[7152faa] | 1 | <?xml version="1.0" encoding="UTF-8"?>
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[f896e21c] | 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../general.ent">
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| 5 | %general-entities;
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| 6 | ]>
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| 7 |
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[35a5259] | 8 | <sect1 id="ch-system-systemd" role="wrap" revision="systemd">
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[cba2d4e] | 9 | <?dbhtml filename="systemd.html"?>
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[f896e21c] | 10 |
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| 11 | <sect1info condition="script">
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[cba2d4e] | 12 | <productname>systemd</productname>
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[f896e21c] | 13 | <productnumber>&systemd-version;</productnumber>
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| 14 | <address>&systemd-url;</address>
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| 15 | </sect1info>
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| 16 |
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[cba2d4e] | 17 | <title>Systemd-&systemd-version;</title>
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[f896e21c] | 18 |
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[cba2d4e] | 19 | <indexterm zone="ch-system-systemd">
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[1118b17] | 20 | <primary sortas="a-systemd">systemd</primary>
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[f896e21c] | 21 | </indexterm>
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| 22 |
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| 23 | <sect2 role="package">
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| 24 | <title/>
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| 25 |
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[1118b17] | 26 | <para>The systemd package contains programs for controlling the startup,
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[cba2d4e] | 27 | running, and shutdown of the system.</para>
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[f896e21c] | 28 |
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| 29 | <segmentedlist>
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| 30 | <segtitle>&buildtime;</segtitle>
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| 31 | <segtitle>&diskspace;</segtitle>
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| 32 |
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| 33 | <seglistitem>
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[fb386e0] | 34 | <seg>&systemd-fin-sbu;</seg>
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| 35 | <seg>&systemd-fin-du;</seg>
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[f896e21c] | 36 | </seglistitem>
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| 37 | </segmentedlist>
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| 38 | </sect2>
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| 39 |
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| 40 | <sect2 role="installation">
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[1118b17] | 41 | <title>Installation of systemd</title>
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[70dcd88] | 42 |
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[87119fd] | 43 | <para>Remove two unneeded groups,
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| 44 | <systemitem class="groupname">render</systemitem> and
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| 45 | <systemitem class="groupname">sgx</systemitem>, from the default udev
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[896e77e] | 46 | rules:</para>
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| 47 |
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[1f201845] | 48 | <screen><userinput remap="pre">sed -i -e 's/GROUP="render"/GROUP="video"/' \
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[96fa6f2] | 49 | -e 's/GROUP="sgx", //' rules.d/50-udev-default.rules.in</userinput></screen>
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[6acfe2e] | 50 |
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[1118b17] | 51 | <para>Prepare systemd for compilation:</para>
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| 52 |
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[c556e59] | 53 | <screen><userinput remap="configure">mkdir -p build
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[04b2165] | 54 | cd build
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[fc199db] | 55 |
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[e91edad] | 56 | meson setup .. \
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| 57 | --prefix=/usr \
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| 58 | --buildtype=release \
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| 59 | -D default-dnssec=no \
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| 60 | -D firstboot=false \
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| 61 | -D install-tests=false \
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| 62 | -D ldconfig=false \
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| 63 | -D sysusers=false \
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| 64 | -D rpmmacrosdir=no \
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| 65 | -D homed=disabled \
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| 66 | -D userdb=false \
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| 67 | -D man=disabled \
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| 68 | -D mode=release \
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| 69 | -D pamconfdir=no \
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| 70 | -D dev-kvm-mode=0660 \
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| 71 | -D nobody-group=nogroup \
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| 72 | -D sysupdate=disabled \
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| 73 | -D ukify=disabled \
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| 74 | -D docdir=/usr/share/doc/systemd-&systemd-version;</userinput></screen>
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[cba2d4e] | 75 |
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| 76 | <variablelist>
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[81ed05f] | 77 | <title>The meaning of the meson options:</title>
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[cba2d4e] | 78 |
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[06cdaed] | 79 | <varlistentry>
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| 80 | <term><parameter>--buildtype=release</parameter></term>
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| 81 | <listitem>
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| 82 | <para>This switch overrides the default buildtype
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[69854d2a] | 83 | (<quote>debug</quote>), which produces unoptimized
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[06cdaed] | 84 | binaries.</para>
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| 85 | </listitem>
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| 86 | </varlistentry>
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| 87 |
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[cba2d4e] | 88 | <varlistentry>
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[e91edad] | 89 | <term><parameter>-D default-dnssec=no</parameter></term>
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[cba2d4e] | 90 | <listitem>
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[81ed05f] | 91 | <para>This switch turns off the experimental DNSSEC support.</para>
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[cba2d4e] | 92 | </listitem>
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| 93 | </varlistentry>
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| 94 |
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| 95 | <varlistentry>
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[e91edad] | 96 | <term><parameter>-D firstboot=false</parameter></term>
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[cba2d4e] | 97 | <listitem>
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[81ed05f] | 98 | <para>This switch prevents installation of systemd
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| 99 | services responsible for setting up the system for
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[69854d2a] | 100 | the first time. These are not useful in LFS, because
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[81ed05f] | 101 | everything is done manually.</para>
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[cba2d4e] | 102 | </listitem>
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| 103 | </varlistentry>
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| 104 |
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[e88a471b] | 105 | <varlistentry>
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[e91edad] | 106 | <term><parameter>-D install-tests=false</parameter></term>
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[e88a471b] | 107 | <listitem>
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| 108 | <para>This switch prevents installation of the compiled tests.</para>
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| 109 | </listitem>
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| 110 | </varlistentry>
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| 111 |
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[cba2d4e] | 112 | <varlistentry>
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[e91edad] | 113 | <term><parameter>-D ldconfig=false</parameter></term>
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[cba2d4e] | 114 | <listitem>
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[0d84af1] | 115 | <para>This switch prevents installation of a systemd unit that runs
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[69854d2a] | 116 | <command>ldconfig</command> at boot; this is not useful for source
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| 117 | distributions such as LFS, and makes the boot time longer. Remove
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| 118 | this option to enable running <command>ldconfig</command> at boot.</para>
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[cba2d4e] | 119 | </listitem>
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| 120 | </varlistentry>
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| 121 |
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[1118b17] | 122 | <varlistentry>
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[e91edad] | 123 | <term><parameter>-D sysusers=false</parameter></term>
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[1118b17] | 124 | <listitem>
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| 125 | <para>This switch prevents installation of systemd
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| 126 | services responsible for setting up the
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| 127 | <filename>/etc/group</filename> and
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| 128 | <filename>/etc/passwd</filename> files. Both files
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[f09dd59] | 129 | were created in the previous chapter. This daemon is not useful
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[0a75d62] | 130 | on an LFS system since user accounts are manually created.</para>
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[cba2d4e] | 131 | </listitem>
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| 132 | </varlistentry>
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| 133 |
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[c556e59] | 134 | <varlistentry>
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[e91edad] | 135 | <term><parameter>-D rpmmacrosdir=no</parameter></term>
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[c556e59] | 136 | <listitem>
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| 137 | <para>This switch disables installation of RPM Macros
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[69854d2a] | 138 | for use with systemd, because LFS does not support RPM.</para>
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[c556e59] | 139 | </listitem>
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| 140 | </varlistentry>
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[c06f49a] | 141 |
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| 142 | <varlistentry>
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[e91edad] | 143 | <term><parameter>-D homed=disabled</parameter> and
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| 144 | <parameter>-D userdb=false</parameter></term>
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[c06f49a] | 145 | <listitem>
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[69854d2a] | 146 | <para>Remove two daemons with dependencies that do not fit
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| 147 | within the scope of LFS.</para>
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[c06f49a] | 148 | </listitem>
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| 149 | </varlistentry>
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| 150 |
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[35e0479] | 151 | <varlistentry>
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[e91edad] | 152 | <term><parameter>-D man=disabled</parameter></term>
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[35e0479] | 153 | <listitem>
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| 154 | <para>Prevent the generation of man pages to avoid extra
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| 155 | dependencies. We will install pre-generated man pages for systemd
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[69854d2a] | 156 | from a tarball.</para>
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[35e0479] | 157 | </listitem>
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| 158 | </varlistentry>
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| 159 |
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[fe42b2f] | 160 | <varlistentry>
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[e91edad] | 161 | <term><parameter>-D mode=release</parameter></term>
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[fe42b2f] | 162 | <listitem>
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| 163 | <para>Disable some features considered experimental by upstream.
