fbbd9655e5
Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
173 lines
4.4 KiB
Groff
173 lines
4.4 KiB
Groff
.\" Copyright (c) 1983, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)rsh.1 8.1 (Berkeley) 6/6/93
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.\" $FreeBSD$
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.\"
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.Dd October 16, 2002
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.Dt RSH 1
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.Os
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.Sh NAME
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.Nm rsh
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.Nd remote shell
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.Sh SYNOPSIS
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.Nm
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.Op Fl 46dn
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.Op Fl l Ar username
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.Op Fl t Ar timeout
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.Ar host
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.Op command
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.Sh DESCRIPTION
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The
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.Nm
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utility executes
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.Ar command
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on
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.Ar host .
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.Pp
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The
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.Nm
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utility copies its standard input to the remote command, the standard
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output of the remote command to its standard output, and the
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standard error of the remote command to its standard error.
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Interrupt, quit and terminate signals are propagated to the remote
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command;
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.Nm
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normally terminates when the remote command does.
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The options are as follows:
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.Bl -tag -width flag
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.It Fl 4
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Use IPv4 addresses only.
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.It Fl 6
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Use IPv6 addresses only.
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.It Fl d
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Turn on socket debugging (using
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.Xr setsockopt 2 )
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on the
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.Tn TCP
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sockets used for communication with the remote host.
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.It Fl l Ar username
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Allow the remote
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.Ar username
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to be specified.
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By default, the remote username is the same as the local username.
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Authorization is determined
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as in
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.Xr rlogin 1 .
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.It Fl n
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Redirect input from the special device
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.Pa /dev/null
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(see the
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.Sx BUGS
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section of this manual page).
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.It Fl t Ar timeout
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Allow a
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.Ar timeout
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to be specified (in seconds).
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If no
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data is sent or received in this time,
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.Nm
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will exit.
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.El
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.Pp
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If no
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.Ar command
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is specified, you will be logged in on the remote host using
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.Xr rlogin 1 .
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.Pp
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Shell metacharacters which are not quoted are interpreted on local machine,
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while quoted metacharacters are interpreted on the remote machine.
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For example, the command
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.Pp
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.Dl rsh otherhost cat remotefile >> localfile
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.Pp
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appends the remote file
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.Ar remotefile
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to the local file
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.Ar localfile ,
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while
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.Pp
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.Dl rsh otherhost cat remotefile \&">>\&" other_remotefile
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.Pp
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appends
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.Ar remotefile
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to
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.Ar other_remotefile .
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.\" .Pp
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.\" Many sites specify a large number of host names as commands in the
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.\" directory /usr/hosts.
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.\" If this directory is included in your search path, you can use the
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.\" shorthand ``host command'' for the longer form ``rsh host command''.
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.Sh FILES
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.Bl -tag -width /etc/hosts -compact
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.It Pa /etc/hosts
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.El
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.Sh SEE ALSO
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.Xr rlogin 1 ,
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.Xr setsockopt 2 ,
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.Xr rcmd 3 ,
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.Xr ruserok 3 ,
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.Xr hosts 5 ,
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.Xr hosts.equiv 5 ,
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.Xr rlogind 8 ,
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.Xr rshd 8
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.Sh HISTORY
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The
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.Nm
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command appeared in
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.Bx 4.2 .
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.Sh BUGS
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If you are using
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.Xr csh 1
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and put a
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.Nm
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in the background without redirecting its input away from the terminal,
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it will block even if no reads are posted by the remote command.
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If no input is desired you should redirect the input of
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.Nm
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to
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.Pa /dev/null
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using the
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.Fl n
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option.
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.Pp
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You cannot run an interactive command
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(like
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.Xr ee 1
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or
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.Xr vi 1 )
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using
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.Nm ;
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use
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.Xr rlogin 1
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instead.
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.Pp
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Stop signals stop the local
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.Nm
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process only; this is arguably wrong, but currently hard to fix for reasons
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too complicated to explain here.
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