.\" $OpenBSD: usermod.8,v 1.8 2001/04/20 21:39:50 jakob Exp $ */ .\" $NetBSD: usermod.8,v 1.4 2000/02/28 05:10:57 enami Exp $ */ .\" .\" .\" Copyright (c) 1999 Alistair G. Crooks. 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 Alistair G. Crooks. .\" 4. The name of the author may not be used to endorse or promote .\" products derived from this software without specific prior written .\" permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. .\" .\" .Dd April 3, 2001 .Dt USERMOD 8 .Os .Sh NAME .Nm usermod .Nd modify user login information .Sh SYNOPSIS .Nm .Op Fl G Ar secondary-group[,group,...] .Op Fl c Ar comment .Op Fl d Ar home-dir .Op Fl e Ar expiry-time .Op Fl f Ar password-change-secs .Op Fl g Ar gid/name/=uid .Op Fl l Ar new-login .Op Fl m .Op Fl o .Op Fl p Ar password .Op Fl s Ar shell .Op Fl u Ar uid .Op Fl v .Ar user .Sh DESCRIPTION The .Nm utility modifies user login information on the system. Default values for the user are taken from the information provided in the .Pa /etc/usermgmt.conf file. .Pp After setting any defaults, and then values from that file, the command line options are processed: .Bl -tag -width Ds .It Fl G Ar secondary-group[,group,...] are the secondary groups the user will be a member of in the .Pa /etc/group file. This list of groups will replace any old group memberships. .It Fl c Ar comment is the comment field (also, for historical reasons known as the GECOS field) which will be added for the user, and typically will include the username, and, perhaps, contact information for the user. .It Fl d Ar home-directory is the home directory which will be created and populated for the user, should the -m option be specified. .It Fl e Ar expiry-time provides the date at which the account expires. This should be given in a standard time format (%c). This is unset by default. This value can be preset for all users by using the .Ar expire field in /etc/usermgmt.conf file - it has the format: .Ar expire . .It Fl f Ar password-change-secs provides the number of seconds since the epoch (UTC) at which the current password change expire. This can be used to implement password aging. A value of 0 can be used to switch off this feature. The default value for this field is 0. See .Xr passwd 5 for more details. This value can be preset for all users by using the .Ar inactive field in the .Pa /etc/usermgmt.conf file - it has the format: .Ar inactive . .It Fl g Ar gid/name/=uid gives the group name or identifier to be used for the new user's primary group. If this is .Ar "-g=uid" , then a uid and gid will be picked which are both unique and the same, and a line added to .Pa /etc/group to describe the new group. This value can be preset for all users by using the .Ar gid field in the .Xr /usr/share/adduser/defaults file - it has the format: .Ar group . .It Fl l Ar new-user gives the new user name. It must consist of alphanumeric characters, or the characters '.', '-' or '_'. .It Fl m moves the home directory from its old position to the new one. .It Fl o allows duplicate uids to be given. .It Fl p Ar password specifies an already-encrypted password for the new user. This password can then be changed by using the .Xr chpass 1 utility. This value can be preset for all users by using the .Ar password field in the .Pa /etc/usermgmt.conf file - it has the format: .Ar password . .It Fl s Ar shell specifies the login shell for the new user. This value can be preset for all users by using the .Ar shell field in the .Xr /usr/share/adduser/defaults file - it has the format: .Ar shell . .It Fl u Ar uid specifies a new uid for the user. Boundaries for this value can be preset for all users by using the .Ar range field in the .Pa /etc/usermgmt.conf file - they have the format: .Ar range .. . .It Fl v enables verbose mode - explain the commands as they are executed. .El .Pp The .Nm utility exits 0 on success, and >0 if an error occurs. .Sh FILES .Bl -tag -width /etc/usermgmt.conf -compact .It Pa /etc/usermgmt.conf .It Pa /etc/skel/.[A-z]* .El .Sh SEE ALSO .Xr chpass 1 , .Xr passwd 5 , .Xr group 5 .Sh HISTORY The .Nm utility first appeared in .Ox 2.7 . .Sh AUTHOR The .Nm utility was written by Alistair G. Crooks (agc@netbsd.org).