in reply to executing an external program

See IPC::Open3 for capturing STDOUT and STDERR. Note that you should waitpid on the value returned from open3 and look into $? to get the exit status.

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}