diff --git a/README.adoc b/README.adoc
new file mode 100644
index 00000000..6d2ff9a1
--- /dev/null
+++ b/README.adoc
@@ -0,0 +1,71 @@
+= Community contributed blocklets
+
+This repository contains a set of scripts (a.k.a. *blocklets*) for link:https://github.com/vivien/i3blocks[i3blocks], contributed by the community.
+
+|===
+| Blocklet | Description
+| link:afs[] | Show usage information for an AFS directory
+| link:apt-upgrades[] | Show system upgrades using aptitude
+| link:arch-update[] | Show AUR updates using yaourt
+| link:aur-update[] | Show AUR updates
+| link:bandwidth[] | Show bandwidth information (default bash version)
+| link:bandwidth2[] | Show bandwidth information (C version)
+| link:bandwidth3[] | Show bandwidth information (another bash version)
+| link:battery[] | Show battery info
+| link:battery2[] | Pretty battery info
+| link:batterybar[] | Show battery info graphically as a bar
+| link:calendar[] | Current date/time and click for calendar
+| link:cpu_usage[] | Show current CPU usage
+| link:disk[] | Show disk usage (space used) for a given directory
+| link:disk-io[] | Monitor disk reads and writes
+| link:docker[] | Show the number of Docker containers and container IP
+| link:email[] | Show the number of unread IMAP messages
+| link:essid[] | Show the wifi ESSID you are connected to
+| link:gpu-load[] | Shows load of Nvidia GPUs
+| link:iface[] | Show network interface IP/status
+| link:kbdd_layout[] | Show the keyboard layout using dbus and kbdd
+| link:keyindicator[] | Show the status of capslock or numlock
+| link:key_layout[] | Show the current keyboard layout using setxkbmap
+| link:kubernetes[] | Show the kubernetes current context and namespace
+| link:load_average[] | Show the system 1 minute load average
+| link:mediaplayer[] | Generic media player status/controls using playerctl
+| link:memory[] | Show ram or swap usage
+| link:monitor_manager[] | Manage monitor on/off, resolution, extend, clone
+| link:openvpn[] | Show openvpn status
+| link:rofi-calendar[] | Current date/time and click for callendar using rofi
+| link:shutdown_menu[] | Shutdown menu using rofi or zenity
+| link:tahoe-lafs[] | Show status of your tahoe-lafs grid
+| link:temperature[] | Show system temperatures using lm-sensors
+| link:time[] | Show the current date/time and click to change timezones
+| link:usb[] | Show connected usb storage device info
+| link:volume[] | Show the current system volume (default)
+| link:volume-pulseaudio[] | Pretty print system volume for pulseaudio
+| link:wifi[] | Show the strength of your wifi connection in percent
+| link:wlan-dbm[] | Show wifi interface link quality in dBm or percent
+| link:ytdl-mpv[] | Play youtube videos from your clipboard using youtube-dl
+|===
+
+It is officially maintained by @kb100 with the help of a bench of active i3blocks crafters.
+
+Each release of this repository will be guaranteed to work against a given link:https://github.com/vivien/i3blocks/releases[release] of i3blocks (a.k.a. *core*).
+
+|===
+| contrib | core
+| master | master
+| next | next
+|===
+
+You may want to take a look at the individual blocklet directories, which contain descriptions, screenshots, and installation/configuration instructions.
+
+NOTE: configurations reference `$SCRIPT_DIR`, meaning the directory that you put the script into. +
+You must change `$SCRIPT_DIR` appropriately to coincide with where you put your scripts, for more info see the link:https://github.com/vivien/i3blocks-contrib/wiki/FAQ#blocklets-refer-to-script_dir-what-does-that-mean-how-can-i-use-it[FAQ].
+
+Want to contribute?
+Great!
+Check the link:https://github.com/vivien/i3blocks-contrib/blob/master/CONTRIBUTING.md[contribution guidelines] in order to get started.
+
+NOTE: i3blocks now supports dynamics properties, and all scripts have been updated to do the same. +
+i3blocks-contrib REQUIRES a version of i3blocks that supports dynamics properties, which is currently only +
+available in the git version since the last release (v1.4) was years ago.
+
+Happy crafting!
diff --git a/README.md b/README.md
deleted file mode 100644
index 7e9dc2f3..00000000
--- a/README.md
+++ /dev/null
@@ -1,31 +0,0 @@
-# Community contributed blocklets
-
-This repository contains a set of scripts (a.k.a. *blocklets*) for 
-[i3blocks](https://github.com/vivien/i3blocks), contributed by the 
-community.
-
-It is officially maintained by @kb100 with the help of 
-a bench of active i3blocks crafters.
-
-Each release of this repository will be guaranteed to work against 
-a given [release](https://github.com/vivien/i3blocks/releases) of 
