194 lines
7.1 KiB
XML
194 lines
7.1 KiB
XML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd">
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<refentry id='chage.1'>
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<!-- $Id: chage.1.xml,v 1.7 2005/04/26 12:31:14 kloczek Exp $ -->
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<refmeta>
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<refentrytitle>chage</refentrytitle>
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<manvolnum>1</manvolnum>
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<refmiscinfo class="sectdesc">User Commands</refmiscinfo>
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</refmeta>
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<refnamediv id='name'>
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<refname>chage</refname>
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<refpurpose>change user password expiry information</refpurpose>
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</refnamediv>
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<refsynopsisdiv id='synopsis'>
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<cmdsynopsis>
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<command>chage</command>
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<arg choice='opt'>-m <replaceable>mindays</replaceable></arg>
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<arg choice='opt'>-M <replaceable>maxdays</replaceable></arg>
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<arg choice='opt'>-d <replaceable>lastday</replaceable></arg>
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<arg choice='opt'>-I <replaceable>inactive</replaceable></arg>
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<sbr/>
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<arg choice='opt'>-E <replaceable>expiredate</replaceable></arg>
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<arg choice='opt'>-W <replaceable>warndays</replaceable></arg>
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<arg choice='plain'><replaceable>user</replaceable></arg>
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</cmdsynopsis>
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<cmdsynopsis>
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<command>chage</command>
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<arg choice='plain'>-l <replaceable>user</replaceable>
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</arg>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1 id='description'>
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<title>DESCRIPTION</title>
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<para><command>chage</command> command changes the number of days
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between passwordchanges and the date of the last password change.
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This information is used by the system to determine when a user must
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change her password.
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</para>
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<para>The <command>chage</command> command is restricted to the root
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user, except for the <option>-l</option> option, which may be used by
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an unprivileged user to determine when her password or account is due
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to expire.
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</para>
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</refsect1>
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<refsect1 id='options'>
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<title>OPTIONS</title>
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<para>
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The options which apply to the <command>chage</command> command are:
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</para>
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<variablelist remap='IP'>
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<varlistentry>
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<term>
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<option>-d</option> <replaceable>lastday</replaceable>
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</term>
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<listitem>
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<para>
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Set the number of days since January 1st, 1970 when the password
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was last changed. 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).
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<option>-E</option> <replaceable>expiredate</replaceable>
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</term>
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<listitem>
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<para>Set the date on which the user's account will no longer be
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accessible. The <emphasis remap='I'>expiredate</emphasis> option
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is the number of days since January 1, 1970 on which the
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accounted is locked. The date may also be expressed in the
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format YYYY-MM-DD (or the format more commonly used in your
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area). A user whose account is locked must contact the system
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administrator before being able to use the system again. Passing
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the number <emphasis remap='I'>-1</emphasis> as the <emphasis
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remap='I'>expiredate</emphasis> will remove an accounts
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expiration date.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<option>-I</option> <replaceable>inactive</replaceable>
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</term>
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<listitem>
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<para>
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Set the number of days of inactivity after a password has
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expired before the account is locked. The <emphasis
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remap='I'>inactive</emphasis> option is the number of days of
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inactivity. A value of 0 disables this feature. A user whose
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account is locked must contact the system administrator before
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being able to use the system again.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<option>-m</option> <replaceable>mindays</replaceable>
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</term>
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<listitem>
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<para>
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Set the minimum number of days between password changes. A value
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of zero for this field indicates that the user may change her
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password at any time.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<option>-M</option> <replaceable>maxdays</replaceable>
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</term>
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<listitem>
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<para>
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Set maximum number of days during which a password is valid.
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When <emphasis remap='I'>maxdays</emphasis> plus <emphasis
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remap='I'>lastday</emphasis> is less than the current day, the
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user will be required to change her password before being able
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to use her account. This occurrence can be planned for in
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advance by use of the <option>-W</option> option, which provides
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the user with advance warning.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<option>-W</option> <replaceable>warndays</replaceable>
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</term>
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<listitem>
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<para>
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Set the number of days of warning before a password change is
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required. The <emphasis remap='I'>warndays</emphasis> option is
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the number of days prior to the password expiring that a user
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will be warned her password is about to expire.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>
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If none of the options are selected, <command>chage</command> operates
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in an interactive fashion, prompting the user with the current values
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for all of the fields. Enter the new value to change the field, or
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leave the line blank to use the current value. The current value is
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displayed between a pair of <emphasis remap='B'>[ ]</emphasis> marks.
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</para>
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</refsect1>
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<refsect1 id='note'>
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<title>NOTE</title>
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<para>
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The <command>chage</command> program requires shadow password file to
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be available. Its functionality is not available when passwords are
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stored in the passwd file.
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</para>
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</refsect1>
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<refsect1 id='files'>
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<title>FILES</title>
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<variablelist>
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<varlistentry>
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<term>
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<filename>/etc/passwd</filename>
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</term>
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<listitem>user account information</listitem>
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</varlistentry>
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<varlistentry>
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<term>
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<filename>/etc/shadow</filename>
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</term>
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<listitem>secure user account information</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 id='see_also'>
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<title>SEE ALSO</title>
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<para>
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<citerefentry>
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<refentrytitle>passwd</refentrytitle><manvolnum>5</manvolnum>
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</citerefentry>,
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<citerefentry>
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<refentrytitle>shadow</refentrytitle><manvolnum>5</manvolnum>
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</citerefentry>.
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</para>
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</refsect1>
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<refsect1 id='author'>
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<title>AUTHOR</title>
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<para>Julianne Frances Haugh <jockgrrl@ix.netcom.com></para>
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</refsect1>
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</refentry>
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