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| 164 | </para>
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| 165 | </listitem>
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| 166 | </varlistentry>
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| 167 |
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[77e340bc] | 168 | <varlistentry>
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[e91edad] | 169 | <term><parameter>-D pamconfdir=no</parameter></term>
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[77e340bc] | 170 | <listitem>
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| 171 | <para>Prevent the installation of a PAM configuration file not
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| 172 | functional on LFS.</para>
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| 173 | </listitem>
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| 174 | </varlistentry>
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[dfde664] | 175 |
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| 176 | <varlistentry>
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[e91edad] | 177 | <term><parameter>-D dev-kvm-mode=0660</parameter></term>
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[dfde664] | 178 | <listitem>
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| 179 | <para>The default udev rule would allow all users to access
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| 180 | <filename class='devicefile'>/dev/kvm</filename>. The editors
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| 181 | consider it dangerous. This option overrides it.</para>
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| 182 | </listitem>
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[3864d23] | 183 | </varlistentry>
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| 184 |
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| 185 | <varlistentry>
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[e91edad] | 186 | <term><parameter>-D nobody-group=nogroup</parameter></term>
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[3864d23] | 187 | <listitem>
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[ffecb9e] | 188 | <para>Tell the package the group name with GID 65534 is
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| 189 | <systemitem class='groupname'>nogroup</systemitem>.</para>
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[3864d23] | 190 | </listitem>
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[dfde664] | 191 | </varlistentry>
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[9afac64] | 192 |
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[73805590] | 193 | <varlistentry>
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[e91edad] | 194 | <term><parameter>-D sysupdate=disabled</parameter></term>
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[73805590] | 195 | <listitem>
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| 196 | <para>Do not install the <command>systemd-sysupdate</command>
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| 197 | tool. It's designed for automatically upgrading binary distros,
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| 198 | so it's useless for a basic Linux system built from source.
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| 199 | And it will report errors on boot if it's enabled but not properly
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| 200 | configured.</para>
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| 201 | </listitem>
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| 202 | </varlistentry>
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| 203 |
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[9afac64] | 204 | <varlistentry>
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[e91edad] | 205 | <term><parameter>-D ukify=disabled</parameter></term>
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[9afac64] | 206 | <listitem>
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| 207 | <para>Do not install the <command>systemd-ukify</command> script.
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| 208 | At runtime this script requires the
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| 209 | <application>pefile</application> Python module that neither LFS
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| 210 | nor BLFS provides.</para>
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| 211 | </listitem>
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| 212 | </varlistentry>
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| 213 |
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[cba2d4e] | 214 | </variablelist>
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| 215 |
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| 216 | <para>Compile the package:</para>
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| 217 |
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[69c4524] | 218 | <screen><userinput remap="make">ninja</userinput></screen>
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[f896e21c] | 219 |
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[1e7341fd] | 220 | <para>Some tests need a basic <filename>/etc/os-release</filename> file.
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| 221 | To test the results, issue:</para>
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| 222 |
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| 223 | <screen><userinput remap="test">echo 'NAME="Linux From Scratch"' > /etc/os-release
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| 224 | ninja test</userinput></screen>
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| 225 |
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[c04d98d] | 226 | <!-- test-namespace needs /run/systemd/inaccessible/sock, which only exists
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[1e7341fd] | 227 | after initializing the system with systemd. -->
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[c04d98d] | 228 | <para>Three tests: <literal>systemd:core / test-namespace</literal>,
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[e91edad] | 229 | <literal>test-loopback</literal>, and
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| 230 | <literal>test-copy</literal>,
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[c04d98d] | 231 | are known to fail in the LFS chroot environment. Some other tests may
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| 232 | fail because they depend on various kernel configuration options.</para>
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[1e7341fd] | 233 |
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[f896e21c] | 234 | <para>Install the package:</para>
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| 235 |
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[69c4524] | 236 | <screen><userinput remap="install">ninja install</userinput></screen>
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[cba2d4e] | 237 |
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[35e0479] | 238 | <para>Install the man pages:</para>
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[c556e59] | 239 |
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[b4008bb] | 240 | <!-- Please make sure systemd man pages tarball has a common leading
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| 241 | component in the path. -->
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[e91edad] | 242 | <screen><userinput remap="install">tar -xf ../../systemd-man-pages-&systemd-man-version;.tar.xz \
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[57f1678] | 243 | --no-same-owner --strip-components=1 \
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| 244 | -C /usr/share/man</userinput></screen>
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[c556e59] | 245 |
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[cba2d4e] | 246 | <para>Create the <filename>/etc/machine-id</filename> file needed by
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[1118b17] | 247 | <command>systemd-journald</command>:</para>
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[053b206] | 248 |
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[15f0f21] | 249 | <screen><userinput remap="adjust">systemd-machine-id-setup</userinput></screen>
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[cba2d4e] | 250 |
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[69854d2a] | 251 | <para>Set up the basic target structure:</para>
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[8a0d39ee] | 252 |
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| 253 | <screen><userinput remap="adjust">systemctl preset-all</userinput></screen>
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[777b5cb] | 254 |
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[a815ec7] | 255 | <!-- dev: 50-pid-max.conf is not removed in BLFS, so I commented the following out.