-i3blocks (a.k.a. *core*).
-
-contrib | core
-------- | ----
-master  | master
-
-You may want to take a look at the individual blocklet directories,
-which contain descriptions, screenshots, and installation/configuration 
-instructions.
-Note: configurations reference `$SCRIPT_DIR`, meaning the directory that you put
-the script into. 
-You must change `$SCRIPT_DIR` appropriately to coincide with where you put
-your scripts, for more info see the [FAQ](https://github.com/vivien/i3blocks-contrib/wiki/FAQ#blocklets-refer-to-script_dir-what-does-that-mean-how-can-i-use-it).
-
-Want to contribute?
-Great!
-Check the [contribution guidelines](https://github.com/vivien/i3blocks-contrib/blob/master/CONTRIBUTING.md)
-in order to get started.
-
-Happy crafting!
diff --git a/afs/README.md b/afs/README.md
index bbe9c4f2..86a60653 100644
--- a/afs/README.md
+++ b/afs/README.md
@@ -10,11 +10,11 @@ Suggested i3blocks configuration:
 
 ```
 [afs]
-command=$SCRIPT_DIR/afs -c 90
-label=AFS
+command=$SCRIPT_DIR/afs
 instance=~/afs/
 markup=pango
 interval=600
+LABEL=AFS 
 #CRITICAL=90
 #CRIT_FG_COLOR=#FF0000
 #CRIT_BG_COLOR=
diff --git a/afs/afs b/afs/afs
index 8353a43d..8d619679 100755
--- a/afs/afs
+++ b/afs/afs
@@ -40,10 +40,8 @@ parser.add_argument('-bg', '--bg-color', type=str, default=_default('CRIT_BG_COL
 args = parser.parse_args()
 
 # set the afs directory to be checked
-if 'BLOCK_INSTANCE' in os.environ:
-    directory = os.environ['BLOCK_INSTANCE']
-else:
-    directory = '~/afs/'  # some default
+directory = os.environ.get('BLOCK_INSTANCE', '~/afs/')
+label = os.environ.get('LABEL', '')
 
 # expand environment variables etc.
 directory = os.path.expandvars(directory)
@@ -57,7 +55,7 @@ fs_output = fs_output.split('\n')[1]
 quota, used, percentage = fs_output.split()[1:4]
 percentage = int(percentage.split('%')[0])
 
-output = '%s/%s (%i%%)' % (used, quota, percentage)
+output = '%s%s/%s (%i%%)' % (label, used, quota, percentage)
 
 if percentage >= args.critical:
     if args.bg_color:
diff --git a/arch-update/README.md b/arch-update/README.md
index 6657f156..34232af5 100644
--- a/arch-update/README.md
+++ b/arch-update/README.md
@@ -26,14 +26,13 @@ Be always on top of your available updates with this blocklet. Optionally show A
 ```ini
 [arch-update]
 command=$SCRIPT_DIR/arch-update 
-label=Updates:
 interval=3600
 markup=pango
+LABEL=Updates: 
 ```
 Another advanced example with fontawesome label, AUR updates included, watched packages, and custom colors for both messages:
 ```ini
 [pacman-updates]
-label=
 command=$SCRIPT_DIR/arch-update
 markup=pango
 interval= 3600
@@ -42,6 +41,7 @@ WATCH=^linux.* ^pacman.*
 BASE_COLOR=#5fff5f
 UPDATE_COLOR=#FFFF85
 AUR=true
+LABEL= 
 ```
 # Configuration
 _Use the environment variables above instead of these deprecated command line options:_
diff --git a/arch-update/arch-update b/arch-update/arch-update
index 9dfec462..59044ede 100755
--- a/arch-update/arch-update
+++ b/arch-update/arch-update
@@ -102,7 +102,8 @@ def matching_updates(updates, watch_list):
     return matches
 
 
-message = "<span color='{0}'>{1}</span>"
+label = os.environ.get("LABEL","")
+message = "{0}<span color='{1}'>{2}</span>"
 args = create_argparse()
 
 updates = get_updates()
@@ -117,7 +118,7 @@ if update_count > 0:
     if matches:
         info += ' [{0}]'.format(', '.join(matches))
         short_info += '*'
-    print(message.format(args.updates_available_color, info))
-    print(message.format(args.updates_available_color, short_info))
+    print(message.format(label, args.updates_available_color, info))
+    print(message.format(label, args.updates_available_color, short_info))
 elif not args.quiet:
-    print(message.format(args.base_color, 'system up to date'))
+    print(message.format(label, args.base_color, 'system up to date'))
diff --git a/bandwidth/README.md b/bandwidth/README.md
index fbd271af..8b01bd39 100644
--- a/bandwidth/README.md
+++ b/bandwidth/README.md
@@ -1,6 +1,8 @@
 # bandwidth
 
-Show bandwidth information
+Show bandwidth information. Some interfaces report unknown instead of up for
+their state. If you would like to treat unknowns as up, then set 
+`TREAT_UNKNOWN_AS_UP=1`.
 
 ![](bandwidth.png)
 
@@ -13,4 +15,5 @@ interval=5
 #INTERFACE=eth0
 #INLABEL="IN "
 #OUTLABEL="OUT "
+#TREAT_UNKNOWN_AS_UP=0
 ```
diff --git a/bandwidth/bandwidth b/bandwidth/bandwidth
index 1259366b..a41efb21 100755
--- a/bandwidth/bandwidth
+++ b/bandwidth/bandwidth
@@ -40,8 +40,13 @@ elif [[ -z $INTERFACE ]]; then
   INTERFACE=$(ip route | awk '/^default/ { print $5 ; exit }')
 fi
 
