<oerjan> learn `edit <file> gives you a url, then in your browser: (1) Press Fetch (2) Make your changes (3) Press edit (4) Paste the command line at the top into the channel.

#!/bin/bash
interp="$1"; script="$2"; shift 2; if [ "$#" -eq 1 ]; then printf '%s\n' "$1"; elif [ "$#" -eq 0 ]; then cat; fi | { shift; $interp "$script" "$@"; }