<fizzie> ` echo -e \'#! /bin/bash\\ncmd="$1"\\nshift\\nf="$*"\\nif [[ -z "$f" && "$cmd" =~ *\\\\ * ]]; then f="${cmd#* }"; cmd="${cmd%% *}"; fi\\nif [[ -z "$f" ]]; then echo try: \\\\`f command filename; else "$cmd" "$(< "$f")"; fi\' > bin/f

#! /bin/bash
cmd="$1"
shift
f="$*"
if [[ -z "$f" && "$cmd" =~ *\ * ]]; then f="${cmd#* }"; cmd="${cmd%% *}"; fi
if [[ -z "$f" ]]; then echo try: \`f command filename; else "$cmd" "$(< "$f")"; fi