+# Exit if there is no default route
+[[ -z "$INTERFACE" ]] && exit
+
 # Issue #36 compliant.
-if ! [ -e "/sys/class/net/${INTERFACE}/operstate" ] || ! [ "`cat /sys/class/net/${INTERFACE}/operstate`" = "up" ]
+if ! [ -e "/sys/class/net/${INTERFACE}/operstate" ] || \
+    (! [ "$TREAT_UNKNOWN_AS_UP" = "1" ] && 
+    ! [ "`cat /sys/class/net/${INTERFACE}/operstate`" = "up" ])
 then
     echo "$INTERFACE down"
     echo "$INTERFACE down"
diff --git a/bandwidth2/README.md b/bandwidth2/README.md
index e8e11528..5dc60cf4 100644
--- a/bandwidth2/README.md
+++ b/bandwidth2/README.md
@@ -19,10 +19,10 @@ make
 ### Config
 ```ini
 [bandwidth]
-label=
 command=$SCRIPT_DIR/bandwidth2 
 interval=persist
 markup=pango
+LABEL=
 #INTERFACE=(checks all interfaces)
 #USE_BITS=0
 #USE_BYES=1
@@ -36,10 +36,10 @@ E.g.
 
 ```ini
 [bandwidth]
-label=
 command=$SCRIPT_DIR/bandwidth2 
 interval=persist
 markup=pango
+LABEL=
 WARN_RX=307200
 WARN_TX=30720
 CRIT_RX=512000
diff --git a/bandwidth2/bandwidth2.c b/bandwidth2/bandwidth2.c
index 76ac4ef9..894fe488 100644
--- a/bandwidth2/bandwidth2.c
+++ b/bandwidth2/bandwidth2.c
@@ -1,3 +1,4 @@
+#define _DEFAULT_SOURCE
 #include <stdio.h>
 #include <stdlib.h>
 #include <time.h>
@@ -24,14 +25,15 @@ void usage(char *argv[])
   printf("-b \t\tuse bits/s\n");
   printf("-B \t\tuse Bytes/s  (default)\n");
   printf("-t seconds\trefresh time (default is 1)\n");
-  printf("-i interface\tnetwork interface to monitor. If not specified, check all interfaces.\n");
+  printf("-i interfaces\tnetwork interfaces to monitor (comma separated).\n");
+  printf("             \tIf not specified, check all interfaces.\n");
   printf("-w Bytes:Bytes\tSet warning (color orange) for Rx:Tx bandwidth. (default: none)\n");
   printf("-c Bytes:Bytes\tSet critical (color red) for Rx:Tx bandwidth. (default: none)\n");
   printf("-h \t\tthis help\n");
   printf("\n");
 }
 
-void get_values(char *const iface, time_t * const s, ulli * const received, ulli * const sent)
+void get_values(char **const ifaces, int num_ifaces, time_t * const s, ulli * const received, ulli * const sent)
 {
   FILE *f;
 
@@ -42,18 +44,23 @@ void get_values(char *const iface, time_t * const s, ulli * const received, ulli
   }
 
   ulli temp_r, temp_s;
-  char line[BUFSIZ];
+  char line[BUFSIZ] = {0};
   char ifname[BUFSIZ];
 
   *received = 0;
   *sent = 0;
   while (fgets(line, BUFSIZ - 1, f) != NULL) {
-    if (sscanf(line, "%s %llu %*u %*u %*u %*u %*u %*u %*u %llu", ifname, &temp_r, &temp_s) == 3) {
-      if (iface && strcmp(iface, ifname) != 0) {
-        continue;
+    if (sscanf(line, "%[^:]: %llu %*u %*u %*u %*u %*u %*u %*u %llu", ifname, &temp_r, &temp_s) == 3) {
+      int i;
+      int iface_found = num_ifaces == 0;
+      for (i = 0; i < num_ifaces; i++) {
+        if (strcmp(ifaces[i], ifname) != 0) {
+          iface_found = 1;
+          break;
+        }
       }
 
-      if (strcmp(ifname, "lo:") == 0)
+      if (!iface_found || strcmp(ifname, "lo") == 0)
         continue;
 
       *received = *received + temp_r;
@@ -95,12 +102,28 @@ void display(int const unit, double b, int const warning, int const critical)
   printf("</span>");
 }
 
