Script to set urxvt background colour on the fly.

diff --git a/opt/bin/ucolour b/opt/bin/ucolour
new file mode 100755 (executable)
index 0000000..796afda
--- /dev/null
+++ b/opt/bin/ucolour
@@ -0,0 +1,51 @@
+#!/bin/bash
+#
+# ucolour: Set urxvt (or terminal which understands the same escape sequences)
+#          colours.
+# Usage: ucolour option <colour> [option <colour> ...]
+# Options: -b   Set background.
+#          -B   Set highlight background.
+#          -c   Set cursor.
+#          -f   Set foreground.
+#          -F   Set highlight foreground.
+#          -m   Set mouse.
+#
+
+BG=
+FG=
+bg=
+fg=
+cu=
+mo=
+tmux_prefix=
+while getopts ":B:F:b:c:f:m:" opt; do
+  case $opt in
+    B) BG=$OPTARG;;
+    F) FG=$OPTARG;;
+    b) bg=$OPTARG;;
+    c) cu=$OPTARG;;
+    f) fg=$OPTARG;;
+    m) mo=$OPTARG;;
+  esac
+done
+shift $((OPTIND-1))
+
+if [ -z "$BG$FG$bg$cu$fg$mo" ]; then
+  echo >&2 "Usage: ucolour option <colour> [option <colour> ...]"
+  echo >&2 "Options: -b   Set background."
+  echo >&2 "         -B   Set highlight background."
+  echo >&2 "         -c   Set cursor."
+  echo >&2 "         -f   Set foreground."
+  echo >&2 "         -F   Set highlight foreground."
+  echo >&2 "         -m   Set mouse."
+  exit 1
+fi
+
+[ -n "$TMUX" ] && tmux_prefix="\033Ptmux;\033"
+[ -n "$BG" ] && echo -en "$tmux_prefix\033]17;$BG\007"
+[ -n "$FG" ] && echo -en "$tmux_prefix\033]19;$FG\007"
+[ -n "$bg" ] && echo -en "$tmux_prefix\033]11;$bg\007"
+[ -n "$cu" ] && echo -en "$tmux_prefix\033]12;$cu\007"
+[ -n "$fg" ] && echo -en "$tmux_prefix\033]10;$fg\007"
+[ -n "$mo" ] && echo -en "$tmux_prefix\033]13;$mo\007"
+exit 0