[f896e21c] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 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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[c8df034] | 43 | <para>First, apply a patch to fix a security vulnerability and regressions
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| 44 | with hostnames and idle units:</para>
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[22009fb] | 45 |
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[d7a9421] | 46 | <screen><userinput remap="pre">patch -Np1 -i ../systemd-&systemd-version;-upstream_fixes-1.patch</userinput></screen>
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[b55310e] | 47 |
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[87119fd] | 48 | <para>Remove two unneeded groups,
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| 49 | <systemitem class="groupname">render</systemitem> and
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| 50 | <systemitem class="groupname">sgx</systemitem>, from the default udev
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[896e77e] | 51 | rules:</para>
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| 52 |
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[1f201845] | 53 | <screen><userinput remap="pre">sed -i -e 's/GROUP="render"/GROUP="video"/' \
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[96fa6f2] | 54 | -e 's/GROUP="sgx", //' rules.d/50-udev-default.rules.in</userinput></screen>
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[896e77e] | 55 |
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[1118b17] | 56 | <para>Prepare systemd for compilation:</para>
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| 57 |
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[c556e59] | 58 | <screen><userinput remap="configure">mkdir -p build
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[04b2165] | 59 | cd build
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[fc199db] | 60 |
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[0f703541] | 61 | meson --prefix=/usr \
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| 62 | --sysconfdir=/etc \
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| 63 | --localstatedir=/var \
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[06cdaed] | 64 | --buildtype=release \
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[0f703541] | 65 | -Dblkid=true \
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| 66 | -Ddefault-dnssec=no \
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| 67 | -Dfirstboot=false \
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| 68 | -Dinstall-tests=false \
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| 69 | -Dldconfig=false \
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| 70 | -Dsysusers=false \
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| 71 | -Db_lto=false \
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| 72 | -Drpmmacrosdir=no \
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| 73 | -Dhomed=false \
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| 74 | -Duserdb=false \
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[35e0479] | 75 | -Dman=false \
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[22009fb] | 76 | -Dmode=release \
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[1446892] | 77 | -Ddocdir=/usr/share/doc/systemd-&systemd-version; \
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[fc199db] | 78 | ..</userinput></screen>
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[cba2d4e] | 79 |
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| 80 | <variablelist>
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[81ed05f] | 81 | <title>The meaning of the meson options:</title>
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[cba2d4e] | 82 |
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[06cdaed] | 83 | <varlistentry>
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| 84 | <term><parameter>--buildtype=release</parameter></term>
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| 85 | <listitem>
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| 86 | <para>This switch overrides the default buildtype
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| 87 | (<quote>debug</quote>), which would produce unoptimized
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| 88 | binaries.</para>
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| 89 | </listitem>
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| 90 | </varlistentry>
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| 91 |
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[cba2d4e] | 92 | <varlistentry>
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[81ed05f] | 93 | <term><parameter>-Ddefault-dnssec=no</parameter></term>
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[cba2d4e] | 94 | <listitem>
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[81ed05f] | 95 | <para>This switch turns off the experimental DNSSEC support.</para>
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[cba2d4e] | 96 | </listitem>
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| 97 | </varlistentry>
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| 98 |
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| 99 | <varlistentry>
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[81ed05f] | 100 | <term><parameter>-Dfirstboot=false</parameter></term>
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[cba2d4e] | 101 | <listitem>
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[81ed05f] | 102 | <para>This switch prevents installation of systemd
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| 103 | services responsible for setting up the system for
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| 104 | the first time. They are not useful for LFS because
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| 105 | everything is done manually.</para>
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[cba2d4e] | 106 | </listitem>
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| 107 | </varlistentry>
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| 108 |
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[e88a471b] | 109 | <varlistentry>
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| 110 | <term><parameter>-Dinstall-tests=false</parameter></term>
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| 111 | <listitem>
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| 112 | <para>This switch prevents installation of the compiled tests.</para>
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| 113 | </listitem>
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| 114 | </varlistentry>
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| 115 |
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[cba2d4e] | 116 | <varlistentry>
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[0d84af1] | 117 | <term><parameter>-Dldconfig=false</parameter></term>
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[cba2d4e] | 118 | <listitem>
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[0d84af1] | 119 | <para>This switch prevents installation of a systemd unit that runs
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| 120 | <command>ldconfig</command> at boot, which is not useful for source
