user@host ~ $ cat Peter…
Peter Piper picked a peck of Pickled Peppers.
user@host ~ $ cat Peter… | tr 'ie' 'ei'
Pitir Pepir peckid a pick of Pecklid Pippirs.
user@host ~ $ cat Peter… | tr 'Ppd' 't'
teter titer ticket a teck of ticklet tetters.
user@host ~ $ cat Peter… | tr '[A-Z][:space:]' '[a-z]-'
peter-piper-picked-a-peck-of-pickled-peppers.-user@host ~ $
user@host ~ $ cat Peter… | tr -s per no
Poto Pino nickod a nock of Picklod Ponos.
user@host ~ $ cat Peter… | tr -d eio
Ptr Ppr pckd a pck f Pckld Ppprs.