Add hex2rgb script

home/dot_local/bin/executable_hex2rgb

@@ -0,0 +1,27 @@
+#!/bin/sh
+##? ~/bin/hex2rgb - convert color hex to rgb
+# '#C0FFEE' => 192 255 238
+# 'DEADBEEF' => 222 173 190 239
+# 'fab' => 255 170 187
+# Shamelessly stolen from https://stackoverflow.com/questions/7253235/convert-hexadecimal-color-to-decimal-rgb-values-in-unix-shell-script/75643474#75643474
+
+
+__hex2rgb() {
+  # reset $1 to scrubbed hex: '#01efa9' becomes '01EFA9'
+  set -- "$(echo "$1" | tr -d '#' | tr '[:lower:]' '[:upper:]')"
+  START=0
+  STR=
+  while (( START < ${#1} )); do
+    # double each char under len 6 : FAB => FFAABB
+    if (( ${#1} < 6 )); then
+      STR="$(printf "${1:${START}:1}%.0s" 1 2)"
+      (( START += 1 ))
+    else
+      STR="${1:${START}:2}"
+      (( START += 2 ))
+    fi
+    echo "ibase=16; ${STR}" | bc
+  done
+  unset START STR
+}
+__hex2rgb "$@"