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| 121 | distributions such as LFS and makes the boot time longer. Remove it
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| 122 | if the described feature is desired.</para>
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[cba2d4e] | 123 | </listitem>
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| 124 | </varlistentry>
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| 125 |
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[1118b17] | 126 | <varlistentry>
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[81ed05f] | 127 | <term><parameter>-Dsysusers=false</parameter></term>
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[1118b17] | 128 | <listitem>
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| 129 | <para>This switch prevents installation of systemd
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| 130 | services responsible for setting up the
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| 131 | <filename>/etc/group</filename> and
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| 132 | <filename>/etc/passwd</filename> files. Both files
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[f09dd59] | 133 | were created in the previous chapter. This daemon is not useful
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[0a75d62] | 134 | on an LFS system since user accounts are manually created.</para>
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[cba2d4e] | 135 | </listitem>
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| 136 | </varlistentry>
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| 137 |
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[c556e59] | 138 | <varlistentry>
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| 139 | <term><parameter>-Drpmmacrosdir=no</parameter></term>
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| 140 | <listitem>
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| 141 | <para>This switch disables installation of RPM Macros
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| 142 | for use with systemd because LFS does not support RPM.</para>
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| 143 | </listitem>
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| 144 | </varlistentry>
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[c06f49a] | 145 |
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| 146 | <varlistentry>
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| 147 | <term><parameter>-D{userdb,homed}=false</parameter></term>
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| 148 | <listitem>
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| 149 | <para>Remove two daemons that have dependencies that do not fit
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| 150 | the scope of LFS.</para>
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| 151 | </listitem>
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| 152 | </varlistentry>
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| 153 |
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[35e0479] | 154 | <varlistentry>
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| 155 | <term><parameter>-Dman=false</parameter></term>
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| 156 | <listitem>
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| 157 | <para>Prevent the generation of man pages to avoid extra
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| 158 | dependencies. We will install pre-generated man pages for systemd
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| 159 | from a tarball later.</para>
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| 160 | </listitem>
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| 161 | </varlistentry>
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| 162 |
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[fe42b2f] | 163 | <varlistentry>
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| 164 | <term><parameter>-Dmode=release</parameter></term>
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| 165 | <listitem>
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| 166 | <para>Disable some features considered experimental by upstream.
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| 167 | </para>
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| 168 | </listitem>
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| 169 | </varlistentry>
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| 170 |
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[cba2d4e] | 171 | </variablelist>
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| 172 |
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| 173 | <para>Compile the package:</para>
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| 174 |
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[69c4524] | 175 | <screen><userinput remap="make">ninja</userinput></screen>
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[f896e21c] | 176 |
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| 177 | <para>Install the package:</para>
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| 178 |
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[69c4524] | 179 | <screen><userinput remap="install">ninja install</userinput></screen>
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[cba2d4e] | 180 |
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[35e0479] | 181 | <para>Install the man pages:</para>
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[c556e59] | 182 |
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[9eac91e] | 183 | <screen><userinput remap="install">tar -xf ../../systemd-man-pages-&systemd-man-version;.tar.xz -C /usr/share/man</userinput></screen>
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[c556e59] | 184 |
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[4f8ae861] | 185 | <para>Remove a useless directory:</para>
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[a815ec7] | 186 |
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| 187 | <screen><userinput remap="install">rm -rf /usr/lib/pam.d</userinput></screen>
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| 188 |
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[cba2d4e] | 189 | <para>Create the <filename>/etc/machine-id</filename> file needed by
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[1118b17] | 190 | <command>systemd-journald</command>:</para>
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[053b206] | 191 |
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[15f0f21] | 192 | <screen><userinput remap="adjust">systemd-machine-id-setup</userinput></screen>
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[cba2d4e] | 193 |
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[8a0d39ee] | 194 | <para>Setup the basic target structure:</para>
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| 195 |
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| 196 | <screen><userinput remap="adjust">systemctl preset-all</userinput></screen>
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[777b5cb] | 197 |
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[a815ec7] | 198 | <!-- dev: 50-pid-max.conf is not removed in BLFS, so I commented the following out.
