+
−#! /bin/bash
+
−cmd="$1"
+
−shift
+
−f="$*"
+
−if [[ -z "$f" && "$cmd" == *\ * ]]; then f="${cmd#* }"; cmd="${cmd%% *}"; fi
+
−if [[ -z "$f" ]]; then echo try: \`f command filename; elif [[ -e "$f" ]]; then "$cmd" "$(< "$f")"; else echo no such file: "$f"; fi