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| 256 | If it causes any trouble, we can add this back and also copy it into BLFS -->
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| 257 | <!--
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[777b5cb] | 258 | <para>Prevent systemd from resetting the maximum PID value which causes
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| 259 | some problems with packages and units in BLFS:</para>
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[d672ab7] | 260 |
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[c06f49a] | 261 | <screen><userinput remap="adjust">rm -f /usr/lib/sysctl.d/50-pid-max.conf</userinput></screen>
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[a815ec7] | 262 | -->
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[777b5cb] | 263 |
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[f896e21c] | 264 | </sect2>
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| 265 |
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[cba2d4e] | 266 | <sect2 id="contents-systemd" role="content">
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[1118b17] | 267 | <title>Contents of systemd</title>
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[f896e21c] | 268 |
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| 269 | <segmentedlist>
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| 270 | <segtitle>Installed programs</segtitle>
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| 271 | <segtitle>Installed libraries</segtitle>
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| 272 | <segtitle>Installed directories</segtitle>
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| 273 |
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| 274 | <seglistitem>
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[662f649] | 275 | <seg>busctl, coredumpctl, halt (symlink to systemctl),
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[78cc3be] | 276 | hostnamectl, init, journalctl, kernel-install, localectl, loginctl,
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[c2ccad1] | 277 | machinectl, mount.ddi (symlink to systemd-dissect), networkctl,
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| 278 | oomctl, portablectl, poweroff (symlink to
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[78cc3be] | 279 | systemctl), reboot (symlink to systemctl), resolvconf (symlink to
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| 280 | resolvectl), resolvectl, runlevel (symlink to systemctl), shutdown
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[2efe1e8] | 281 | (symlink to systemctl), systemctl, systemd-ac-power, systemd-analyze,
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[1118b17] | 282 | systemd-ask-password, systemd-cat, systemd-cgls, systemd-cgtop,
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[c2ccad1] | 283 | systemd-confext (symlink to systemd-sysext), systemd-creds,
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| 284 | systemd-delta, systemd-detect-virt,
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[d7a9421] | 285 | systemd-dissect, systemd-escape, systemd-hwdb, systemd-id128,
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| 286 | systemd-inhibit, systemd-machine-id-setup,
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[78cc3be] | 287 | systemd-mount, systemd-notify, systemd-nspawn, systemd-path,
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[c06f49a] | 288 | systemd-repart, systemd-resolve (symlink to resolvectl), systemd-run,
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[d7a9421] | 289 | systemd-socket-activate, systemd-stdio-bridge, systemd-sysext,
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| 290 | systemd-tmpfiles, systemd-tty-ask-password-agent,
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| 291 | systemd-umount (symlink to systemd-mount),
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| 292 | telinit (symlink to systemctl), timedatectl, and udevadm</seg>
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[1118b17] | 293 | <seg>libnss_myhostname.so.2, libnss_mymachines.so.2,
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[78cc3be] | 294 | libnss_resolve.so.2, libnss_systemd.so.2,
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[d7a9421] | 295 | libsystemd.so, libsystemd-shared-&systemd-version;.so (in /usr/lib/systemd),
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[a840e59] | 296 | and libudev.so</seg>
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[59d90df] | 297 | <seg>/etc/binfmt.d, /etc/init.d, /etc/kernel, /etc/modules-load.d,
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[cba2d4e] | 298 | /etc/sysctl.d, /etc/systemd, /etc/tmpfiles.d, /etc/udev,
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[d7a9421] | 299 | /etc/xdg/systemd, /usr/lib/systemd, /usr/lib/udev, /usr/include/systemd,
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[d672ab7] | 300 | /usr/lib/binfmt.d, /usr/lib/environment.d, /usr/lib/kernel,
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| 301 | /usr/lib/modules-load.d, /usr/lib/sysctl.d, /usr/lib/systemd,
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[2ca70d33] | 302 | /usr/lib/tmpfiles.d,
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[1118b17] | 303 | /usr/share/doc/systemd-&systemd-version;, /usr/share/factory,
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| 304 | /usr/share/systemd, /var/lib/systemd, and /var/log/journal</seg>
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[f896e21c] | 305 | </seglistitem>
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| 306 | </segmentedlist>
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| 307 |
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| 308 | <variablelist>
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| 309 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 310 | <?dbfo list-presentation="list"?>