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| 199 | If it causes any trouble, we can add this back and also copy it into BLFS -->
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| 200 | <!--
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[777b5cb] | 201 | <para>Prevent systemd from resetting the maximum PID value which causes
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| 202 | some problems with packages and units in BLFS:</para>
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[d672ab7] | 203 |
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[c06f49a] | 204 | <screen><userinput remap="adjust">rm -f /usr/lib/sysctl.d/50-pid-max.conf</userinput></screen>
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[a815ec7] | 205 | -->
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[777b5cb] | 206 |
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[f896e21c] | 207 | </sect2>
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| 208 |
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[cba2d4e] | 209 | <sect2 id="contents-systemd" role="content">
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[1118b17] | 210 | <title>Contents of systemd</title>
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[f896e21c] | 211 |
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| 212 | <segmentedlist>
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| 213 | <segtitle>Installed programs</segtitle>
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| 214 | <segtitle>Installed libraries</segtitle>
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| 215 | <segtitle>Installed directories</segtitle>
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| 216 |
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| 217 | <seglistitem>
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[662f649] | 218 | <seg>busctl, coredumpctl, halt (symlink to systemctl),
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[78cc3be] | 219 | hostnamectl, init, journalctl, kernel-install, localectl, loginctl,
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[d7a9421] | 220 | machinectl, networkctl, oomctl, portablectl, poweroff (symlink to
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[78cc3be] | 221 | systemctl), reboot (symlink to systemctl), resolvconf (symlink to
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| 222 | resolvectl), resolvectl, runlevel (symlink to systemctl), shutdown
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| 223 | (symlink to systemctl), systemctl, systemd-analyze,
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[1118b17] | 224 | systemd-ask-password, systemd-cat, systemd-cgls, systemd-cgtop,
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[662f649] | 225 | systemd-creds, systemd-delta, systemd-detect-virt,
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[d7a9421] | 226 | systemd-dissect, systemd-escape, systemd-hwdb, systemd-id128,
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| 227 | systemd-inhibit, systemd-machine-id-setup,
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[78cc3be] | 228 | systemd-mount, systemd-notify, systemd-nspawn, systemd-path,
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[c06f49a] | 229 | systemd-repart, systemd-resolve (symlink to resolvectl), systemd-run,
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[d7a9421] | 230 | systemd-socket-activate, systemd-stdio-bridge, systemd-sysext,
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| 231 | systemd-tmpfiles, systemd-tty-ask-password-agent,
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| 232 | systemd-umount (symlink to systemd-mount),
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| 233 | telinit (symlink to systemctl), timedatectl, and udevadm</seg>
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[1118b17] | 234 | <seg>libnss_myhostname.so.2, libnss_mymachines.so.2,
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[78cc3be] | 235 | libnss_resolve.so.2, libnss_systemd.so.2,
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[d7a9421] | 236 | libsystemd.so, libsystemd-shared-&systemd-version;.so (in /usr/lib/systemd),
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[a840e59] | 237 | and libudev.so</seg>
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[cba2d4e] | 238 | <seg>/etc/binfmt.d, /etc/init.d, /etc/kernel, /etc/modules-load.d,
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| 239 | /etc/sysctl.d, /etc/systemd, /etc/tmpfiles.d, /etc/udev,
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[d7a9421] | 240 | /etc/xdg/systemd, /usr/lib/systemd, /usr/lib/udev, /usr/include/systemd,
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[d672ab7] | 241 | /usr/lib/binfmt.d, /usr/lib/environment.d, /usr/lib/kernel,
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| 242 | /usr/lib/modules-load.d, /usr/lib/sysctl.d, /usr/lib/systemd,
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[2ca70d33] | 243 | /usr/lib/tmpfiles.d,
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[1118b17] | 244 | /usr/share/doc/systemd-&systemd-version;, /usr/share/factory,
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| 245 | /usr/share/systemd, /var/lib/systemd, and /var/log/journal</seg>
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[f896e21c] | 246 | </seglistitem>
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| 247 | </segmentedlist>
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| 248 |
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| 249 | <variablelist>
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| 250 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 251 | <?dbfo list-presentation="list"?>
