222 lines
7.0 KiB
XML
222 lines
7.0 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<!--
|
|
SPDX-FileCopyrightText: 1992 , Julianne Frances Haugh
|
|
SPDX-FileCopyrightText: 1992 , Phillip Street
|
|
SPDX-FileCopyrightText: 2007 - 2011, Nicolas François
|
|
SPDX-License-Identifier: BSD-3-Clause
|
|
-->
|
|
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook V4.5//EN"
|
|
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
|
|
<!ENTITY LASTLOG_UID_MAX SYSTEM "login.defs.d/LASTLOG_UID_MAX.xml">
|
|
<!-- SHADOW-CONFIG-HERE -->
|
|
]>
|
|
<refentry id='lastlog.8'>
|
|
<!-- $Id$ -->
|
|
<refentryinfo>
|
|
<author>
|
|
<firstname>Julianne Frances</firstname>
|
|
<surname>Haugh</surname>
|
|
<contrib>Creation, 1992</contrib>
|
|
</author>
|
|
<author>
|
|
<firstname>Thomas</firstname>
|
|
<surname>Kłoczko</surname>
|
|
<email>kloczek@pld.org.pl</email>
|
|
<contrib>shadow-utils maintainer, 2000 - 2007</contrib>
|
|
</author>
|
|
<author>
|
|
<firstname>Nicolas</firstname>
|
|
<surname>François</surname>
|
|
<email>nicolas.francois@centraliens.net</email>
|
|
<contrib>shadow-utils maintainer, 2007 - now</contrib>
|
|
</author>
|
|
</refentryinfo>
|
|
<refmeta>
|
|
<refentrytitle>lastlog</refentrytitle>
|
|
<manvolnum>8</manvolnum>
|
|
<refmiscinfo class="sectdesc">System Management Commands</refmiscinfo>
|
|
<refmiscinfo class="source">shadow-utils</refmiscinfo>
|
|
<refmiscinfo class="version">&SHADOW_UTILS_VERSION;</refmiscinfo>
|
|
</refmeta>
|
|
<refnamediv id='name'>
|
|
<refname>lastlog</refname>
|
|
<refpurpose>reports the most recent login of all users or of a given user</refpurpose>
|
|
</refnamediv>
|
|
<!-- body begins here -->
|
|
<refsynopsisdiv id='synopsis'>
|
|
<cmdsynopsis>
|
|
<command>lastlog</command>
|
|
<arg choice='opt'>
|
|
<replaceable>options</replaceable>
|
|
</arg>
|
|
</cmdsynopsis>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1 id='description'>
|
|
<title>DESCRIPTION</title>
|
|
<para>
|
|
<command>lastlog</command> formats and prints the contents of the last
|
|
login log <filename>/var/log/lastlog</filename> file. The
|
|
<emphasis>login-name</emphasis>, <emphasis>port</emphasis>, and
|
|
<emphasis>last login time</emphasis> will be printed. The default (no
|
|
flags) causes lastlog entries to be printed, sorted by their order in
|
|
<filename>/etc/passwd</filename>.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1 id='options'>
|
|
<title>OPTIONS</title>
|
|
<para>
|
|
The options which apply to the <command>lastlog</command> command are:
|
|
</para>
|
|
<variablelist remap='IP'>
|
|
<varlistentry>
|
|
<term>
|
|
<option>-b</option>, <option>--before</option> <replaceable>DAYS</replaceable>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Print only lastlog records older than <replaceable>DAYS</replaceable>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term>
|
|
<option>-C</option>, <option>--clear</option>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Clear lastlog record of a user. This option can be used only together
|
|
with <option>-u</option> (<option>--user</option>)).
|
|
</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>-R</option>, <option>--root</option> <replaceable>CHROOT_DIR</replaceable>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Apply changes in the <replaceable>CHROOT_DIR</replaceable>
|
|
directory and use the configuration files from the
|
|
<replaceable>CHROOT_DIR</replaceable> directory.
|
|
Only absolute paths are supported.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term>
|
|
<option>-S</option>, <option>--set</option>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Set lastlog record of a user to the current time. This option can be
|
|
used only together with <option>-u</option> (<option>--user</option>)).
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term>
|
|
<option>-t</option>, <option>--time</option> <replaceable>DAYS</replaceable>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Print the lastlog records more recent than
|
|
<replaceable>DAYS</replaceable>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term>
|
|
<option>-u</option>, <option>--user</option> <replaceable>LOGIN</replaceable>|<replaceable>RANGE</replaceable>
|
|
</term>
|
|
<listitem>
|
|
<para>
|
|
Print the lastlog record of the specified user(s).
|
|
</para>
|
|
<para>
|
|
The users can be specified by a login name, a numerical user ID,
|
|
or a <replaceable>RANGE</replaceable> of users. This
|
|
<replaceable>RANGE</replaceable> of users can be specified with a
|
|
min and max values (<replaceable>UID_MIN-UID_MAX</replaceable>), a
|
|
max value (<replaceable>-UID_MAX</replaceable>), or a min value
|
|
(<replaceable>UID_MIN-</replaceable>).
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
|
|
<para>
|
|
If the user has never logged in the message <emphasis>** Never logged
|
|
in**</emphasis> will be displayed instead of the port and time.
|
|
</para>
|
|
|
|
<para>
|
|
Only the entries for the current users of the system will be
|
|
displayed. Other entries may exist for users that were deleted
|
|
previously.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1 id='note'>
|
|
<title>NOTE</title>
|
|
<para>
|
|
The <filename>lastlog</filename> file is a database which contains info
|
|
on the last login of each user. You should not rotate it. It is a sparse
|
|
file, so its size on the disk is usually much smaller than the one shown
|
|
by "<command>ls -l</command>" (which can indicate a really big file if
|
|
you have in <filename>passwd</filename> users with a high UID). You can
|
|
display its real size with "<command>ls -s</command>".
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1 id='configuration'>
|
|
<title>CONFIGURATION</title>
|
|
<para>
|
|
The following configuration variables in
|
|
<filename>/etc/login.defs</filename> change the behavior of this
|
|
tool:
|
|
</para>
|
|
<variablelist>
|
|
&LASTLOG_UID_MAX;
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1 id='files'>
|
|
<title>FILES</title>
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><filename>/var/log/lastlog</filename></term>
|
|
<listitem>
|
|
<para>Database times of previous user logins.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1 id='caveats'>
|
|
<title>CAVEATS</title>
|
|
<para>
|
|
Large gaps in UID numbers will cause the lastlog program to run
|
|
longer with no output to the screen (i.e. if in lastlog database there
|
|
is no entries for users with UID between 170 and 800 lastlog will appear
|
|
to hang as it processes entries with UIDs 171-799).
|
|
</para>
|
|
<para>
|
|
Having high UIDs can create problems when handling the <term><filename>
|
|
/var/log/lastlog</filename></term> with external tools. Although the
|
|
actual file is sparse and does not use too much space, certain
|
|
applications are not designed to identify sparse files by default and may
|
|
require a specific option to handle them.
|
|
</para>
|
|
</refsect1>
|
|
</refentry>
|