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| 311 | <?dbhtml list-presentation="table"?>
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| 312 |
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[cba2d4e] | 313 | <varlistentry id="busctl">
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| 314 | <term><command>busctl</command></term>
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| 315 | <listitem>
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[9e7475a] | 316 | <para>Is used to introspect and monitor the D-Bus bus</para>
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[cba2d4e] | 317 | <indexterm zone="ch-system-systemd busctl">
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| 318 | <primary sortas="b-busctl">busctl</primary>
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| 319 | </indexterm>
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| 320 | </listitem>
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| 321 | </varlistentry>
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| 322 |
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[1118b17] | 323 | <varlistentry id="coredumpctl">
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| 324 | <term><command>coredumpctl</command></term>
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| 325 | <listitem>
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[9e7475a] | 326 | <para>Is used to retrieve coredumps from the systemd journal</para>
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[1118b17] | 327 | <indexterm zone="ch-system-systemd coredumpctl">
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| 328 | <primary sortas="b-coredumpctl">coredumpctl</primary>
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| 329 | </indexterm>
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| 330 | </listitem>
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| 331 | </varlistentry>
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| 332 |
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[cba2d4e] | 333 | <varlistentry id="halt">
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| 334 | <term><command>halt</command></term>
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| 335 | <listitem>
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| 336 | <para>Normally invokes <command>shutdown</command> with the
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| 337 | <parameter>-h</parameter> option, except when already in run-level 0,
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[69854d2a] | 338 | when it tells the kernel to halt the system; it notes in the
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[cba2d4e] | 339 | file <filename>/var/log/wtmp</filename> that the system is being
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[1118b17] | 340 | brought down</para>
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[cba2d4e] | 341 | <indexterm zone="ch-system-systemd halt">
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| 342 | <primary sortas="b-halt">halt</primary>
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| 343 | </indexterm>
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| 344 | </listitem>
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| 345 | </varlistentry>
|
---|
| 346 |
|
---|
| 347 | <varlistentry id="hostnamectl">
|
---|
| 348 | <term><command>hostnamectl</command></term>
|
---|
| 349 | <listitem>
|
---|
[9e7475a] | 350 | <para>Is used to query and change the system hostname and related
|
---|
[1118b17] | 351 | settings</para>
|
---|
[cba2d4e] | 352 | <indexterm zone="ch-system-systemd hostnamectl">
|
---|
| 353 | <primary sortas="b-hostnamectl">hostnamectl</primary>
|
---|
| 354 | </indexterm>
|
---|
| 355 | </listitem>
|
---|
| 356 | </varlistentry>
|
---|
| 357 |
|
---|
| 358 | <varlistentry id="init">
|
---|
| 359 | <term><command>init</command></term>
|
---|
| 360 | <listitem>
|
---|
[69854d2a] | 361 | <para>Is the first process to be started after the kernel has initialized
|
---|
| 362 | the hardware; <command>init</command> takes over the boot process and starts the
|
---|
| 363 | processes specified by its configuration files; in this case, it starts
|
---|
[8d35535] | 364 | systemd</para>
|
---|
[cba2d4e] | 365 | <indexterm zone="ch-system-systemd init">
|
---|
| 366 | <primary sortas="b-init">init</primary>
|
---|
| 367 | </indexterm>
|
---|
| 368 | </listitem>
|
---|
| 369 | </varlistentry>
|
---|
| 370 |
|
---|
| 371 | <varlistentry id="journalctl">
|
---|
| 372 | <term><command>journalctl</command></term>
|
---|
| 373 | <listitem>
|
---|
[9e7475a] | 374 | <para>Is used to query the contents of the systemd journal</para>
|
---|
[cba2d4e] | 375 | <indexterm zone="ch-system-systemd journalctl">
|
---|
| 376 | <primary sortas="b-journalctl">journalctl</primary>
|
---|
| 377 | </indexterm>
|
---|
| 378 | </listitem>
|
---|
| 379 | </varlistentry>
|
---|
| 380 |
|
---|
| 381 | <varlistentry id="kernel-install">
|
---|
| 382 | <term><command>kernel-install</command></term>
|
---|
| 383 | <listitem>
|
---|
[9e7475a] | 384 | <para>Is used to add and remove kernel and initramfs images to and
|
---|
[69854d2a] | 385 | from /boot; in LFS, this is done manually</para>
|
---|
[cba2d4e] | 386 | <indexterm zone="ch-system-systemd kernel-install">
|
---|
| 387 | <primary sortas="b-kernel-install">kernel-install</primary>
|
---|
| 388 | </indexterm>
|
---|
| 389 | </listitem>
|
---|
| 390 | </varlistentry>
|
---|
| 391 |
|
---|
| 392 | <varlistentry id="localectl">
|
---|
| 393 | <term><command>localectl</command></term>
|
---|
| 394 | <listitem>
|
---|
[9e7475a] | 395 | <para>Is used to query and change the system locale and keyboard layout
|
---|
[1118b17] | 396 | settings</para>
|
---|
[cba2d4e] | 397 | <indexterm zone="ch-system-systemd localectl">
|
---|
| 398 | <primary sortas="b-localectl">localectl</primary>
|
---|
| 399 | </indexterm>
|
---|
| 400 | </listitem>
|
---|
| 401 | </varlistentry>
