mirror of
https://github.com/GnoConsortium/gno.git
synced 2024-10-31 11:07:44 +00:00
16efada45b
initial checkin for GNO-formatted man page Makefile: let the builds know about the new man page.
145 lines
4.5 KiB
Plaintext
145 lines
4.5 KiB
Plaintext
.\" Copyright (c) 1980, 1990, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)login.1 8.1 (Berkeley) 6/9/93
|
|
.\"
|
|
.TH LOGIN 1 "15 April 1998" GNO "Commands and Applications"
|
|
.SH NAME
|
|
.BR login
|
|
\- log into the computer
|
|
.SH SYNOPSIS
|
|
.BR login
|
|
.RB [ -fp ]
|
|
.RB [ -h
|
|
.IR hostname ]
|
|
.RI [ user ]
|
|
.SH DESCRIPTION
|
|
The
|
|
.BR login
|
|
utility logs users (and pseudo-users) into the computer system.
|
|
.LP
|
|
If no user is specified, or if a user is specified and authentication
|
|
of the user fails,
|
|
.BR login
|
|
prompts for a user name.
|
|
Authentication of users is done via passwords.
|
|
.LP
|
|
The options are as follows:
|
|
.IP \fB-f\fR
|
|
The
|
|
.B -f
|
|
option is used when a user name is specified to indicate that proper
|
|
authentication has already been done and that no password need be
|
|
requested.
|
|
This option may only be used by the super-user or when an already
|
|
logged in user is logging in as themselves.
|
|
.IP \fB-h\fR
|
|
The
|
|
.B -h
|
|
option specifies the host from which the connection was received.
|
|
It is used by various daemons such as
|
|
.BR telnetd (8).
|
|
This option may only be used by the super-user.
|
|
.IP \fB-p\fR
|
|
By default,
|
|
.BR login
|
|
discards any previous environment.
|
|
The
|
|
.B -p
|
|
option disables this behavior.
|
|
.LP
|
|
If the file
|
|
.I /etc/nologin
|
|
exists,
|
|
.BR login
|
|
dislays its contents to the user and exits.
|
|
This is used by
|
|
.BR shutdown (8)
|
|
to prevent users from logging in when the system is about to go down.
|
|
.LP
|
|
If the file
|
|
.I /etc/fbtab
|
|
exists,
|
|
.BR login
|
|
changes the protection and ownership of certain devices specified in this
|
|
file.
|
|
.LP
|
|
Immediately after logging a user in,
|
|
.BR login
|
|
displays the system copyright notice, the date and time the user last
|
|
logged in, the message of the day as well as other information.
|
|
If the file
|
|
.I .hushlogin
|
|
exists in the user's home directory, all of these messages are suppressed.
|
|
This is to simplify logins for non-human users, such as
|
|
.BR uucp (1).
|
|
.BR Login
|
|
then records an entry in the
|
|
.BR wtmp (5)
|
|
and
|
|
.BR utmp (5)
|
|
files and executes the user's command interpretor.
|
|
.LP
|
|
Login enters information into the environment (see
|
|
.BR environ (7))
|
|
specifying the user's home directory (HOME), command interpreter (SHELL),
|
|
search path (PATH), terminal type (TERM) and user name (both LOGNAME and
|
|
USER).
|
|
.LP
|
|
The standard shells,
|
|
.BR csh (1)
|
|
and
|
|
.BR sh (1),
|
|
do not fork before executing the
|
|
.BR login
|
|
utility.
|
|
.SH FILES
|
|
.nf
|
|
\fB/etc/fbtab\fR changes device protections
|
|
\fB/etc/motd\fR message-of-the-day
|
|
\fB/etc/nologin\fR disallows logins
|
|
\fB/var/run/utmp\fR current logins
|
|
\fB/var/log/wtmp\fR login account records
|
|
\fB/var/mail/user\fR system mailboxes
|
|
\fB\&.hushlogin\fR makes login quieter
|
|
.SH SEE ALSO
|
|
.BR chpass (1),
|
|
.BR passwd (1),
|
|
.BR rlogin (1),
|
|
.BR getpass (3),
|
|
.BR fbtab (5),
|
|
.BR utmp (5),
|
|
.BR environ (7)
|
|
.SH HISTORY
|
|
A
|
|
.BR login
|
|
appeared in Version 6 AT&T UNIX.
|