229 lines
6.2 KiB
Groff
229 lines
6.2 KiB
Groff
.\" $NetBSD: usermod.8,v 1.12 2001/09/05 21:37:32 christos Exp $ */
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.\"
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.\"
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.\" Copyright (c) 1999 Alistair G. Crooks. 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. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by Alistair G. Crooks.
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.\" 4. The name of the author may not be used to endorse or promote
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.\" products derived from this software without specific prior written
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.\" permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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.\" OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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.\" WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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.\" DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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.\" GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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.\" WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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.\" NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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.\" SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\"
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.Dd September 5, 2001
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.Dt USERMOD 8
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.Os
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.Sh NAME
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.Nm usermod
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.Nd modify user login information
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.Sh SYNOPSIS
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.Nm
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.Op Fl mov
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.Op Fl G Ar secondary-group
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.Op Fl c Ar comment
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.Op Fl d Ar home-dir
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.Op Fl e Ar expiry-time
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.Op Fl f Ar inactive-secs
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.Oo
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.Fl g Ar gid | name | Li =uid
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.Oc
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.Op Fl L Ar login-class
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.Op Fl l Ar new-login
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.Op Fl p Ar password
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.Op Fl s Ar shell
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.Op Fl u Ar uid
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.Ar user
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.Sh DESCRIPTION
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The
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.Nm
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utility modifies user login information on the system.
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Default values for the user are taken from the information
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provided in the
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.Pa /etc/usermgmt.conf
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file.
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.Pp
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After setting any defaults, and then values from that file,
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the command line options are processed:
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.Bl -tag -width Ds
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.It Fl G Ar secondary-group
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is the secondary group to which the user will be added in the
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.Pa /etc/group
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file.
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.It Fl c Ar comment
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is the comment field (also, for historical reasons known as the
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GECOS field) which will be added for the user, and typically will include
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the username, and, perhaps, contact information for the user.
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.It Fl d Ar home-directory
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Sets the home directory to
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.Ar home-directory
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without populating it; if the
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.Fl m
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option is specified, tries to move the old home directory to
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.Ar home-directory .
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.It Fl e Ar secs-to-expiry
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provides the number of seconds since the epoch (UTC) at
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which the current password change expire. This
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can be used to implement password aging.
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A value of
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0 can be used to switch off this feature.
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The default value for this field is 0.
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See
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.Xr passwd 5
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for more details.
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This value can be preset for all users
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by using the
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.Ar expire
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field in the
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.Pa /etc/usermgmt.conf
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file - it has the format:
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.D1 Ic expire Ar secs-to-expiry
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.It Xo
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.Fl g Ar gid | name | Li =uid
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.Xc
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gives the group name or identifier to be used for the new user's primary group.
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If this is
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.Ql =uid ,
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then a uid and gid will be picked which are both unique
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and the same, and a line added to
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.Pa /etc/group
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to describe the new group.
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This value can be preset for all users
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by using the
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.Ar gid
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field in the
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.Pa /etc/usermgmt.conf
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file - it has the format:
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.br \" XXX Shouldn't be necessary -- mdoc bug? --bjh21
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.Bd -ragged -offset indent -compact
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.Ic group
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.Ar gid | name | Li =uid
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.Ed
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.It Fl L Ar login-class
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This option sets the login class for the user being created. See
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.Xr login.conf 5
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for more information on user login classes. Thie value can be preset
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for all users by using the
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.Ar class
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field in the
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.Pa /etc/usermgmt.conf
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file - it has the format:
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.br \" XXX skip empty line? - HF
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.Bd -ragged -offset indent -compact
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.Ic class
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.Ar login-class
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.Ed
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.It Fl l Ar new-user
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gives the new user name.
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It must consist of alphanumeric characters, or the characters
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.Ql \&. ,
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.Ql \&-
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or
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.Ql \&_ .
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.It Fl m
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moves the home directory from its old position to the new one.
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If
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.Fl d
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is not specified, the
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.Ar new-user
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argument of the
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.Fl l
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option is used; one of
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.Fl d
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and
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.Fl l
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is needed.
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.It Fl o
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allows duplicate uids to be given.
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.It Fl p Ar password
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specifies an already-encrypted password for the new user.
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This password can then be changed by using the
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.Xr chpass 1
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utility.
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This value can be preset for all users
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by using the
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.Ar password
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field in the
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.Pa /etc/usermgmt.conf
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file - it has the format:
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.D1 Ic password Ar encrypted-password
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.It Fl s Ar shell
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specifies the login shell for the new user.
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This value can be preset for all users
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by using the
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.Ar shell
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field in the
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.Pa /etc/usermgmt.conf
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file - it has the format:
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.D1 Ic shell Ar login-shell
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.It Fl u Ar uid
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specifies a new uid for the user.
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Boundaries for this value can be preset for all users
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by using the
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.Ar range
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field in the
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.Pa /etc/usermgmt.conf
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file - they have the format:
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.br \" XXX
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.Bd -ragged -offset indent -compact
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.Ic range
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.Ar starting-uid Ns Li .. Ns Ar ending_uid
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.Ed
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.It Fl v
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enables verbose mode - explain the commands as they are executed.
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.El
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.Pp
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Once the information has been verified,
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.Nm
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uses
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.Xr pwd_mkdb 8
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to update the user database. This is run in the background, and,
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at very large sites could take several minutes. Until this update
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is completed, the password file is unavailable for other updates
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and the new information is not available to programs.
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.Pp
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The
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.Nm
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utility exits 0 on success, and >0 if an error occurs.
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.Sh FILES
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.Bl -tag -width /etc/usermgmt.conf -compact
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.It Pa /etc/usermgmt.conf
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.El
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.Sh SEE ALSO
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.Xr chpass 1 ,
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.Xr passwd 5 ,
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.Xr group 5 ,
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.Xr pwd_mkdb 8
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.Sh HISTORY
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The
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.Nm
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utility first appeared in
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.Nx 1.5 .
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It is based on the
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.Ar addnerd
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package by the same author.
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.Sh AUTHOR
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The
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.Nm
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utility was written by Alistair G. Crooks (agc@netbsd.org).
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