|
---|
| 402 |
|
---|
| 403 | <varlistentry id="loginctl">
|
---|
| 404 | <term><command>loginctl</command></term>
|
---|
| 405 | <listitem>
|
---|
[9e7475a] | 406 | <para>Is used to introspect and control the state of the systemd Login
|
---|
[1118b17] | 407 | Manager</para>
|
---|
[cba2d4e] | 408 | <indexterm zone="ch-system-systemd loginctl">
|
---|
| 409 | <primary sortas="b-loginctl">loginctl</primary>
|
---|
| 410 | </indexterm>
|
---|
| 411 | </listitem>
|
---|
| 412 | </varlistentry>
|
---|
| 413 |
|
---|
| 414 | <varlistentry id="machinectl">
|
---|
| 415 | <term><command>machinectl</command></term>
|
---|
| 416 | <listitem>
|
---|
[9e7475a] | 417 | <para>Is used to introspect and control the state of the systemd Virtual
|
---|
[cba2d4e] | 418 | Machine and Container Registration Manager</para>
|
---|
| 419 | <indexterm zone="ch-system-systemd machinectl">
|
---|
| 420 | <primary sortas="b-machinectl">machinectl</primary>
|
---|
| 421 | </indexterm>
|
---|
| 422 | </listitem>
|
---|
| 423 | </varlistentry>
|
---|
| 424 |
|
---|
[1118b17] | 425 | <varlistentry id="networkctl">
|
---|
| 426 | <term><command>networkctl</command></term>
|
---|
| 427 | <listitem>
|
---|
[d672ab7] | 428 | <para>Is used to introspect and configure the state of the network
|
---|
[9e7475a] | 429 | links configured by systemd-networkd</para>
|
---|
[1118b17] | 430 | <indexterm zone="ch-system-systemd networkctl">
|
---|
| 431 | <primary sortas="b-networkctl">networkctl</primary>
|
---|
| 432 | </indexterm>
|
---|
| 433 | </listitem>
|
---|
| 434 | </varlistentry>
|
---|
| 435 |
|
---|
[d7a9421] | 436 | <varlistentry id="oomctl">
|
---|
| 437 | <term><command>oomctl</command></term>
|
---|
| 438 | <listitem>
|
---|
| 439 | <para>Controls the systemd Out Of Memory daemon</para>
|
---|
| 440 | <indexterm zone="ch-system-systemd oomctl">
|
---|
| 441 | <primary sortas="b-oomctl">oomctl</primary>
|
---|
| 442 | </indexterm>
|
---|
| 443 | </listitem>
|
---|
| 444 | </varlistentry>
|
---|
| 445 |
|
---|
[78cc3be] | 446 | <varlistentry id="portablectl">
|
---|
| 447 | <term><command>portablectl</command></term>
|
---|
| 448 | <listitem>
|
---|
[9e7475a] | 449 | <para>Is used to attach or detach portable services from the local
|
---|
[78cc3be] | 450 | system</para>
|
---|
| 451 | <indexterm zone="ch-system-systemd portablectl">
|
---|
| 452 | <primary sortas="b-portablectl">portablectl</primary>
|
---|
| 453 | </indexterm>
|
---|
| 454 | </listitem>
|
---|
| 455 | </varlistentry>
|
---|
| 456 |
|
---|
[cba2d4e] | 457 | <varlistentry id="poweroff">
|
---|
| 458 | <term><command>poweroff</command></term>
|
---|
| 459 | <listitem>
|
---|
[9e7475a] | 460 | <para>Instructs the kernel to halt the system and switch off the computer
|
---|
[1118b17] | 461 | (see <command>halt</command>)</para>
|
---|
[cba2d4e] | 462 | <indexterm zone="ch-system-systemd poweroff">
|
---|
| 463 | <primary sortas="b-poweroff">poweroff</primary>
|
---|
| 464 | </indexterm>
|
---|
| 465 | </listitem>
|
---|
| 466 | </varlistentry>
|
---|
| 467 |
|
---|
| 468 | <varlistentry id="reboot">
|
---|
| 469 | <term><command>reboot</command></term>
|
---|
[f896e21c] | 470 | <listitem>
|
---|
[9e7475a] | 471 | <para>Instructs the kernel to reboot the system (see
|
---|
[1118b17] | 472 | <command>halt</command>)</para>
|
---|
[cba2d4e] | 473 | <indexterm zone="ch-system-systemd reboot">
|
---|
| 474 | <primary sortas="b-reboot">reboot</primary>
|
---|
[f896e21c] | 475 | </indexterm>
|
---|
| 476 | </listitem>
|
---|
| 477 | </varlistentry>
|
---|
| 478 |
|
---|
[78cc3be] | 479 | <varlistentry id="resolvconf">
|
---|
| 480 | <term><command>resolvconf</command></term>
|
---|
| 481 | <listitem>
|
---|
[9e7475a] | 482 | <para>Registers DNS server and domain configuration with
|
---|
[93058448] | 483 | <command>systemd-resolved</command></para>
|
---|
[78cc3be] | 484 | <indexterm zone="ch-system-systemd resolvconf">
|
---|
| 485 | <primary sortas="b-resolvconf">resolvconf</primary>
|
---|
| 486 | </indexterm>
|
---|
| 487 | </listitem>
|
---|
| 488 | </varlistentry>
|
---|
| 489 |
|
---|
| 490 | <varlistentry id="resolvectl">
|
---|
| 491 | <term><command>resolvectl</command></term>
|
---|
| 492 | <listitem>
|
---|
[9e7475a] | 493 | <para>Sends control commands to the network name resolution
|
---|
| 494 | manager, or resolves domain names, IPv4 and IPv6 addresses,
|
---|
[8d35535] | 495 | DNS records, and services</para>
|
---|
[78cc3be] | 496 | <indexterm zone="ch-system-systemd resolvectl">
|
---|
| 497 | <primary sortas="b-resolvectl">resolvectl</primary>
|
---|
| 498 | </indexterm>
|
---|
| 499 | </listitem>
|
---|
| 500 | </varlistentry>
|
---|
| 501 |
|
---|
[cba2d4e] | 502 | <varlistentry id="runlevel">
|
---|
| 503 | <term><command>runlevel</command></term>
|
---|
[f896e21c] | 504 | <listitem>
|
---|
[9e7475a] | 505 | <para>Outputs the previous and the current run-level, as noted in the
|
---|
[02776dff] | 506 | last run-level record in <filename>/run/utmp</filename></para>
|
---|
[cba2d4e] | 507 | <indexterm zone="ch-system-systemd runlevel">
|
---|
| 508 | <primary sortas="b-runlevel">runlevel</primary>
|
---|
[f896e21c] | 509 | </indexterm>
|
---|
| 510 | </listitem>
|
---|
| 511 | </varlistentry>
|
---|
| 512 |
|
---|
[cba2d4e] | 513 | <varlistentry id="shutdown">
|
---|
| 514 | <term><command>shutdown</command></term>
|
---|
[f896e21c] | 515 | <listitem>
|
---|
[d672ab7] | 516 | <para>Brings the system down in a safe and secure manner, signaling
|
---|
[9e7475a] | 517 | all processes and notifying all logged-in users</para>
|
---|
[cba2d4e] | 518 | <indexterm zone="ch-system-systemd shutdown">
|
---|
| 519 | <primary sortas="b-shutdown">shutdown</primary>
|
---|
[f896e21c] | 520 | </indexterm>
|
---|
| 521 | </listitem>
|
---|
| 522 | </varlistentry>
|
---|
| 523 |
|
---|
[cba2d4e] | 524 | <varlistentry id="systemctl">
|
---|
| 525 | <term><command>systemctl</command></term>
|
---|
[f896e21c] | 526 | <listitem>
|
---|
