<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 [ -z "$1" ];then exec echo "Please give me something to check.";fi;bash -c "if [[ $1 ]];then echo 'True.';else echo 'False.';fi"