rot13 en bash
echo '[email protected]' | tr 'A-Za-z' 'N-ZA-Mn-za-m'
mtl_Guy
echo '[email protected]' | tr 'A-Za-z' 'N-ZA-Mn-za-m'
echo '[email protected]' | rot13
alias rot13="tr 'A-Za-z' 'N-ZA-Mn-za-m'"