[9e7475a] | 527 | <para>Is used to introspect and control the state of the systemd system
|
---|
[1118b17] | 528 | and service manager</para>
|
---|
[cba2d4e] | 529 | <indexterm zone="ch-system-systemd systemctl">
|
---|
| 530 | <primary sortas="b-systemctl">systemctl</primary>
|
---|
| 531 | </indexterm>
|
---|
| 532 | </listitem>
|
---|
| 533 | </varlistentry>
|
---|
| 534 |
|
---|
[2efe1e8] | 535 | <varlistentry id="systemd-ac-power">
|
---|
| 536 | <term><command>systemd-ac-power</command></term>
|
---|
| 537 | <listitem>
|
---|
| 538 | <para>Reports whether the system is connected to an external
|
---|
| 539 | power source.</para>
|
---|
| 540 | <indexterm zone="ch-system-systemd systemd-ac-power">
|
---|
| 541 | <primary sortas="b-systemd-ac-power">systemd-ac-power</primary>
|
---|
| 542 | </indexterm>
|
---|
| 543 | </listitem>
|
---|
| 544 | </varlistentry>
|
---|
| 545 |
|
---|
[cba2d4e] | 546 | <varlistentry id="systemd-analyze">
|
---|
| 547 | <term><command>systemd-analyze</command></term>
|
---|
| 548 | <listitem>
|
---|
[69854d2a] | 549 | <para>Is used to analyze system startup performance,
|
---|
| 550 | as well as identify troublesome systemd units</para>
|
---|
[cba2d4e] | 551 | <indexterm zone="ch-system-systemd systemd-analyze">
|
---|
| 552 | <primary sortas="b-systemd-analyze">systemd-analyze</primary>
|
---|
| 553 | </indexterm>
|
---|
| 554 | </listitem>
|
---|
| 555 | </varlistentry>
|
---|
| 556 |
|
---|
| 557 | <varlistentry id="systemd-ask-password">
|
---|
| 558 | <term><command>systemd-ask-password</command></term>
|
---|
| 559 | <listitem>
|
---|
[9e7475a] | 560 | <para>Is used to query a system password or passphrase from the user,
|
---|
[69854d2a] | 561 | using a message specified on the Linux command line</para>
|
---|
[cba2d4e] | 562 | <indexterm zone="ch-system-systemd systemd-ask-password">
|
---|
| 563 | <primary sortas="b-systemd-ask-password">systemd-ask-password</primary>
|
---|
| 564 | </indexterm>
|
---|
| 565 | </listitem>
|
---|
| 566 | </varlistentry>
|
---|
| 567 |
|
---|
| 568 | <varlistentry id="systemd-cat">
|
---|
| 569 | <term><command>systemd-cat</command></term>
|
---|
| 570 | <listitem>
|
---|
[9e7475a] | 571 | <para>Is used to connect the STDOUT and STDERR outputs of a process
|
---|
[8d35535] | 572 | with the systemd journal
|
---|
[cba2d4e] | 573 | </para>
|
---|
| 574 | <indexterm zone="ch-system-systemd systemd-cat">
|
---|
| 575 | <primary sortas="b-systemd-cat">systemd-cat</primary>
|
---|
| 576 | </indexterm>
|
---|
| 577 | </listitem>
|
---|
| 578 | </varlistentry>
|
---|
| 579 |
|
---|
| 580 | <varlistentry id="systemd-cgls">
|
---|
| 581 | <term><command>systemd-cgls</command></term>
|
---|
| 582 | <listitem>
|
---|
[1118b17] | 583 | <para>Recursively shows the contents of the selected Linux control
|
---|
| 584 | group hierarchy in a tree</para>
|
---|
[cba2d4e] | 585 | <indexterm zone="ch-system-systemd systemd-cgls">
|
---|
| 586 | <primary sortas="b-systemd-cgls">systemd-cgls</primary>
|
---|
| 587 | </indexterm>
|
---|
| 588 | </listitem>
|
---|
| 589 | </varlistentry>
|
---|
| 590 |
|
---|
| 591 | <varlistentry id="systemd-cgtop">
|
---|
| 592 | <term><command>systemd-cgtop</command></term>
|
---|
| 593 | <listitem>
|
---|
[1118b17] | 594 | <para>Shows the top control groups of the local Linux control group
|
---|
[69854d2a] | 595 | hierarchy, ordered by their CPU, memory and disk I/O loads</para>
|
---|
[cba2d4e] | 596 | <indexterm zone="ch-system-systemd systemd-cgtop">
|
---|
| 597 | <primary sortas="b-systemd-cgtop">systemd-cgtop</primary>
|
---|
| 598 | </indexterm>
|
---|
| 599 | </listitem>
|
---|
| 600 | </varlistentry>
|
---|
| 601 |
|
---|
[662f649] | 602 | <varlistentry id="systemd-creds">
|
---|
| 603 | <term><command>systemd-creds</command></term>
|
---|
[d7a9421] | 604 | <listitem>
|
---|
[9f0a642] | 605 | <para>Displays and processes credentials</para>
|
---|
[662f649] | 606 | <indexterm zone="ch-system-systemd systemd-creds">
|
---|
| 607 | <primary sortas="b-systemd-creds">systemd-creds</primary>
|
---|
[d7a9421] | 608 | </indexterm>
|
---|
| 609 | </listitem>
|
---|
| 610 | </varlistentry>
|
---|
| 611 |
|
---|
[cba2d4e] | 612 | <varlistentry id="systemd-delta">
|
---|
| 613 | <term><command>systemd-delta</command></term>
|
---|
| 614 | <listitem>
|
---|
[9e7475a] | 615 | <para>Is used to identify and compare configuration files in
|
---|
[69854d2a] | 616 | <filename class="directory">/etc</filename> that override the defaults
|
---|
| 617 | in <filename class="directory">/usr</filename></para>
|
---|
[cba2d4e] | 618 | <indexterm zone="ch-system-systemd systemd-delta">
|
---|
| 619 | <primary sortas="b-systemd-delta">systemd-delta</primary>
|
---|
| 620 | </indexterm>
|
---|
| 621 | </listitem>
|
---|
| 622 | </varlistentry>
|
---|
| 623 |
|
---|
| 624 | <varlistentry id="systemd-detect-virt">
|
---|
| 625 | <term><command>systemd-detect-virt</command></term>
|
---|
| 626 | <listitem>
|
---|
[9e7475a] | 627 | <para>Detects whether the system is being run in a virtual
|
---|
[8d35535] | 628 | environment, and adjusts udev accordingly</para>
|
---|
[cba2d4e] | 629 | <indexterm zone="ch-system-systemd systemd-detect-virt">
|
---|
| 630 | <primary sortas="b-systemd-detect-virt">systemd-detect-virt</primary>
|
---|
| 631 | </indexterm>
|
---|
| 632 | </listitem>
|
---|
| 633 | </varlistentry>
|
---|
| 634 |
|
---|
[22009fb] | 635 | <varlistentry id="systemd-dissect">
|
---|
| 636 | <term><command>systemd-dissect</command></term>
|
---|
| 637 | <listitem>
|
---|
[8d35535] | 638 | <para>Is used to inspect OS disk images</para>
|
---|
[22009fb] | 639 | <indexterm zone="ch-system-systemd systemd-dissect">
|
---|
| 640 | <primary sortas="b-systemd-dissect">systemd-dissect</primary>
|
---|
| 641 | </indexterm>
|
---|
| 642 | </listitem>
|
---|
| 643 | </varlistentry>
|
---|
| 644 |
|
---|
[1118b17] | 645 | <varlistentry id="systemd-escape">
|
---|
| 646 | <term><command>systemd-escape</command></term>
|
---|
| 647 | <listitem>
|
---|
