in reply to Perl on a bootable USB key

What's the best way to do that ?

"Best" is what best fits your needs. If how you're doing it works and is ok for you, it's best ;-)

Remember, There's More Than One Best Way To Do It..

--shmem

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