b2b49933f4
the advertising clause. Diffs provided in PR 22396 by Joel Baker, the changes were confirmed to the board by Matt Green.
190 lines
4.8 KiB
Groff
190 lines
4.8 KiB
Groff
.\" $NetBSD: rcmd.1,v 1.16 2003/10/13 14:22:20 agc Exp $
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.\"
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.\" Copyright (c) 1997 Matthew R. Green.
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.\" Copyright (c) 1983, 1990 The Regents of the University of California.
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.\" 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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.\" from: @(#)rsh.1 6.10 (Berkeley) 7/24/91
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.\" from: NetBSD: rsh.1,v 1.3 1997/01/09 20:21:14 tls Exp
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.\"
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.Dd May 26, 2003
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.Dt RCMD 1
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.Os
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.Sh NAME
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.Nm rcmd
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.Nd backend driver for
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.Xr rcmd 3
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.Sh SYNOPSIS
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.Nm
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.Op Fl Kdnx
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.Op Fl k Ar realm
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.Op Fl l Ar username
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.Op Fl u Ar localusername
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.Ar host
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.Ar command
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.Sh DESCRIPTION
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.Nm
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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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.Nm
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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 K
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The
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.Fl K
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option turns off all Kerberos authentication.
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.It Fl d
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The
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.Fl d
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option turns 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 k
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The
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.Fl k
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option causes
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.Nm
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to obtain tickets for the remote host in
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.Ar realm
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instead of the remote host's realm as determined by
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.Xr krb_realmofhost 3 .
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.It Fl l
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By default, the remote username is the same as the local username.
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The
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.Fl l
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option allows the remote name to be specified.
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Kerberos authentication is used, and authorization is determined
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as in
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.Xr rlogin 1 .
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.It Fl u
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The
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.Fl u
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option allows the local username to be specified.
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Only the superuser is allowed to use this option.
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.It Fl n
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The
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.Fl n
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option redirects 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 x
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The
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.Fl x
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option turns on
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.Tn DES
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encryption for all data exchange.
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This may introduce a significant delay in response time.
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.El
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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 rcmd otherhost cat remotefile \*[Gt]\*[Gt] 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 rcmd otherhost cat remotefile \&"\*[Gt]\*[Gt]\&" 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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.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 rsh 1 ,
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.Xr krb_realmofhost 3 ,
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.Xr krb_sendauth 3 ,
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.Xr rcmd 3 ,
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.Xr environ 7 ,
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.Xr kerberos 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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.Nx 1.3
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and is primarily derived from
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.Xr rsh 1 .
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Its purpose was to create a backend driver for
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.Xr rcmd 3
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that would allow the users of
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.Xr rcmd 3
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to no longer require super-user privileges.
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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 use
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.Nm rcmd
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to run an interactive command (like
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.Xr rogue 6
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or
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.Xr vi 1 ) .
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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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The stop signal,
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.Dv SIGSTOP ,
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will stop the local
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.Nm
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process only.
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This is arguably wrong, but currently hard to fix for reasons
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too complicated to explain here.
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