[9e7475a] | 648 | <para>Is used to escape strings for inclusion in systemd unit
|
---|
[1118b17] | 649 | names</para>
|
---|
| 650 | <indexterm zone="ch-system-systemd systemd-escape">
|
---|
| 651 | <primary sortas="b-systemd-escape">systemd-escape</primary>
|
---|
| 652 | </indexterm>
|
---|
| 653 | </listitem>
|
---|
| 654 | </varlistentry>
|
---|
| 655 |
|
---|
| 656 | <varlistentry id="systemd-hwdb">
|
---|
| 657 | <term><command>systemd-hwdb</command></term>
|
---|
| 658 | <listitem>
|
---|
[9e7475a] | 659 | <para>Is used to manage the hardware database (hwdb)</para>
|
---|
[1118b17] | 660 | <indexterm zone="ch-system-systemd systemd-hwdb">
|
---|
| 661 | <primary sortas="b-systemd-hwdb">systemd-hwdb</primary>
|
---|
| 662 | </indexterm>
|
---|
| 663 | </listitem>
|
---|
| 664 | </varlistentry>
|
---|
| 665 |
|
---|
[78cc3be] | 666 | <varlistentry id="systemd-id128">
|
---|
| 667 | <term><command>systemd-id128</command></term>
|
---|
| 668 | <listitem>
|
---|
[69854d2a] | 669 | <para>Generates and prints id128 (UUID) strings</para>
|
---|
[78cc3be] | 670 | <indexterm zone="ch-system-systemd systemd-id128">
|
---|
| 671 | <primary sortas="b-systemd-id128">systemd-id128</primary>
|
---|
| 672 | </indexterm>
|
---|
| 673 | </listitem>
|
---|
| 674 | </varlistentry>
|
---|
| 675 |
|
---|
[cba2d4e] | 676 | <varlistentry id="systemd-inhibit">
|
---|
| 677 | <term><command>systemd-inhibit</command></term>
|
---|
| 678 | <listitem>
|
---|
[9e7475a] | 679 | <para>Is used to execute a program with a shutdown, sleep or idle
|
---|
| 680 | inhibitor lock taken, preventing an action such as a system shutdown
|
---|
[8d35535] | 681 | until the process is completed</para>
|
---|
[cba2d4e] | 682 | <indexterm zone="ch-system-systemd systemd-inhibit">
|
---|
| 683 | <primary sortas="b-systemd-inhibit">systemd-inhibit</primary>
|
---|
| 684 | </indexterm>
|
---|
| 685 | </listitem>
|
---|
| 686 | </varlistentry>
|
---|
| 687 |
|
---|
| 688 | <varlistentry id="systemd-machine-id-setup">
|
---|
| 689 | <term><command>systemd-machine-id-setup</command></term>
|
---|
| 690 | <listitem>
|
---|
[9e7475a] | 691 | <para>Is used by system installer tools to initialize the machine ID
|
---|
[1118b17] | 692 | stored in <filename>/etc/machine-id</filename> at install time with a
|
---|
| 693 | randomly generated ID</para>
|
---|
[cba2d4e] | 694 | <indexterm zone="ch-system-systemd systemd-machine-id-setup">
|
---|
| 695 | <primary sortas="b-systemd-machine-id-setup">systemd-machine-id-setup</primary>
|
---|
| 696 | </indexterm>
|
---|
| 697 | </listitem>
|
---|
| 698 | </varlistentry>
|
---|
| 699 |
|
---|
[13c8b42] | 700 | <varlistentry id="systemd-mount">
|
---|
| 701 | <term><command>systemd-mount</command></term>
|
---|
| 702 | <listitem>
|
---|
[8d35535] | 703 | <para>Is used to temporarily mount or automount disks</para>
|
---|
[13c8b42] | 704 | <indexterm zone="ch-system-systemd systemd-mount">
|
---|
| 705 | <primary sortas="b-systemd-mount">systemd-mount</primary>
|
---|
| 706 | </indexterm>
|
---|
| 707 | </listitem>
|
---|
| 708 | </varlistentry>
|
---|
| 709 |
|
---|
[cba2d4e] | 710 | <varlistentry id="systemd-notify">
|
---|
| 711 | <term><command>systemd-notify</command></term>
|
---|
| 712 | <listitem>
|
---|
[69854d2a] | 713 | <para>Is used by daemon scripts to notify the init system of status
|
---|
[1118b17] | 714 | changes</para>
|
---|
[cba2d4e] | 715 | <indexterm zone="ch-system-systemd systemd-notify">
|
---|
| 716 | <primary sortas="b-systemd-notify">systemd-notify</primary>
|
---|
| 717 | </indexterm>
|
---|
| 718 | </listitem>
|
---|
| 719 | </varlistentry>
|
---|
| 720 |
|
---|
| 721 | <varlistentry id="systemd-nspawn">
|
---|
| 722 | <term><command>systemd-nspawn</command></term>
|
---|
| 723 | <listitem>
|
---|
[69854d2a] | 724 | <para>Is used to run a command, or an entire OS, in a light-weight namespace
|
---|
[1118b17] | 725 | container</para>
|
---|
[cba2d4e] | 726 | <indexterm zone="ch-system-systemd systemd-nspawn">
|
---|
| 727 | <primary sortas="b-systemd-nspawn">systemd-nspawn</primary>
|
---|
| 728 | </indexterm>
|
---|
| 729 | </listitem>
|
---|
| 730 | </varlistentry>
|
---|
| 731 |
|
---|
[1118b17] | 732 | <varlistentry id="systemd-path">
|
---|
| 733 | <term><command>systemd-path</command></term>
|
---|
| 734 | <listitem>
|
---|
[9e7475a] | 735 | <para>Is used to query system and user paths</para>
|
---|
[1118b17] | 736 | <indexterm zone="ch-system-systemd systemd-path">
|
---|
| 737 | <primary sortas="b-systemd-path">systemd-path</primary>
|
---|
| 738 | </indexterm>
|
---|
| 739 | </listitem>
|
---|
| 740 | </varlistentry>
|
---|
| 741 |
|
---|
[c06f49a] | 742 | <varlistentry id="systemd-repart">
|
---|
| 743 | <term><command>systemd-repart</command></term>
|
---|
| 744 | <listitem>
|
---|
[9e7475a] | 745 | <para>Is used to grow and add partitions to a partition table when
|
---|
[69854d2a] | 746 | systemd is used with an OS image (e.g. a container)</para>
|
---|
[c06f49a] | 747 | <indexterm zone="ch-system-systemd systemd-repart">
|
---|
| 748 | <primary sortas="b-systemd-repart">systemd-repart</primary>
|
---|
| 749 | </indexterm>
|
---|
| 750 | </listitem>
|
---|
| 751 | </varlistentry>
|
---|
| 752 |
|
---|
[1118b17] | 753 | <varlistentry id="systemd-resolve">
|
---|
| 754 | <term><command>systemd-resolve</command></term>
|
---|
| 755 | <listitem>
|
---|
[9e7475a] | 756 | <para>Is used to resolve domain names, IPV4 and IPv6 addresses, DNS
|
---|
[1118b17] | 757 | resource records, and services</para>
|
---|
| 758 | <indexterm zone="ch-system-systemd systemd-resolve">
|
---|
| 759 | <primary sortas="b-systemd-resolve">systemd-resolve</primary>
|
---|
| 760 | </indexterm>
|
---|
| 761 | </listitem>
|
---|
| 762 | </varlistentry>
|
---|
| 763 |
|
---|
[cba2d4e] | 764 | <varlistentry id="systemd-run">
|
---|
| 765 | <term><command>systemd-run</command></term>
|
---|
| 766 | <listitem>
|
---|
[9e7475a] | 767 | <para>Is used to create and start a transient .service or a .scope
|
---|
