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

NAME
     rcmd -- backend driver for	rcmd(3)

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

DESCRIPTION
     rcmd executes command on host.

     rcmd 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; 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 pos-
	   sible 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	ma-
     chine, 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.

FILES
     /etc/hosts

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

HISTORY
     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 privi-
     leges.

BUGS
     If	you are	using csh(1) and put a rcmd 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 re-
     direct 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) instead.

     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

NAME | SYNOPSIS | DESCRIPTION | FILES | SEE ALSO | HISTORY | BUGS

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