99 lines
4.7 KiB
Groff
99 lines
4.7 KiB
Groff
.\"$Id: chage.1,v 1.13 2004/08/04 13:02:23 kloczek Exp $
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.\" Copyright 1990 - 1994 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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.TH CHAGE 1
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.SH NAME
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chage \- change user password expiry information
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.SH SYNOPSIS
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.TP 6
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\fBchage\fR
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[\fB-m \fImindays\fR] [\fB-M \fImaxdays\fR]
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[\fB-d \fIlastday\fR] [\fB-I \fIinactive\fR]
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.br
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[\fB-E \fIexpiredate\fR] [\fB-W \fIwarndays\fR] \fIuser\fR
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.TP 6
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\fBchage\fR
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\fB-l \fIuser\fR
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.SH DESCRIPTION
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\fBchage\fR changes the number of days between password changes and the date
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of the last password change. This information is used by the system to
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determine when a user must change her password.
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.PP
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The \fBchage\fR command is restricted to the root user, except for the
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\fB-l\fR option, which may be used by an unprivileged user to determine
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when her password or account is due to expire.
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The options which apply to the \fBchage\fR command are:
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.IP "\fB-d\fR \fIlastday\fR"
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Set the number of days since January 1st, 1970 when the password was last
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changed. The date may also be expressed in the format YYYY-MM-DD (or the
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format more commonly used in your area).
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.IP "\fB-E\fR \fIexpiredate\fR"
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Set the date on which the user's account will no longer be accessible. The
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\fIexpiredate\fR option is the number of days since January 1, 1970 on which
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the accounted is locked. The date may also be expressed in the format
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YYYY-MM-DD (or the format more commonly used in your area). A user whose
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account is locked must contact the system administrator before being able to
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use the system again.
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.IP "\fB-I\fR \fIinactive\fR"
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Set the number of days of inactivity after a password has expired before the
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account is locked. The \fIinactive\fR option is the number of days of
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inactivity. A value of 0 disables this feature. A user whose account is
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locked must contact the system administrator before being able to use the
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system again.
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.IP "\fB-m\fR \fImindays\fR"
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Set the minimum number of days between password changes. A value of zero for
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this field indicates that the user may change her password at any time.
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.IP "\fB-M\fR \fImaxdays\fR"
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Set maximum number of days during which a password is valid. When
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\fImaxdays\fR plus fIlastday\fR is less than the current day, the user will
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be required to change her password before being able to use her account.
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This occurance can be planned for in advance by use of the \fB-W\fR option,
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which provides the user with advance warning.
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.IP "\fB-W\fR \fIwarndays\fR"
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Set the number of days of warning before a password change is required. The
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\fIwarndays\fR option is the number of days prior to the password expiring
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that a user will be warned her password is about to expire.
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.PP
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If none of the options are selected, \fBchage\fR operates in an interactive
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fashion, prompting the user with the current values for all of the fields.
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Enter the new value to change the field, or leave the line blank to use the
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current value. The current value is displayed between a pair of \fB[ ]\fR
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marks.
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.SH NOTE
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The \fBchage\fR program requires shadow password file to be available.
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Its functionality is not available when passwords are stored in the
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passwd file.
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.SH FILES
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\fI/etc/passwd\fR \ - user account information
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.br
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\fI/etc/shadow\fR \ - shadow user account information
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.SH SEE ALSO
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.BR passwd (5),
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.BR shadow (5)
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.SH AUTHOR
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Julianne Frances Haugh <jockgrrl@ix.netcom.com>
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