rsh

from The Free On-line Dictionary of Computing (8 July 2008)

rsh

   Remote shell.

   A {Berkeley Unix} networking command to execute a given
   command on a remote {host}, passing it input and receiving its
   output.  Rsh communicates with a {daemon} on the remote host.
   It is sometimes called remsh to avoid confusion with the
   {restricted shell}, also called "rsh".

   {Unix manual page}: rsh(1).

   (1994-12-08)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

RSH
       Remote SHell (Unix, BSD, Shell)

from V.E.R.A. -- Virtual Entity of Relevant Acronyms (June 2006)

RSH
       Restricted SHell (Unix, Shell)