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| 252 | <?dbhtml list-presentation="table"?>
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| 253 |
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[cba2d4e] | 254 | <varlistentry id="busctl">
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| 255 | <term><command>busctl</command></term>
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| 256 | <listitem>
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[9e7475a] | 257 | <para>Is used to introspect and monitor the D-Bus bus</para>
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[cba2d4e] | 258 | <indexterm zone="ch-system-systemd busctl">
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| 259 | <primary sortas="b-busctl">busctl</primary>
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| 260 | </indexterm>
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| 261 | </listitem>
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| 262 | </varlistentry>
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| 263 |
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[1118b17] | 264 | <varlistentry id="coredumpctl">
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| 265 | <term><command>coredumpctl</command></term>
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| 266 | <listitem>
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[9e7475a] | 267 | <para>Is used to retrieve coredumps from the systemd journal</para>
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[1118b17] | 268 | <indexterm zone="ch-system-systemd coredumpctl">
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| 269 | <primary sortas="b-coredumpctl">coredumpctl</primary>
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| 270 | </indexterm>
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| 271 | </listitem>
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| 272 | </varlistentry>
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| 273 |
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[cba2d4e] | 274 | <varlistentry id="halt">
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| 275 | <term><command>halt</command></term>
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| 276 | <listitem>
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| 277 | <para>Normally invokes <command>shutdown</command> with the
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| 278 | <parameter>-h</parameter> option, except when already in run-level 0,
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| 279 | then it tells the kernel to halt the system; it notes in the
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| 280 | file <filename>/var/log/wtmp</filename> that the system is being
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[1118b17] | 281 | brought down</para>
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[cba2d4e] | 282 | <indexterm zone="ch-system-systemd halt">
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| 283 | <primary sortas="b-halt">halt</primary>
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| 284 | </indexterm>
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| 285 | </listitem>
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| 286 | </varlistentry>
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| 287 |
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| 288 | <varlistentry id="hostnamectl">
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| 289 | <term><command>hostnamectl</command></term>
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| 290 | <listitem>
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[9e7475a] | 291 | <para>Is used to query and change the system hostname and related
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[1118b17] | 292 | settings</para>
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[cba2d4e] | 293 | <indexterm zone="ch-system-systemd hostnamectl">
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| 294 | <primary sortas="b-hostnamectl">hostnamectl</primary>
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| 295 | </indexterm>
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| 296 | </listitem>
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| 297 | </varlistentry>
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| 298 |
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| 299 | <varlistentry id="init">
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| 300 | <term><command>init</command></term>
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| 301 | <listitem>
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[9e7475a] | 302 | <para>Is the first process to be started when the kernel has initialized
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[d672ab7] | 303 | the hardware which takes over the boot process and starts all
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[9e7475a] | 304 | processes according to its configuration files. In this case, it starts
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[8d35535] | 305 | systemd</para>
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[cba2d4e] | 306 | <indexterm zone="ch-system-systemd init">
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| 307 | <primary sortas="b-init">init</primary>
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| 308 | </indexterm>
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| 309 | </listitem>
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| 310 | </varlistentry>
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| 311 |
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| 312 | <varlistentry id="journalctl">
