.\"$Id: chage.1,v 1.25 2005/04/26 12:22:08 kloczek Exp $ .\" Copyright 1990 - 1994 Julianne Frances Haugh .\" 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. Neither the name of Julianne F. Haugh 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 JULIE HAUGH 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 JULIE HAUGH 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. .TH CHAGE 1 .SH NAME chage \- change user password expiry information .SH SYNOPSIS .TP 6 \fBchage\fR [\fB\-m\fR \fImindays\fR] [\fB\-M\fR \fImaxdays\fR] [\fB\-d\fR \fIlastday\fR] [\fB\-I\fR \fIinactive\fR] [\fB\-E\fR \fIexpiredate\fR] [\fB\-W\fR \fIwarndays\fR] \fIuser\fR .TP 6 \fBchage\fR \fB\-l\fR \fIuser\fR .SH DESCRIPTION \fBchage\fR command changes the number of days between password changes and the date of the last password change. This information is used by the system to determine when a user must change her password. .PP The \fBchage\fR command is restricted to the root user, except for the \fB\-l\fR option, which may be used by an unprivileged user to determine when her password or account is due to expire. .SH OPTIONS The options which apply to the \fBchage\fR command are: .IP "\fB\-d\fR \fIlastday\fR" Set the number of days since January 1st, 1970 when the password was last changed. The date may also be expressed in the format YYYY\-MM\-DD (or the format more commonly used in your area). .IP "\fB\-E\fR \fIexpiredate\fR" Set the date on which the user's account will no longer be accessible. The \fIexpiredate\fR option is the number of days since January 1, 1970 on which the accounted is locked. The date may also be expressed in the format YYYY\-MM\-DD (or the format more commonly used in your area). A user whose account is locked must contact the system administrator before being able to use the system again. Passing the number \fI-1\fR as the \fIexpiredate\fR will remove an accounts expiration date. .IP "\fB\-I\fR \fIinactive\fR" Set the number of days of inactivity after a password has expired before the account is locked. The \fIinactive\fR option is the number of days of inactivity. A value of 0 disables this feature. A user whose account is locked must contact the system administrator before being able to use the system again. .IP "\fB\-m\fR \fImindays\fR" Set the minimum number of days between password changes. A value of zero for this field indicates that the user may change her password at any time. .IP "\fB\-M\fR \fImaxdays\fR" Set maximum number of days during which a password is valid. When \fImaxdays\fR plus \fIlastday\fR is less than the current day, the user will be required to change her password before being able to use her account. This occurrence can be planned for in advance by use of the \fB\-W\fR option, which provides the user with advance warning. .IP "\fB\-W\fR \fIwarndays\fR" Set the number of days of warning before a password change is required. The \fIwarndays\fR option is the number of days prior to the password expiring that a user will be warned her password is about to expire. .PP If none of the options are selected, \fBchage\fR operates in an interactive fashion, prompting the user with the current values for all of the fields. Enter the new value to change the field, or leave the line blank to use the current value. The current value is displayed between a pair of \fB[ ]\fR marks. .SH NOTE The \fBchage\fR program requires shadow password file to be available. Its functionality is not available when passwords are stored in the passwd file. .SH FILES \fI/etc/passwd\fR \- user account information .br \fI/etc/shadow\fR \- secure user account information .SH SEE ALSO .BR passwd (5), .BR shadow (5) .SH AUTHOR Julianne Frances Haugh