+void parse_ifaces(char *str, char ***ifaces, int *num_ifaces)
+{
+  int max_ifaces = strlen(str) / 2 + 1;
+
+  *ifaces = calloc(max_ifaces, sizeof (char *));
+  *num_ifaces = 0;
+  while (((*ifaces)[*num_ifaces] = strsep(&str, ","))) {
+    if ((*ifaces)[*num_ifaces] != NULL && (*ifaces)[*num_ifaces][0] != '\0') {
+      (*num_ifaces)++;
+    }
+  }
+}
+
 int main(int argc, char *argv[])
 {
   int c, unit = 'B', t = 1;
-  char iface[BUFSIZ] = {0};
+  char str_ifaces[BUFSIZ] = {0};
+  char **ifaces;
+  int num_ifaces;
   int warningrx = 0, warningtx = 0, criticalrx = 0, criticaltx = 0;
   char *envvar = NULL;
+  char *label = "";
 
   envvar = getenv("USE_BITS");
   if (envvar && *envvar == '1')
@@ -113,7 +136,10 @@ int main(int argc, char *argv[])
     t = atoi(envvar);
   envvar = getenv("INTERFACE");
   if (envvar)
-    snprintf(iface, BUFSIZ, "%s:", envvar);
+    snprintf(str_ifaces, BUFSIZ, "%s", envvar);
+  envvar = getenv("INTERFACES");
+  if (envvar)
+    snprintf(str_ifaces, BUFSIZ, "%s", envvar);
   envvar = getenv("WARN_RX");
   if (envvar)
       warningrx = atoi(envvar);
@@ -126,6 +152,9 @@ int main(int argc, char *argv[])
   envvar = getenv("CRIT_TX");
   if (envvar)
       criticaltx = atoi(envvar);
+  envvar = getenv("LABEL");
+  if (envvar)
+      label = envvar;
 
   while (c = getopt(argc, argv, "bBht:i:w:c:"), c != -1) {
     switch (c) {
@@ -137,7 +166,7 @@ int main(int argc, char *argv[])
       t = atoi(optarg);
       break;
     case 'i':
-      snprintf(iface, BUFSIZ, "%s:", optarg);
+      snprintf(str_ifaces, BUFSIZ, "%s", optarg);
       break;
     case 'w':
       sscanf(optarg, "%d:%d", &warningrx, &warningtx);
@@ -151,26 +180,31 @@ int main(int argc, char *argv[])
     }
   }
 
+  parse_ifaces(str_ifaces, &ifaces, &num_ifaces);
+
   time_t s, s_old;
   ulli received, sent, received_old, sent_old;
   double rx, tx;
 
-  get_values(iface, &s_old, &received_old, &sent_old);
+  get_values(ifaces, num_ifaces, &s_old, &received_old, &sent_old);
 
   while (1) {
     sleep(t);
-    get_values(iface[0] ? iface : NULL, &s, &received, &sent);
+    get_values(ifaces, num_ifaces, &s, &received, &sent);
 
     rx = (received - received_old) / (float)(s - s_old);
     tx = (sent - sent_old) / (float)(s - s_old);
+    printf("%s", label);
     display(unit, rx, warningrx, criticalrx);
     printf(" ");
     display(unit, tx, warningtx, criticaltx);
+    printf("\n");
     fflush(stdout);
     s_old = s;
     received_old = received;
     sent_old = sent;
   }
 
