<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

echo -n "$(basename "$0")${@:+ }$@: "; tail -n+2 "$0" | xargs; exit
we forgot to implement this command