[69854d2a] | 768 | unit and run the specified command in it; this is useful for
|
---|
[8d35535] | 769 | validating systemd units</para>
|
---|
[cba2d4e] | 770 | <indexterm zone="ch-system-systemd systemd-run">
|
---|
| 771 | <primary sortas="b-systemd-run">systemd-run</primary>
|
---|
| 772 | </indexterm>
|
---|
| 773 | </listitem>
|
---|
| 774 | </varlistentry>
|
---|
| 775 |
|
---|
[13c8b42] | 776 | <varlistentry id="systemd-socket-activate">
|
---|
| 777 | <term><command>systemd-socket-activate</command></term>
|
---|
| 778 | <listitem>
|
---|
[9e7475a] | 779 | <para>Is used to listen on socket devices and launch a process upon
|
---|
[8d35535] | 780 | a successful connection to the socket</para>
|
---|
[13c8b42] | 781 | <indexterm zone="ch-system-systemd systemd-socket-activate">
|
---|
| 782 | <primary sortas="b-systemd-socket-activate">systemd-socket-activate</primary>
|
---|
| 783 | </indexterm>
|
---|
| 784 | </listitem>
|
---|
| 785 | </varlistentry>
|
---|
| 786 |
|
---|
[d7a9421] | 787 | <varlistentry id="systemd-sysext">
|
---|
| 788 | <term><command>systemd-sysext</command></term>
|
---|
| 789 | <listitem>
|
---|
[871fd2f] | 790 | <para>Activates system extension images</para>
|
---|
[d7a9421] | 791 | <indexterm zone="ch-system-systemd systemd-sysext">
|
---|
| 792 | <primary sortas="b-systemd-sysext">systemd-sysext</primary>
|
---|
| 793 | </indexterm>
|
---|
| 794 | </listitem>
|
---|
| 795 | </varlistentry>
|
---|
| 796 |
|
---|
[cba2d4e] | 797 | <varlistentry id="systemd-tmpfiles">
|
---|
| 798 | <term><command>systemd-tmpfiles</command></term>
|
---|
| 799 | <listitem>
|
---|
[69854d2a] | 800 | <para>Creates, deletes, and cleans up volatile and temporary files and
|
---|
[1118b17] | 801 | directories, based on the configuration file format and location
|
---|
| 802 | specified in
|
---|
| 803 | <filename class="directory">tmpfiles.d</filename> directories</para>
|
---|
[cba2d4e] | 804 | <indexterm zone="ch-system-systemd systemd-tmpfiles">
|
---|
| 805 | <primary sortas="b-systemd-tmpfiles">systemd-tmpfiles</primary>
|
---|
| 806 | </indexterm>
|
---|
| 807 | </listitem>
|
---|
| 808 | </varlistentry>
|
---|
| 809 |
|
---|
[78cc3be] | 810 | <varlistentry id="systemd-umount">
|
---|
| 811 | <term><command>systemd-umount</command></term>
|
---|
| 812 | <listitem>
|
---|
[9e7475a] | 813 | <para>Unmounts mount points</para>
|
---|
[78cc3be] | 814 | <indexterm zone="ch-system-systemd systemd-umount">
|
---|
| 815 | <primary sortas="b-systemd-umount">systemd-umount</primary>
|
---|
| 816 | </indexterm>
|
---|
| 817 | </listitem>
|
---|
| 818 | </varlistentry>
|
---|
| 819 |
|
---|
[cba2d4e] | 820 | <varlistentry id="systemd-tty-ask-password-agent">
|
---|
| 821 | <term><command>systemd-tty-ask-password-agent</command></term>
|
---|
| 822 | <listitem>
|
---|
[d672ab7] | 823 | <para>Is used to list and/or process pending systemd password
|
---|
[9e7475a] | 824 | requests</para>
|
---|
[cba2d4e] | 825 | <indexterm zone="ch-system-systemd systemd-tty-ask-password-agent">
|
---|
| 826 | <primary sortas="b-systemd-tty-ask-password-agent">systemd-tty-ask-password-agent</primary>
|
---|
| 827 | </indexterm>
|
---|
| 828 | </listitem>
|
---|
| 829 | </varlistentry>
|
---|
| 830 |
|
---|
| 831 | <varlistentry id="telinit">
|
---|
| 832 | <term><command>telinit</command></term>
|
---|
| 833 | <listitem>
|
---|
[1118b17] | 834 | <para>Tells <command>init</command> which run-level to change
|
---|
| 835 | to</para>
|
---|
[cba2d4e] | 836 | <indexterm zone="ch-system-systemd telinit">
|
---|
| 837 | <primary sortas="b-telinit">telinit</primary>
|
---|
| 838 | </indexterm>
|
---|
| 839 | </listitem>
|
---|
| 840 | </varlistentry>
|
---|
| 841 |
|
---|
| 842 | <varlistentry id="timedatectl">
|
---|
| 843 | <term><command>timedatectl</command></term>
|
---|
| 844 | <listitem>
|
---|
[9e7475a] | 845 | <para>Is used to query and change the system clock and its settings
|
---|
[cba2d4e] | 846 | </para>
|
---|
| 847 | <indexterm zone="ch-system-systemd timedatectl">
|
---|
| 848 | <primary sortas="b-timedatectl">timedatectl</primary>
|
---|
[f896e21c] | 849 | </indexterm>
|
---|
| 850 | </listitem>
|
---|
| 851 | </varlistentry>
|
---|
| 852 |
|
---|
| 853 | <varlistentry id="udevadm">
|
---|
| 854 | <term><command>udevadm</command></term>
|
---|
| 855 | <listitem>
|
---|
[d672ab7] | 856 | <para>Is a generic udev administration tool which controls the udevd
|
---|
[69854d2a] | 857 | daemon, provides info from the udev hardware database, monitors
|
---|
[d672ab7] | 858 | uevents, waits for uevents to finish, tests udev configuration, and
|
---|
[9e7475a] | 859 | triggers uevents for a given device</para>
|
---|
[cba2d4e] | 860 | <indexterm zone="ch-system-systemd udevadm">
|
---|
[f896e21c] | 861 | <primary sortas="b-udevadm">udevadm</primary>
|
---|
| 862 | </indexterm>
|
---|
| 863 | </listitem>
|
---|
| 864 | </varlistentry>
|
---|
| 865 |
|
---|
[cba2d4e] | 866 | <varlistentry id="libsystemd">
|
---|
| 867 | <term><filename class="libraryfile">libsystemd</filename></term>
|
---|
[f896e21c] | 868 | <listitem>
|
---|
[9e7475a] | 869 | <para>Is the main systemd utility library</para>
|
---|
[cba2d4e] | 870 | <indexterm zone="ch-system-systemd libsystemd">
|
---|
| 871 | <primary sortas="c-libsystemd">libsystemd</primary>
|
---|
[f896e21c] | 872 | </indexterm>
|
---|
| 873 | </listitem>
|
---|
| 874 | </varlistentry>
|
---|
| 875 |
|
---|
| 876 | <varlistentry id="libudev">
|
---|
| 877 | <term><filename class="libraryfile">libudev</filename></term>
|
---|
| 878 | <listitem>
|
---|
[9e7475a] | 879 | <para>Is a library to access Udev device information</para>
|
---|
[cba2d4e] | 880 | <indexterm zone="ch-system-systemd libudev">
|
---|
[f896e21c] | 881 | <primary sortas="c-libudev">libudev</primary>
|
---|
| 882 | </indexterm>
|
---|
| 883 | </listitem>
|
---|
| 884 | </varlistentry>
|
---|
| 885 |
|
---|
| 886 | </variablelist>
|
---|
| 887 |
|
---|
| 888 | </sect2>
|
---|
| 889 |
|
---|
| 890 | </sect1>
|
---|