+  free(ifaces);
   return STATE_OK;
 }
diff --git a/bandwidth3/README.md b/bandwidth3/README.md
index 4fd8aef6..32d600bb 100644
--- a/bandwidth3/README.md
+++ b/bandwidth3/README.md
@@ -11,11 +11,12 @@ Monitor bandwidth usage.
 command=$SCRIPT_DIR/bandwidth3
 interval=persist
 markup=pango
+#LABEL=<span font='FontAwesome'>  </span>
 #IFACE=[automatically determined]
 #DT=3
 #UNIT=Mb
 # Exposed variables: rx, wx, tx, unit, iface
-#PRINTF_COMMAND=printf "<span font='FontAwesome'>  </span>%-5.1f/%5.1f %s/s\n", rx, wx, unit;
+#PRINTF_COMMAND=printf "${LABEL}%-5.1f/%5.1f %s/s\n", rx, wx, unit;
 ```
 
 Note that the interface will be guessed using `ip route` but it can also be specified 
diff --git a/bandwidth3/bandwidth3 b/bandwidth3/bandwidth3
index 6f74067c..53868a55 100755
--- a/bandwidth3/bandwidth3
+++ b/bandwidth3/bandwidth3
@@ -9,8 +9,8 @@ iface="${BLOCK_INSTANCE}"
 iface="${IFACE:-$iface}"
 dt="${DT:-3}"
 unit="${UNIT:-Mb}"
-label="<span font='FontAwesome'>  </span>" # down arrow up arrow
-printf_command="${PRINTF_COMMAND:-"printf \"${label}%-5.1f/%5.1f %s/s\\n\", rx, wx, unit;"}"
+LABEL="${LABEL:-<span font='FontAwesome'>  </span>}" # down arrow up arrow
+printf_command="${PRINTF_COMMAND:-"printf \"${LABEL}%-5.1f/%5.1f %s/s\\n\", rx, wx, unit;"}"
 
 function default_interface {
     ip route | awk '/^default via/ {print $5; exit}'
diff --git a/bandwidth3/i3blocks.conf b/bandwidth3/i3blocks.conf
index 407bbec4..b2930c3a 100644
--- a/bandwidth3/i3blocks.conf
+++ b/bandwidth3/i3blocks.conf
@@ -2,8 +2,9 @@
 command=$SCRIPT_DIR/bandwidth3
 interval=persist
 markup=pango
+#LABEL=<span font='FontAwesome'>  </span>
 #IFACE=[automatically determined]
 #DT=3
 #UNIT=Mb
 # Exposed variables: rx, wx, tx, unit, iface
-#PRINTF_COMMAND=printf "<span font='FontAwesome'>  </span>%-5.1f/%5.1f %s/s\n", rx, wx, unit;
+#PRINTF_COMMAND=printf "${LABEL}%-5.1f/%5.1f %s/s\n", rx, wx, unit;
diff --git a/battery/README.md b/battery/README.md
index 939e60b0..5f14bdb7 100644
--- a/battery/README.md
+++ b/battery/README.md
@@ -13,8 +13,8 @@ Show battery info.
 ```
 [battery]
 command=$SCRIPT_DIR/battery
-label=BAT
-#label=⚡
 interval=30
+LABEL=BAT
+#LABEL=⚡
 #BAT_NUMBER=0
 ```
diff --git a/battery/battery b/battery/battery
index b09166d0..b5f0a576 100755
--- a/battery/battery
+++ b/battery/battery
@@ -23,20 +23,25 @@ my $ac_adapt;
 my $full_text;
 my $short_text;
 my $bat_number = $ENV{BAT_NUMBER} || 0;
+my $label = $ENV{LABEL} || "";
 
 # read the first line of the "acpi" command output
-open (ACPI, "acpi -b | grep 'Battery $bat_number' |") or die;
+open (ACPI, "acpi -b 2>/dev/null| grep 'Battery $bat_number' |") or die;
 $acpi = <ACPI>;
 close(ACPI);
 
 # fail on unexpected output
-if ($acpi !~ /: (\w+), (\d+)%/) {
+if (not defined($acpi)) {
+    # don't print anything to stderr if there is no battery
+    exit(0);
+}
+elsif ($acpi !~ /: ([\w\s]+), (\d+)%/) {
 	die "$acpi\n";
 }
 
 $status = $1;
 $percent = $2;
-$full_text = "$percent%";
+$full_text = "$label$percent%";
 
 if ($status eq 'Discharging') {
 	$full_text .= ' DIS';
diff --git a/battery/i3blocks.conf b/battery/i3blocks.conf
index d42ea0a4..18b39683 100644
--- a/battery/i3blocks.conf
+++ b/battery/i3blocks.conf
@@ -1,6 +1,6 @@
 [battery]
 command=$SCRIPT_DIR/battery
-label=BAT
-#label=⚡
 interval=30
+LABEL=BAT
+#LABEL=⚡
 #BAT_NUMBER=0
diff --git a/calendar/README.md b/calendar/README.md
index 84770889..bf29b5b9 100644
--- a/calendar/README.md
+++ b/calendar/README.md
@@ -22,8 +22,8 @@ This is similar to the rofi-calendar blocklet, but without the rofi dependency a
 ```ini
 [calendar]
 command=$SCRIPT_DIR/calendar
-label=
 interval=1
+LABEL= 
 DATEFMT=+%H:%M:%S
 # SHORTFMT=+%H:%M:%S
 HEIGHT=180
diff --git a/calendar/calendar b/calendar/calendar
index d66bcfd0..4ec7d813 100755
--- a/calendar/calendar
+++ b/calendar/calendar
@@ -36,5 +36,5 @@ case "$BLOCK_BUTTON" in
 	    --posx=$posX --posy=$posY \
 	    > /dev/null"
 esac
-date "$DATEFMT"
-date "$SHORTFMT"
+echo "$LABEL$(date "$DATEFMT")"
+echo "$LABEL$(date "$SHORTFMT")"
diff --git a/config.example b/config.example
index 5bc6e64b..bf04f603 100644
--- a/config.example
+++ b/config.example
@@ -36,7 +36,6 @@ markup=none
 # See the script for details.
 
