dev/shquote

   1 #!/bin/sh
   2
   3 set -eu
   4
   5 case "$#" in
   6     0) src="$(cat)";;
   7     1) src="$1";;
   8     *)
   9         echo "Usage: shquote [SOMETHING]" 1>&2
  10         exit 2
  11         ;;
  12 esac
  13
  14 printf %s\\n "$src" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/'/"