<izabera> ` echo \'for file do mapfile -t lines < "$file"; for (( i = ${#lines[@]} -1; i >= 0; i-- )) do printf "%s\\n" "${lines[i]}"; done done\' >> bin/tac

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