81 lines
3.1 KiB
Groff
81 lines
3.1 KiB
Groff
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.\" Copyright 1991, Julianne Frances Haugh
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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 Julianne F. Haugh 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 JULIE HAUGH 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 JULIE HAUGH 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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.\" $Id: newgrp.1,v 1.4 1998/12/28 20:35:16 marekm Exp $
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.\"
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.TH NEWGRP 1
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.SH NAME
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newgrp \- Change group ID
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.br
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sg \- Execute command as different group ID
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.SH SYNOPSIS
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.BR newgrp " [" - ]
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[\fIgroup\fR]
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.br
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.BR sg " [" - ]
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[\fIgroup\fR [\fB-c\fR \fIcommand\fR]]
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.SH DESCRIPTION
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.B newgrp
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is used to change the current group ID during a login session.
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If the optional \fB\-\fR flag is given, the user's environment
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will be reinitialized as though the user had logged in, otherwise
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the current environment, including current working directory,
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remains unchanged.
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.PP
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.B newgrp
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changes the current real group ID to the named group, or to
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the default group listed in \fI/etc/passwd\fR if no group name
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is given.
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The user will be prompted for a password if they do not have a
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password and the group does, or if the user is not listed as a
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member and the group has a password.
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The user will be denied access if the group password is empty
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and the user is not listed as a member.
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.PP
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The
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.B sg
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command works similiar to \fBnewgrp\fR but does not replace the
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user's shell, so upon exit from a \fBsg\fR command, you are
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returned to your previous group ID.
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.B sg
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also accepts a command.
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The command will be executed with the Bourne shell and must be
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enclosed in quotes.
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.SH CAVEATS
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This version of \fBnewgrp\fR has many compilation options,
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only some of which may be in use at any particular site.
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.SH FILES
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/etc/passwd \- user account information
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.br
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/etc/group \- group information
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.SH SEE ALSO
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.BR login (1),
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.BR id (1),
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.BR su (1)
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.SH AUTHOR
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Julianne Frances Haugh (jfh@bga.com)
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