<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

if [ -a "bin/${1%% = *}" ];then exec echo "${1%% = *}: Already exists.";fi;echo "${1#* = }" > "bin/${1%% = *}";chmod +x "bin/${1%% = *}"