycarpentry.github.io/lc-shell/images.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/images.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-09-17",
-  "datePublished": "2024-09-17"
+  "dateModified": "2024-09-24",
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/index.html b/index.html
index a3acf452..8e34ebd7 100644
--- a/index.html
+++ b/index.html
@@ -471,8 +471,8 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
   "url": "https://librarycarpentry.github.io/lc-shell/index.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/index.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-09-17",
-  "datePublished": "2024-09-17"
+  "dateModified": "2024-09-24",
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/instructor-notes.html b/instructor-notes.html
index 40c93d4e..c191f4f7 100644
--- a/instructor-notes.html
+++ b/instructor-notes.html
@@ -721,8 +721,8 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
   "url": "https://librarycarpentry.github.io/lc-shell/instructor-notes.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor-notes.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-09-17",
-  "datePublished": "2024-09-17"
+  "dateModified": "2024-09-24",
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/instructor/01-intro-shell.html b/instructor/01-intro-shell.html
index 6ecf6eff..c6c87a1e 100644
--- a/instructor/01-intro-shell.html
+++ b/instructor/01-intro-shell.html
@@ -484,7 +484,7 @@ <h3 class="callout-title">Key Points</h3>
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/01-intro-shell.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-05-08",
-  "datePublished": "2024-09-17"
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/instructor/02-navigating-the-filesystem.html b/instructor/02-navigating-the-filesystem.html
index cd3461ce..3b6f9a0e 100644
--- a/instructor/02-navigating-the-filesystem.html
+++ b/instructor/02-navigating-the-filesystem.html
@@ -563,7 +563,7 @@ <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>
@@ -640,7 +640,7 @@ <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>
@@ -732,7 +732,7 @@ <h3 class="callout-title">Key Points</h3>
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/02-navigating-the-filesystem.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2024-05-02",
-  "datePublished": "2024-09-17"
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/instructor/03-working-with-files-and-folders.html b/instructor/03-working-with-files-and-folders.html
index b4b41831..440e9774 100644
--- a/instructor/03-working-with-files-and-folders.html
+++ b/instructor/03-working-with-files-and-folders.html
@@ -655,7 +655,7 @@ <h4 class="accordion-header" id="headingSolution1">
   Answer
   </h4>
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@@ -749,7 +749,7 @@ <h3 class="callout-title">Counting number of files</h3>
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   </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
@@ -1356,7 +1356,7 @@ <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
@@ -1583,7 +1583,7 @@ <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="cb6">
 <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2000,7 +2000,7 @@ <h3 class="callout-title">Adding another pipe</h3>
 <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 outputs whatever it gets as input, so
 you get exactly the same output from</p>
@@ -2055,7 +2055,7 @@ <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
@@ -2089,7 +2089,7 @@ <h3 class="callout-title">Counting number of files</h3>
 <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>
@@ -2118,7 +2118,7 @@ <h3 class="callout-title">Writing to files</h3>
 <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>
@@ -2152,7 +2152,7 @@ <h3 class="callout-title">Appending to a file</h3>
 <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>
@@ -2184,7 +2184,7 @@ <h3 class="callout-title">Counting the number of words</h3>
 <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>
@@ -2400,7 +2400,7 @@ <h3 class="callout-title">Automatically adding a date prefix</h3>
 <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
@@ -2474,7 +2474,7 @@ <h3 class="callout-title">Case sensitive search</h3>
 <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>
@@ -2503,7 +2503,7 @@ <h3 class="callout-title">Case sensitive search in select files</h3>
 <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>
@@ -2532,7 +2532,7 @@ <h3 class="callout-title">Count words (case sensitive)</h3>
 <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>
@@ -2561,7 +2561,7 @@ <h3 class="callout-title">Count words (case insensitive)</h3>
 <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>
@@ -2590,7 +2590,7 @@ <h3 class="callout-title">Case insensitive search in select files</h3>
 <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>
@@ -2619,7 +2619,7 @@ <h3 class="callout-title">Case insensitive search in select files (whole word)</
 <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>
@@ -2651,7 +2651,7 @@ <h3 class="callout-title">Searching with regular expressions</h3>
 <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>
@@ -2697,7 +2697,7 @@ <h3 class="callout-title">Finding unique values</h3>
 <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>
@@ -2796,7 +2796,7 @@ <h3 class="callout-title">Why are the variables double-quoted here?</h3>
 <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
@@ -2878,7 +2878,7 @@ <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">
@@ -3538,8 +3538,8 @@ <h3 class="callout-title">Key Points</h3>
   "url": "https://librarycarpentry.github.io/lc-shell/instructor/aio.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/aio.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-09-17",
-  "datePublished": "2024-09-17"
+  "dateModified": "2024-09-24",
+  "datePublished": "2024-09-24"
 }
 
