RSH(1)                     Commands and Applications                    RSH(1)

NAME

       rsh - remote shell

SYNOPSIS

       rsh [-Kdnx] [-k realm] [-l username] host [command]

DESCRIPTION

       Rsh executes command on host.

       Rsh  copies its standard input to the remote command, the standard out‐
       put of the remote command to its standard output, and the standard  er‐
       ror  of  the remote command to its standard error.  Interrupt, quit and
       terminate signals are propagated to the remote  command;  rsh  normally
       terminates when the remote command does.  The options are as follows:

       -K     The -K option turns off all Kerberos authentication.

       -d     The -d option turns on socket debugging (using setsockopt(2)) on
              the TCP sockets used for communication with the remote host.

       -k     The -k option causes rsh to obtain tickets for the  remote  host
              in  realm  instead  of  the remote host's realm as determined by
              krb_realmofhost(3).

       -l     By default, the remote username is the same as the  local  user‐
              name.   The  -l  option  allows the remote name to be specified.
              Kerberos authentication is used, and authorization is determined
              as in rlogin(1).

       -n     The  -n option redirects input from the special device /dev/null
              (see the BUGS section of this manual page).

       -x     The -x option turns on DES encryption  for  all  data  exchange.
              This may introduce a significant delay in response time.

       If  no  command  is specified, you will be logged in on the remote host
       using rlogin(1).

       Shell metacharacters which are not quoted are interpreted on local  ma‐
       chine,  while  quoted  metacharacters are interpreted on the remote ma‐
       chine.  For example, the command

            rsh otherhost cat remotefile >> localfile

       appends the remote file remotefile to the local file localfile, while

            rsh otherhost cat remotefile ">>" other_remotefile

       appends remotefile to other_remotefile.

FILES

       /etc/hosts

SEE ALSO

       rlogin(1), kerberos(3), krb_sendauth(3), krb_realmofhost(3)

HISTORY

       The rsh command appeared in 4.2BSD.

BUGS

       If you are using csh(1) and put a rsh in the background  without  redi‐
       recting  its  input  away  from  the terminal, it will block even if no
       reads are posted by the remote command.  If no  input  is  desired  you
       should redirect the input of rsh to /dev/null using the -n option.

       You  cannot  run  an interactive command (like rogue(6) or vi(1)) using
       rsh; use rlogin(1) instead.

       Stop signals stop the local rsh process only; this is  arguably  wrong,
       but currently hard to fix for reasons too complicated to explain here.



GNO                              16 April 1998                          RSH(1)