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1<?xml version="1.0"?>
2<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
12b42c76 3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd">
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5<!--
6 SPDX-License-Identifier: LGPL-2.1+
7
8 This file is part of systemd.
9
10 Copyright 2016 Lennart Poettering
11
12 systemd is free software; you can redistribute it and/or modify it
13 under the terms of the GNU Lesser General Public License as published by
14 the Free Software Foundation; either version 2.1 of the License, or
15 (at your option) any later version.
16
17 systemd is distributed in the hope that it will be useful, but
18 WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 Lesser General Public License for more details.
21
22 You should have received a copy of the GNU Lesser General Public License
23 along with systemd; If not, see <http://www.gnu.org/licenses/>.
24-->
25
21ac6ff1 26<refsect1>
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27 <title>Environment</title>
28
29 <variablelist class='environment-variables'>
30 <varlistentry id='pager'>
31 <term><varname>$SYSTEMD_PAGER</varname></term>
32
33 <listitem><para>Pager to use when <option>--no-pager</option> is not given; overrides
34 <varname>$PAGER</varname>. If neither <varname>$SYSTEMD_PAGER</varname> nor <varname>$PAGER</varname> are set, a
35 set of well-known pager implementations are tried in turn, including
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36 <citerefentry project='man-pages'><refentrytitle>less</refentrytitle><manvolnum>1</manvolnum></citerefentry> and
37 <citerefentry project='man-pages'><refentrytitle>more</refentrytitle><manvolnum>1</manvolnum></citerefentry>, until one is found. If
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38 no pager implementation is discovered no pager is invoked. Setting this environment variable to an empty string
39 or the value <literal>cat</literal> is equivalent to passing <option>--no-pager</option>.</para></listitem>
40 </varlistentry>
41
42 <varlistentry id='less'>
43 <term><varname>$SYSTEMD_LESS</varname></term>
44
45 <listitem><para>Override the options passed to <command>less</command> (by default
46 <literal>FRSXMK</literal>).</para></listitem>
47 </varlistentry>
48
49 <varlistentry id='lesscharset'>
50 <term><varname>$SYSTEMD_LESSCHARSET</varname></term>
51
52 <listitem><para>Override the charset passed to <command>less</command> (by default <literal>utf-8</literal>, if
53 the invoking terminal is determined to be UTF-8 compatible).</para></listitem>
54 </varlistentry>
55
56 </variablelist>
21ac6ff1 57</refsect1>