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

if [ -z $(tr [A-Z] [a-z] <<< "$1") ]; then echo "Hello, world!"; else if [ -f hw/$(tr [A-Z] [a-z] <<< "$1") ]; then cat hw/$(tr [A-Z] [a-z] <<< "$1"); else echo "Your language does not exist"; fi; fi