RSH(1) OpenBSD Reference Manual RSH(1)NAMErsh - remote shell
SYNOPSISrsh [-dn] [-l username] hostname [command]
DESCRIPTIONrsh executes command on hostname.
Note: rsh has been deprecated in favor of ssh(1). Use of rsh is
discouraged due to the inherent insecurity of host-based authentication.
rsh copies its standard input to the remote command, the standard output
of the remote command to its standard output, and the standard error 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:
-d Enable socket debugging (using setsockopt(2)) on the TCP sockets
used for communication with the remote host.
-l username
By default, the remote username is the same as the local
username. The -l option allows the remote name to be specified.
-n Redirect input from the special device /dev/null (see the BUGS
section of this manual page).
If no command is specified, you will be logged in on the remote host
using ssh(1).
If rsh is not invoked with the standard program name (``rsh''), it uses
this name as its hostname argument.
Shell meta-characters which are not quoted are interpreted on local
machine, while quoted meta-characters are interpreted on the remote
machine. 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 ALSOssh(1), rcmd(3)HISTORY
The rsh command appeared in 4.2BSD.
BUGS
If you are using csh(1) and put a rsh in the background without
redirecting 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.
Stop signals stop the local rsh process only; this is arguably wrong, but
currently hard to fix for reasons too complicated to explain here.
OpenBSD 4.9 May 31, 2007 OpenBSD 4.9
