NAME¶

mrsh — munge authenticated remote shell

SYNOPSIS¶

DESCRIPTION¶

Mrsh is a modification of the rsh command that uses munge authentication instead of reserved ports for security. Just like rsh, mrsh executes command on host.

Mrsh 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; mrsh normally terminates when the remote command does. The options are as follows:

-d

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

-l

By default, the remote username is the same as the local username. The -l option allows the remote name to be specified.

-n

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

-M

The -M option allows an alternate munge unix domain path to be specified.

-P

The -P option allows an alternate service port to be specified.

-V

The -V option outputs the package and protocol version.

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

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

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

appends remotefile to other_remotefile.

SEE ALSO¶

mrlogin(1)

BUGS¶

If you are using csh(1) and put a mrsh 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 mrsh to /dev/null using the -n option.

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

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