<oerjan> learn print_args_or_input Is a utility command that makes it easy to create a shell script that can be used either as a pipe or directly as a HackEgo command. Use as print_args_or_input "$@" | yourShellCode . See also shebang_args_or_input.

#!/usr/bin/perl -w
if (defined($_=shift)) { s/ *$//;  s/ +/ @ /g; exec "bin/@", $_ . " ? welcome.sv"; } else { exec "bin/?", "welcome.sv"; }