mirror of
https://github.com/shadow-maint/shadow.git
synced 2024-11-28 04:23:56 +08:00
106 lines
3.0 KiB
XML
106 lines
3.0 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<refentry id='chpasswd.8'>
|
|
<!-- $Id$ -->
|
|
<refmeta>
|
|
<refentrytitle>chpasswd</refentrytitle>
|
|
<manvolnum>8</manvolnum>
|
|
<refmiscinfo class="sectdesc">System Management Commands</refmiscinfo>
|
|
</refmeta>
|
|
<refnamediv id='name'>
|
|
<refname>chpasswd</refname>
|
|
<refpurpose>update passwords in batch mode</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv id='synopsis'>
|
|
<cmdsynopsis>
|
|
<command>chpasswd</command>
|
|
<arg choice='opt'>
|
|
<replaceable>options</replaceable>
|
|
</arg>
|
|
</cmdsynopsis>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1 id='description'>
|
|
<title>DESCRIPTION</title>
|
|
<para>
|
|
The <command>chpasswd</command> command reads a list of user name and
|
|
password pairs from standard input and uses this information to update
|
|
a group of existing users. Each line is of the format:
|
|
</para>
|
|
<para>
|
|
<emphasis remap='I'>user_name</emphasis>:<emphasis
|
|
remap='I'>password</emphasis>
|
|
</para>
|
|
<para>
|
|
By default the supplied password must be in clear-text. Default
|
|
encryption algorithm is DES. Also the password age will be updated, if
|
|
present.
|
|
</para>
|
|
<para>
|
|
This command is intended to be used in a large system environment
|
|
where many accounts are created at a single time.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1 id='options'>
|
|
<title>OPTIONS</title>
|
|
<para>
|
|
The options which apply to the <command>chpasswd</command> command
|
|
are:
|
|
</para>
|
|
<variablelist remap='IP'>
|
|
<varlistentry>
|
|
<term><option>-e</option>, <option>--encrypted</option></term>
|
|
<listitem>
|
|
<para>Supplied passwords are in encrypted form.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><option>-h</option>, <option>--help</option></term>
|
|
<listitem>
|
|
<para>Display help message and exit.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><option>-m</option>, <option>--md5</option></term>
|
|
<listitem>
|
|
<para>
|
|
Use MD5 encryption instead of DES when the supplied passwords are
|
|
not encrypted.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1 id='caveats'>
|
|
<title>CAVEATS</title>
|
|
<para>
|
|
Remember to set permissions or umask to prevent readability of
|
|
unencrypted files by other users.
|
|
</para>
|
|
<para>
|
|
<command>chpasswd</command> does not use PAM to update the passwords.
|
|
Thus, It only updates the passwords from the
|
|
<filename>/etc/passwd</filename> and <filename>/etc/shadow</filename>
|
|
databases, and does not support the various checks provided by PAM
|
|
modules.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1 id='see_also'>
|
|
<title>SEE ALSO</title>
|
|
<para>
|
|
<citerefentry>
|
|
<refentrytitle>passwd</refentrytitle><manvolnum>1</manvolnum>
|
|
</citerefentry>,
|
|
<citerefentry>
|
|
<refentrytitle>newusers</refentrytitle><manvolnum>8</manvolnum>
|
|
</citerefentry>,
|
|
<citerefentry>
|
|
<refentrytitle>useradd</refentrytitle><manvolnum>8</manvolnum>
|
|
</citerefentry>.
|
|
</para>
|
|
</refsect1>
|
|
</refentry>
|