 [volume]
-command=$SCRIPT_DIR/volume
 #label=♪
 label=VOL
 interval=once
diff --git a/cpu_usage/README.md b/cpu_usage/README.md
index f5b63230..f6d8045e 100644
--- a/cpu_usage/README.md
+++ b/cpu_usage/README.md
@@ -13,8 +13,8 @@ Show CPU usage.
 ```
 [cpu_usage]
 command=$SCRIPT_DIR/cpu_usage
-label=CPU
 interval=10
+LABEL=CPU 
 #min_width=CPU: 100.00%
 #T_WARN=50
 #T_CRIT=80
diff --git a/cpu_usage/cpu_usage b/cpu_usage/cpu_usage
index 648b4ae9..44c1189d 100755
--- a/cpu_usage/cpu_usage
+++ b/cpu_usage/cpu_usage
@@ -12,10 +12,11 @@ use utf8;
 use Getopt::Long;
 
 # default values
-my $t_warn = $ENV{T_WARN} || 50;
-my $t_crit = $ENV{T_CRIT} || 80;
+my $t_warn = $ENV{T_WARN} // 50;
+my $t_crit = $ENV{T_CRIT} // 80;
 my $cpu_usage = -1;
-my $decimals = $ENV{DECIMALS} || 2;
+my $decimals = $ENV{DECIMALS} // 2;
+my $label = $ENV{LABEL} // "";
 
 sub help {
     print "Usage: cpu_usage [-w <warning>] [-c <critical>] [-d <decimals>]\n";
@@ -45,7 +46,9 @@ close(MPSTAT);
 $cpu_usage eq -1 and die 'Can\'t find CPU information';
 
 # Print short_text, full_text
+print "${label}";
 printf "%.${decimals}f%%\n", $cpu_usage;
+print "${label}";
 printf "%.${decimals}f%%\n", $cpu_usage;
 
 # Print color, if needed
diff --git a/cpu_usage/i3blocks.conf b/cpu_usage/i3blocks.conf
index 239fa0dd..413c38da 100644
--- a/cpu_usage/i3blocks.conf
+++ b/cpu_usage/i3blocks.conf
@@ -1,7 +1,7 @@
 [cpu_usage]
 command=$SCRIPT_DIR/cpu_usage
-label=CPU
 interval=10
+LABEL=CPU 
 #min_width=CPU: 100.00%
 #T_WARN=50
 #T_CRIT=80
diff --git a/disk-io/README.md b/disk-io/README.md
index 8e10fac6..5f753011 100644
--- a/disk-io/README.md
+++ b/disk-io/README.md
@@ -14,11 +14,11 @@ iostat (sysstat package), fontawesome for the   hard disk icon (fonts-font-aw
 
 ```
 [disk-io]
-label=
 command=$SCRIPT_DIR/disk-io
 #command=$SCRIPT_DIR/disk-io -w 3 -M -P 0
 interval=persist
 markup=pango
+LABEL=
 #instance=/^sda/
 #DT=5
 #MB_ONLY=0 #0 or 1
diff --git a/disk-io/disk-io b/disk-io/disk-io
index 6e89bef5..b6bebc2f 100755
--- a/disk-io/disk-io
+++ b/disk-io/disk-io
@@ -5,7 +5,7 @@
 #
 # i3blocks blocklet script to monitor disk io
 
