<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/python
import sys
import chardet
x = sys.stdin.read()
enc = chardet.detect(x)['encoding']
sys.stdout.write(x.decode(enc).encode('UTF-8'))