247 lines
7.7 KiB
XML
247 lines
7.7 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY ENCRYPT_METHOD SYSTEM "login.defs.d/ENCRYPT_METHOD.xml">
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<!ENTITY GID_MAX SYSTEM "login.defs.d/GID_MAX.xml">
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<!ENTITY MAX_MEMBERS_PER_GROUP SYSTEM "login.defs.d/MAX_MEMBERS_PER_GROUP.xml">
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<!ENTITY MD5_CRYPT_ENAB SYSTEM "login.defs.d/MD5_CRYPT_ENAB.xml">
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<!ENTITY PASS_MAX_DAYS SYSTEM "login.defs.d/PASS_MAX_DAYS.xml">
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<!ENTITY PASS_MIN_DAYS SYSTEM "login.defs.d/PASS_MIN_DAYS.xml">
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<!ENTITY PASS_WARN_AGE SYSTEM "login.defs.d/PASS_WARN_AGE.xml">
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<!ENTITY SHA_CRYPT_MIN_ROUNDS SYSTEM "login.defs.d/SHA_CRYPT_MIN_ROUNDS.xml">
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<!ENTITY SYS_GID_MAX SYSTEM "login.defs.d/SYS_GID_MAX.xml">
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<!ENTITY SYS_UID_MAX SYSTEM "login.defs.d/SYS_UID_MAX.xml">
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<!ENTITY UID_MAX SYSTEM "login.defs.d/UID_MAX.xml">
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<!ENTITY UMASK SYSTEM "login.defs.d/UMASK.xml">
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]>
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<refentry id='newusers.8'>
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<!-- $Id$ -->
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<refmeta>
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<refentrytitle>newusers</refentrytitle>
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<manvolnum>8</manvolnum>
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<refmiscinfo class="sectdesc">System Management Commands</refmiscinfo>
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</refmeta>
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<refnamediv id='name'>
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<refname>newusers</refname>
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<refpurpose>update and create new users in batch</refpurpose>
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</refnamediv>
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<!-- body begins here -->
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<refsynopsisdiv id='synopsis'>
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<cmdsynopsis>
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<command>newusers</command>
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<arg choice='opt'>
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<replaceable>new_users</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>
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The <command>newusers</command> command reads a file of user name and
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clear-text password pairs and uses this information to update a group
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of existing users or to create new users. Each line is in the same format
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as the standard password file (see
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<citerefentry><refentrytitle>passwd</refentrytitle><manvolnum>5</manvolnum>
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</citerefentry>) with the following exceptions:
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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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<emphasis remap='I'>pw_passwd</emphasis>
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</term>
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<listitem>
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<para>
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This field will be encrypted and used as the new value of the
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encrypted password.
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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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<emphasis remap='I'>pw_gid</emphasis>
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</term>
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<listitem>
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<para>
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This field must contain the name (or number) of a group. The user
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will be added as a member to this group. When a non-existent
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group name or number is specified, a new group will be created.
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In the case of a non-existent group number, both the name and the
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number of the new group will be this number.
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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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<emphasis remap='I'>pw_dir</emphasis>
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</term>
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<listitem>
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<para>
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This field will be checked for existence as a directory, and a
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new directory with this name will be created if it does not
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already exist. The ownership of the directory will be set to be
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that of the user being created or updated.
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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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This command is intended to be used in a large system environment
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where many accounts are updated at a single time.
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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>The options which apply to the <command>newusers</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><option>-c</option>, <option>--crypt-method</option></term>
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<listitem>
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<para>Use the specified method to encrypt the passwords.</para>
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<para>
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The available methods are DES, MD5, NONE, and SHA256 or SHA512
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if your libc support these methods.
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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>-r</option>, <option>--system</option>
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</term>
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<listitem>
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<para>
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Create a system account.
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</para>
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<para>
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System users will be created with no aging information in
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<filename>/etc/shadow</filename>, and their numeric
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identifiers are choosen in the
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<option>SYS_UID_MIN</option>-<option>SYS_UID_MAX</option>
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range, defined in <filename>login.defs</filename>, instead of
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<option>UID_MIN</option>-<option>UID_MAX</option> (and their
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<option>GID</option> counterparts for the creation of groups).
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</para>
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</listitem>
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</varlistentry>
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<varlistentry condition="sha_crypt">
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<term><option>-s</option>, <option>--sha-rounds</option></term>
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<listitem>
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<para>
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Use the specified number of rounds to encrypt the passwords.
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</para>
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<para>
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The value 0 means that the system will choose the default
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number of rounds for the crypt method (5000).
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</para>
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<para>
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A minimal value of 1000 and a maximal value of 999,999,999
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will be enforced.
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</para>
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<para>
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You can only use this option with the SHA256 or SHA512
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crypt method.
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</para>
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<para>
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By default, the number of rounds is defined by the
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SHA_CRYPT_MIN_ROUNDS and SHA_CRYPT_MAX_ROUNDS variables in
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<filename>/etc/login.defs</filename>.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 id='caveats'>
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<title>CAVEATS</title>
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<para>
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The input file must be protected since it contains unencrypted
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passwords.
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</para>
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<para>
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PAM is not used to update the passwords.
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Only <filename>/etc/passwd</filename> and
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<filename>/etc/shadow</filename> are updated, and the various checks
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or options provided by PAM modules are not used.
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</para>
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</refsect1>
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<refsect1 id='configuration'>
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<title>CONFIGURATION</title>
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<para>
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The following configuration variables in
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<filename>/etc/login.defs</filename> change the behavior of this
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tool:
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</para>
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<variablelist>
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&ENCRYPT_METHOD;
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&GID_MAX; <!-- documents also GID_MIN -->
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&MAX_MEMBERS_PER_GROUP;
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&MD5_CRYPT_ENAB;
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&PASS_MAX_DAYS;
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&PASS_MIN_DAYS;
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&PASS_WARN_AGE;
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&SHA_CRYPT_MIN_ROUNDS; <!-- documents also SHA_CRYPT_MAX_ROUNDS-->
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&SYS_GID_MAX; <!-- documents also SYS_GID_MIN -->
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&SYS_UID_MAX; <!-- documents also SYS_UID_MIN -->
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&UID_MAX; <!-- documents also UID_MIN -->
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&UMASK;
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</variablelist>
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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><filename>/etc/passwd</filename></term>
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<listitem>
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<para>User account information.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>/etc/shadow</filename></term>
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<listitem>
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<para>Secure user account information.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>/etc/group</filename></term>
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<listitem>
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<para>Group account information.</para>
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</listitem>
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</varlistentry>
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<varlistentry condition="gshadow">
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<term><filename>/etc/gshadow</filename></term>
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<listitem>
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<para>Secure group account information.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>/etc/login.defs</filename></term>
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<listitem>
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<para>Shadow password suite configuration.</para>
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</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>login.defs</refentrytitle><manvolnum>5</manvolnum>
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</citerefentry>,
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<citerefentry>
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<refentrytitle>passwd</refentrytitle><manvolnum>1</manvolnum>
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</citerefentry>,
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<citerefentry>
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<refentrytitle>useradd</refentrytitle><manvolnum>8</manvolnum>
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</citerefentry>.
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</para>
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</refsect1>
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</refentry>
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