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diff --git a/instructor/contribute.html b/instructor/contribute.html
index ab874780..5182b5f2 100644
--- a/instructor/contribute.html
+++ b/instructor/contribute.html
@@ -390,7 +390,7 @@ <h1>Contribute</h1>
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/contribute.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-08-29",
-  "datePublished": "2024-09-17"
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/instructor/discuss.html b/instructor/discuss.html
index 800e5c87..eb8d7001 100644
--- a/instructor/discuss.html
+++ b/instructor/discuss.html
@@ -387,7 +387,7 @@ <h1>Discussion</h1>
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/discuss.html",
   "dateCreated": "2018-04-12",
   "dateModified": "2023-08-29",
-  "datePublished": "2024-09-17"
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/instructor/images.html b/instructor/images.html
index 305c270e..869c4397 100644
--- a/instructor/images.html
+++ b/instructor/images.html
@@ -421,8 +421,8 @@ <h3 id="05-counting-mining-figure-1">Figure 1</h3>
   "url": "https://librarycarpentry.github.io/lc-shell/instructor/images.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/images.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-09-17",
-  "datePublished": "2024-09-17"
+  "dateModified": "2024-09-24",
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/instructor/index.html b/instructor/index.html
index d32b139d..a7f8d613 100644
--- a/instructor/index.html
+++ b/instructor/index.html
@@ -543,8 +543,8 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
   "url": "https://librarycarpentry.github.io/lc-shell/instructor/index.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/index.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-09-17",
-  "datePublished": "2024-09-17"
+  "dateModified": "2024-09-24",
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/instructor/instructor-notes.html b/instructor/instructor-notes.html
index 2e0615fa..d4d1c5cc 100644
--- a/instructor/instructor-notes.html
+++ b/instructor/instructor-notes.html
@@ -729,8 +729,8 @@ <h3 class="code-label">BASH<i aria-hidden="true" data-feather="chevron-left"></i
   "url": "https://librarycarpentry.github.io/lc-shell/instructor/instructor-notes.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/instructor-notes.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-09-17",
-  "datePublished": "2024-09-17"
+  "dateModified": "2024-09-24",
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/instructor/key-points.html b/instructor/key-points.html
index 023837b0..3e8aefa4 100644
--- a/instructor/key-points.html
+++ b/instructor/key-points.html
@@ -442,8 +442,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
   "url": "https://librarycarpentry.github.io/lc-shell/instructor/key-points.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/instructor/key-points.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-09-17",
-  "datePublished": "2024-09-17"
+  "dateModified": "2024-09-24",
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/instructor/profiles.html b/instructor/profiles.html
index f5966c2b..819391b5 100644
--- a/instructor/profiles.html
+++ b/instructor/profiles.html
@@ -336,8 +336,8 @@ <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": "2024-09-17",
-  "datePublished": "2024-09-17"
+  "dateModified": "2024-09-24",
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/instructor/reference.html b/instructor/reference.html
index d7e579a3..6c64bc00 100644
--- a/instructor/reference.html
+++ b/instructor/reference.html
@@ -501,7 +501,7 @@ <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": "2024-09-17"
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/key-points.html b/key-points.html
index 26ee54d2..d01413f0 100644
--- a/key-points.html
+++ b/key-points.html
@@ -440,8 +440,8 @@ <h2 class="accordion-header" id="flush-headingTwelve">
   "url": "https://librarycarpentry.github.io/lc-shell/key-points.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/key-points.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-09-17",
-  "datePublished": "2024-09-17"
+  "dateModified": "2024-09-24",
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/pkgdown.yml b/pkgdown.yml
index 421f9b77..bcf1db69 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -1,5 +1,5 @@
 pandoc: 3.1.11
-pkgdown: 2.1.0
+pkgdown: 2.1.1
 pkgdown_sha: ~
 articles: {}
-last_built: 2024-09-17T00:06Z
+last_built: 2024-09-24T00:08Z
diff --git a/profiles.html b/profiles.html
index 7a840ae3..21b73368 100644
--- a/profiles.html
+++ b/profiles.html
@@ -336,8 +336,8 @@ <h1>Learner Profiles</h1>
   "url": "https://librarycarpentry.github.io/lc-shell/profiles.html",
   "identifier": "https://librarycarpentry.github.io/lc-shell/profiles.html",
   "dateCreated": "2018-04-12",
-  "dateModified": "2024-09-17",
-  "datePublished": "2024-09-17"
+  "dateModified": "2024-09-24",
+  "datePublished": "2024-09-24"
 }
 
   </script><script>
diff --git a/reference.html b/reference.html
index ac297906..c2416b35 100644
--- a/reference.html
+++ b/reference.html
@@ -499,7 +499,7 @@ <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": "2024-09-17"
+  "datePublished": "2024-09-24"
 }
 
   </script><script>