Annotation of src/usr.bin/rsh/rsh.1, Revision 1.4
1.4 ! aaron 1: .\" $OpenBSD: rsh.1,v 1.3 1997/07/27 06:28:23 deraadt Exp $
1.1 deraadt 2: .\" Copyright (c) 1983, 1990 The Regents of the University of California.
3: .\" All rights reserved.
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33: .\" from: @(#)rsh.1 6.10 (Berkeley) 7/24/91
34: .\"
35: .Dd July 24, 1991
36: .Dt RSH 1
37: .Os BSD 4.2
38: .Sh NAME
39: .Nm rsh
40: .Nd remote shell
41: .Sh SYNOPSIS
42: .Nm rsh
43: .Op Fl Kdnx
44: .Op Fl k Ar realm
45: .Op Fl l Ar username
46: .Ar host
1.4 ! aaron 47: .Op Ar command
1.1 deraadt 48: .Sh DESCRIPTION
1.4 ! aaron 49: .Nm rsh
1.1 deraadt 50: executes
51: .Ar command
52: on
53: .Ar host .
54: .Pp
1.4 ! aaron 55: .Nm rsh
1.1 deraadt 56: copies its standard input to the remote command, the standard
57: output of the remote command to its standard output, and the
58: standard error of the remote command to its standard error.
59: Interrupt, quit and terminate signals are propagated to the remote
60: command;
61: .Nm rsh
62: normally terminates when the remote command does.
63: The options are as follows:
64: .Bl -tag -width flag
65: .It Fl K
66: The
67: .Fl K
68: option turns off all Kerberos authentication.
69: .It Fl d
70: The
71: .Fl d
72: option turns on socket debugging (using
73: .Xr setsockopt 2 )
74: on the
75: .Tn TCP
76: sockets used for communication with the remote host.
77: .It Fl k
78: The
79: .Fl k
80: option causes
81: .Nm rsh
82: to obtain tickets for the remote host in
83: .Ar realm
84: instead of the remote host's realm as determined by
85: .Xr krb_realmofhost 3 .
86: .It Fl l
87: By default, the remote username is the same as the local username.
88: The
89: .Fl l
90: option allows the remote name to be specified.
91: Kerberos authentication is used, and authorization is determined
92: as in
93: .Xr rlogin 1 .
94: .It Fl n
95: The
96: .Fl n
97: option redirects input from the special device
98: .Pa /dev/null
99: (see the
100: .Sx BUGS
101: section of this manual page).
102: .It Fl x
103: The
104: .Fl x
105: option turns on
106: .Tn DES
107: encryption for all data exchange.
108: This may introduce a significant delay in response time.
109: .El
110: .Pp
111: If no
112: .Ar command
113: is specified, you will be logged in on the remote host using
114: .Xr rlogin 1 .
115: .Pp
1.4 ! aaron 116: Shell meta-characters which are not quoted are interpreted on local machine,
! 117: while quoted meta-characters are interpreted on the remote machine.
1.1 deraadt 118: For example, the command
119: .Pp
120: .Dl rsh otherhost cat remotefile >> localfile
121: .Pp
122: appends the remote file
123: .Ar remotefile
124: to the local file
125: .Ar localfile ,
126: while
127: .Pp
128: .Dl rsh otherhost cat remotefile \&">>\&" other_remotefile
129: .Pp
130: appends
131: .Ar remotefile
132: to
133: .Ar other_remotefile .
134: .\" .Pp
135: .\" Many sites specify a large number of host names as commands in the
136: .\" directory /usr/hosts.
137: .\" If this directory is included in your search path, you can use the
138: .\" shorthand ``host command'' for the longer form ``rsh host command''.
139: .Sh FILES
140: .Bl -tag -width /etc/hosts -compact
141: .It Pa /etc/hosts
142: .El
143: .Sh SEE ALSO
144: .Xr rlogin 1 ,
145: .Xr kerberos 3 ,
1.4 ! aaron 146: .Xr krb_realmofhost 3 ,
1.1 deraadt 147: .Xr krb_sendauth 3 ,
1.3 deraadt 148: .Xr rcmd 3
1.1 deraadt 149: .Sh HISTORY
150: The
151: .Nm rsh
152: command appeared in
153: .Bx 4.2 .
154: .Sh BUGS
155: If you are using
156: .Xr csh 1
157: and put a
158: .Nm rsh
159: in the background without redirecting its input away from the terminal,
160: it will block even if no reads are posted by the remote command.
161: If no input is desired you should redirect the input of
162: .Nm rsh
163: to
164: .Pa /dev/null
165: using the
166: .Fl n
167: option.
168: .Pp
169: You cannot run an interactive command
170: (like
171: .Xr rogue 6
172: or
173: .Xr vi 1 )
174: using
175: .Nm rsh ;
176: use
177: .Xr rlogin 1
178: instead.
179: .Pp
180: Stop signals stop the local
181: .Nm rsh
182: process only; this is arguably wrong, but currently hard to fix for reasons
183: too complicated to explain here.
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