-label="${PREFIX:-""}"
+label="${LABEL:-""}"
 dt="${DT:-5}"
 MB_only="${MB_ONLY:-0}"
 kB_only="${KB_ONLY:-0}"
diff --git a/disk/README.md b/disk/README.md
index a1911682..d07c7508 100644
--- a/disk/README.md
+++ b/disk/README.md
@@ -12,7 +12,7 @@ which is disabled by default.
 ```
 [disk]
 command=$SCRIPT_DIR/disk
-label=HOME
+LABEL=HOME 
 #DIR=$HOME
 #ALERT_LOW=10
 interval=30
diff --git a/disk/disk b/disk/disk
index 47e769df..c34240d7 100755
--- a/disk/disk
+++ b/disk/disk
@@ -24,13 +24,13 @@ if [ "$1" = "-n" ] || [ "$2" = "-n" ]; then
     LOCAL_FLAG=""
 fi
 
-df -h -P $LOCAL_FLAG "$DIR" | awk -v alert_low=$ALERT_LOW '
+df -h -P $LOCAL_FLAG "$DIR" | awk -v label="$LABEL" -v alert_low=$ALERT_LOW '
 /\/.*/ {
 	# full text
-	print $4
+	print label $4
 
 	# short text
-	print $4
+	print label $4
 
 	use=$5
 
diff --git a/disk/i3blocks.conf b/disk/i3blocks.conf
index 5f8890ac..4295b02e 100644
--- a/disk/i3blocks.conf
+++ b/disk/i3blocks.conf
@@ -1,5 +1,5 @@
 [disk]
 command=$SCRIPT_DIR/disk
-label=HOME
+LABEL=HOME 
 #DIR=/mnt/data
 interval=30
diff --git a/docker/README.md b/docker/README.md
index 58119960..c6892d0a 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -13,7 +13,7 @@ Show the number of running `Docker` containers and latest created container IP a
 ```
 [docker]
 command=$SCRIPT_DIR/docker
-label=🐳
 color=#0db7ed
 interval=10
+LABEL=🐳 
 ```
diff --git a/docker/docker b/docker/docker
index d38271fa..5819cf9a 100755
--- a/docker/docker
+++ b/docker/docker
@@ -5,4 +5,4 @@ count=$(docker ps -q | wc -l | sed -r 's/^0$//g')
 # Recent docker container IP
 recent_ip=$(docker inspect -f "{{ .NetworkSettings.IPAddress }}" $(docker ps -ql))
 
-echo "$count: $recent_ip"
+echo "$LABEL$count: $recent_ip"
diff --git a/docker/i3blocks.conf b/docker/i3blocks.conf
index e3c26c45..5a8106ad 100644
--- a/docker/i3blocks.conf
+++ b/docker/i3blocks.conf
@@ -1,5 +1,5 @@
 [docker]
 command=$SCRIPT_DIR/docker
-label=🐳
 color=#0db7ed
 interval=10
+LABEL=🐳 
diff --git a/iface/README.md b/iface/README.md
index d4d95305..e60e7b9e 100644
--- a/iface/README.md
+++ b/iface/README.md
@@ -2,9 +2,8 @@
 
 Show network interface status.
 If the instance is not specified, it uses the interface for the default route.
-To display the label of the default interface, pass the -L switch.
-
-The address can be forced to IPv4 or IPv6 with -4 or -6 switches.
+Specify ipv6, ipv4, or either by setting `ADDRESS_FAMILY` to 
+`inet6`, `inet`, or `inet6?`.
 
 If an invalid interface is specified, nothing is printed.
 
@@ -17,8 +16,9 @@ If an invalid interface is specified, nothing is printed.
 ```
 [iface]
 command=$SCRIPT_DIR/iface
-#label=wlan0:
+#LABEL=wlan0:
 #IFACE=wlan0
+#ADDRESS_FAMILY=inet6?
 color=#00FF00
 interval=10
 ```
diff --git a/iface/i3blocks.conf b/iface/i3blocks.conf
index 9c091dd3..1202a852 100644
--- a/iface/i3blocks.conf
+++ b/iface/i3blocks.conf
@@ -1,6 +1,7 @@
 [iface]
 command=$SCRIPT_DIR/iface
-#label=wlan0:
+#LABEL=wlan0:
 #IFACE=wlan0
+#ADDRESS_FAMILY=inet6?
 color=#00FF00
 interval=10
diff --git a/iface/iface b/iface/iface
index 21263d24..75baa947 100755
--- a/iface/iface
+++ b/iface/iface
@@ -21,6 +21,9 @@
 IF="${IFACE:-$BLOCK_INSTANCE}"
 IF="${IF:-$(ip route | awk '/^default/ { print $5 ; exit }')}"
 
+# Exit if there is no default route
+[[ -z "$IF" ]] && exit
+
 #------------------------------------------------------------------------
 
 # As per #36 -- It is transparent: e.g. if the machine has no battery or wireless
@@ -29,8 +32,8 @@ IF="${IF:-$(ip route | awk '/^default/ { print $5 ; exit }')}"
 
 #------------------------------------------------------------------------
 
-AF=inet6?
-LABEL=""
+AF=${ADDRESS_FAMILY:-inet6?}
+LABEL="${LABEL:-}"
 
 for flag in "$1" "$2"; do
   case "$flag" in
@@ -55,7 +58,7 @@ if [[ "$IF" = "" ]] || [[ "$(cat /sys/class/net/$IF/operstate)" = 'down' ]]; the
 fi
 
 # if no interface is found, use the first device with a global scope
-IPADDR=$(ip addr show $IF | perl -n -e "/$AF ([^\/]+).* scope global/ && print \$1 and exit")
+IPADDR=$(ip addr show $IF | perl -n -e "/$AF ([^ \/]+).* scope global/ && print \$1 and exit")
 
 case $BLOCK_BUTTON in
   3) echo -n "$IPADDR" | xclip -q -se c ;;
diff --git a/mediaplayer/mediaplayer b/mediaplayer/mediaplayer
index 718e335b..f70a409d 100755
--- a/mediaplayer/mediaplayer
+++ b/mediaplayer/mediaplayer
@@ -120,6 +120,7 @@ sub playerctl {
     buttons('playerctl');
 
     my $artist = qx(playerctl $player_arg metadata artist);
+    chomp $artist;
