On 1/9/2014 3:33 PM, Cliff Pratt wrote: > I was shocked and horrified to find out that RHEL (and presumably CentOS) > and Ubuntu no longer implement the 'rot13' program. tr A-Za-z N-ZA-Mn-za-m <infile >outfile example... $ echo this is a message | tr A-Za-z N-ZA-Mn-za-m guvf vf n zrffntr $ echo guvf vf n zrffntr | tr A-Za-z N-ZA-Mn-za-m this is a message -- john r pierce 37N 122W somewhere on the middle of the left coast