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NetBSD 6.1.5 - man page for rcmd (netbsd section 1)

RCMD(1) 			   BSD General Commands Manual				  RCMD(1)

     rcmd -- backend driver for rcmd(3)

     rcmd [-46dn] [-l username] [-p port] [-u localusername] host command

     rcmd executes command on host.

     rcmd copies its standard input to the remote command, the standard output of the remote com-
     mand 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; rcmd
     normally terminates when the remote command does.	The options are as follows:

     -4    Use IPv4 addresses only.

     -6    Use IPv6 addresses only.

     -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.  Another possible way to specify the remote
	   username is the notation user@host.

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

     -p port
	   Uses the given port instead of the one assigned to the service ``shell''.  May be
	   given either as symbolic name or as number.

     -u    The -u option allows the local username to be specified.  Only the superuser is
	   allowed to use this option.

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

	   rcmd otherhost cat remotefile >> localfile

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

	   rcmd otherhost cat remotefile ">>" other_remotefile

     appends remotefile to other_remotefile.


     rsh(1), rcmd(3), environ(7)

     The rcmd command appeared in NetBSD 1.3 and is primarily derived from rsh(1).  Its purpose
     was to create a backend driver for rcmd(3) that would allow the users of rcmd(3) to no
     longer require super-user privileges.

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

     You cannot use rcmd to run an interactive command (like rogue(6) or vi(1)).  Use rlogin(1)

     The stop signal, SIGSTOP, will stop the local rcmd process only.  This is arguably wrong,
     but currently hard to fix for reasons too complicated to explain here.

BSD					   May 31, 2011 				      BSD

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