     # exit status will be nonzero when playerctl cannot find your player
     exit(0) if $? || $artist eq '(null)';
 
diff --git a/memory/memory b/memory/memory
index 2dfaca36..90eb2c65 100755
--- a/memory/memory
+++ b/memory/memory
@@ -59,11 +59,11 @@ END {
 
 	# color
 	if (pct > 90) {
-		print("#FF0000\n")
+		print("#FF0000")
 	} else if (pct > 80) {
-		print("#FFAE00\n")
+		print("#FFAE00")
 	} else if (pct > 70) {
-		print("#FFF600\n")
+		print("#FFF600")
 	}
 }
 ' /proc/meminfo
diff --git a/rofi-calendar/README.md b/rofi-calendar/README.md
index 4127f6d2..1fa748e0 100644
--- a/rofi-calendar/README.md
+++ b/rofi-calendar/README.md
@@ -1,6 +1,6 @@
 # rofi-calendar
 
-Have a minimal calendar pop up in rofi when clicking the date blocklet
+Have a minimal calendar pop up in rofi when clicking the date blocklet (right click to show next month)
 
 ![](screenshot.png)
 
@@ -20,8 +20,8 @@ Have a minimal calendar pop up in rofi when clicking the date blocklet
 ```ini
 [rofi-calendar]
 command=$SCRIPT_DIR/rofi-calendar
-label=
 interval=3600
+LABEL= 
 #DATEFTM=+%a. %d. %b. %Y
 #SHORTFTM=+%d.%m.%Y
 ```
diff --git a/rofi-calendar/rofi-calendar b/rofi-calendar/rofi-calendar
index 637c873e..d4f2ec29 100755
--- a/rofi-calendar/rofi-calendar
+++ b/rofi-calendar/rofi-calendar
@@ -2,12 +2,23 @@
 
 DATEFTM="${DATEFTM:-+%a. %d. %b. %Y}"
 SHORTFMT="${SHORTFMT:-+%d.%m.%Y}"
+LABEL="${LABEL:-}"
 blockdate=$(date "$DATEFTM")
+shortblockdate=$(date "$SHORTFMT")
 
+year=$(date '+%Y')
+month=$(date '+%m')
 case "$BLOCK_BUTTON" in
-    1|2|3) date=$(date '+%A, %d. %B')
+    1|2)
+        date=$(date '+%A, %d. %B');;
+    3)
+        (( month == 12 )) && month=1 && year=$((year + 1)) || month=$((month + 1))
+        date=$(cal $month $year | sed -n '1s/^  *//;1s/  *$//p')
+esac
+case "$BLOCK_BUTTON" in
+    1|2|3)
 export TERM=xterm
-cal --color=always \
+cal --color=always $month $year \
     | sed 's/\x1b\[[7;]*m/\<b\>\<u\>/g' \
     | sed 's/\x1b\[[27;]*m/\<\/u\>\<\/b\>/g' \
     | tail -n +2 \
@@ -25,5 +36,5 @@ cal --color=always \
         -no-custom \
         -p "$date" > /dev/null 
     esac
-echo "$blockdate"
-date "$SHORTFMT"
+echo "$LABEL$blockdate"
+echo "$LABEL$shortblockdate"
diff --git a/shutdown_menu/shutdown_menu b/shutdown_menu/shutdown_menu
index c826e1aa..3949d6fd 100755
--- a/shutdown_menu/shutdown_menu
+++ b/shutdown_menu/shutdown_menu
@@ -138,7 +138,7 @@ function prepare_launcher() {
         -hlfg "${HLFG_COLOR}" -hlbg "${HLBG_COLOR}")
     launcher_exe="rofi"
     launcher_options=(-dmenu -i -lines "${menu_nrows}" -p "${ROFI_TEXT}" \
-        "${rofi_colors}" "${ROFI_OPTIONS[@]}")
+        "${rofi_colors[@]}" "${ROFI_OPTIONS[@]}")
   elif [[ "$1" == "zenity" ]]; then
     launcher_exe="zenity"
     launcher_options=(--list --title="${ZENITY_TITLE}" --text="${ZENITY_TEXT}" \
@@ -164,7 +164,7 @@ selection="$(printf '%s\n' "${!menu[@]}" | sort | "${launcher[@]}")"
 function ask_confirmation() {
   if [ "${launcher_exe}" == "rofi" ]; then
     confirmed=$(echo -e "Yes\nNo" | rofi -dmenu -i -lines 2 -p "${selection}?" \
-      "${rofi_colors}" "${ROFI_OPTIONS[@]}")
+      "${rofi_colors[@]}" "${ROFI_OPTIONS[@]}")
     [ "${confirmed}" == "Yes" ] && confirmed=0
   elif [ "${launcher_exe}" == "zenity" ]; then
     zenity --question --text "Are you sure you want to ${selection,,}?"
diff --git a/volume/README.md b/volume/README.md
index dcfc2679..66e15a47 100644
--- a/volume/README.md
+++ b/volume/README.md
@@ -29,8 +29,8 @@ as long as it agrees what you put for `signal=` in your i3blocks config.
 ```
 [volume]
 command=$SCRIPT_DIR/volume
-#label=♪
-label=VOL
+#LABEL=♪ 
+LABEL=VOL 
 interval=once
 signal=10
 #STEP=5%
diff --git a/volume/i3blocks.conf b/volume/i3blocks.conf
index 3e4f01c6..1e257e2a 100644
--- a/volume/i3blocks.conf
+++ b/volume/i3blocks.conf
@@ -1,7 +1,7 @@
 [volume]
 command=$SCRIPT_DIR/volume
-#label=♪
-label=VOL
+#LABEL=♪ 
+LABEL=VOL 
 interval=once
 signal=10
 #STEP=5%
diff --git a/volume/volume b/volume/volume
index 33dd0106..58c6001d 100755
--- a/volume/volume
+++ b/volume/volume
@@ -62,12 +62,14 @@ volume() {
 }
 
 format() {
+  
   perl_filter='if (/.*\[(\d+%)\] (\[(-?\d+.\d+dB)\] )?\[(on|off)\]/)'
   perl_filter+='{CORE::say $4 eq "off" ? "MUTE" : "'
   # If dB was selected, print that instead
   perl_filter+=$([[ $STEP = *dB ]] && echo '$3' || echo '$1')
   perl_filter+='"; exit}'
-  perl -ne "$perl_filter"
+  output=$(perl -ne "$perl_filter")
+  echo "$LABEL$output"
 }
 
 #------------------------------------------------------------------------