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| 313 | <term><command>journalctl</command></term>
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| 314 | <listitem>
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[9e7475a] | 315 | <para>Is used to query the contents of the systemd journal</para>
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[cba2d4e] | 316 | <indexterm zone="ch-system-systemd journalctl">
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| 317 | <primary sortas="b-journalctl">journalctl</primary>
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| 318 | </indexterm>
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| 319 | </listitem>
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| 320 | </varlistentry>
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| 321 |
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| 322 | <varlistentry id="kernel-install">
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| 323 | <term><command>kernel-install</command></term>
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| 324 | <listitem>
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[9e7475a] | 325 | <para>Is used to add and remove kernel and initramfs images to and
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[8d35535] | 326 | from /boot. In LFS, this is done manually</para>
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[cba2d4e] | 327 | <indexterm zone="ch-system-systemd kernel-install">
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| 328 | <primary sortas="b-kernel-install">kernel-install</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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| 333 | <varlistentry id="localectl">
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| 334 | <term><command>localectl</command></term>
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| 335 | <listitem>
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[9e7475a] | 336 | <para>Is used to query and change the system locale and keyboard layout
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[1118b17] | 337 | settings</para>
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[cba2d4e] | 338 | <indexterm zone="ch-system-systemd localectl">
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| 339 | <primary sortas="b-localectl">localectl</primary>
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| 340 | </indexterm>
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| 341 | </listitem>
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| 342 | </varlistentry>
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| 343 |
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| 344 | <varlistentry id="loginctl">
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| 345 | <term><command>loginctl</command></term>
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| 346 | <listitem>
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[9e7475a] | 347 | <para>Is used to introspect and control the state of the systemd Login
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[1118b17] | 348 | Manager</para>
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[cba2d4e] | 349 | <indexterm zone="ch-system-systemd loginctl">
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| 350 | <primary sortas="b-loginctl">loginctl</primary>
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| 351 | </indexterm>
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| 352 | </listitem>
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| 353 | </varlistentry>
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| 354 |
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| 355 | <varlistentry id="machinectl">
|
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| 356 | <term><command>machinectl</command></term>
|
---|
| 357 | <listitem>
|
---|
[9e7475a] | 358 | <para>Is used to introspect and control the state of the systemd Virtual
|
---|
[cba2d4e] | 359 | Machine and Container Registration Manager</para>
|
---|
| 360 | <indexterm zone="ch-system-systemd machinectl">
|
---|
| 361 | <primary sortas="b-machinectl">machinectl</primary>
|
---|
| 362 | </indexterm>
|
---|
| 363 | </listitem>
|
---|
| 364 | </varlistentry>
|
---|
| 365 |
|
---|
[1118b17] | 366 | <varlistentry id="networkctl">
|
---|
| 367 | <term><command>networkctl</command></term>
|
---|
| 368 | <listitem>
|
---|
[d672ab7] | 369 | <para>Is used to introspect and configure the state of the network
|
---|
[9e7475a] | 370 | links configured by systemd-networkd</para>
|
---|
[1118b17] | 371 | <indexterm zone="ch-system-systemd networkctl">
|
---|
| 372 | <primary sortas="b-networkctl">networkctl</primary>
|
---|
| 373 | </indexterm>
|
---|
| 374 | </listitem>
|
---|
| 375 | </varlistentry>
|
---|
| 376 |
|
---|
[d7a9421] | 377 | <varlistentry id="oomctl">
|
---|
| 378 | <term><command>oomctl</command></term>
|
---|
| 379 | <listitem>
|
---|
| 380 | <para>Controls the systemd Out Of Memory daemon</para>
|
---|
| 381 | <indexterm zone="ch-system-systemd oomctl">
|
---|
| 382 | <primary sortas="b-oomctl">oomctl</primary>
|
---|
| 383 | </indexterm>
|
---|
| 384 | </listitem>
|
---|
| 385 | </varlistentry>
|
---|
| 386 |
|
---|
[78cc3be] | 387 | <varlistentry id="portablectl">
|
---|
| 388 | <term><command>portablectl</command></term>
|
---|
| 389 | <listitem>
|
---|
[9e7475a] | 390 | <para>Is used to attach or detach portable services from the local
|
---|
[78cc3be] | 391 | system</para>
|
---|
| 392 | <indexterm zone="ch-system-systemd portablectl">
|
---|
| 393 | <primary sortas="b-portablectl">portablectl</primary>
|
---|
| 394 | </indexterm>
|
---|
| 395 | </listitem>
|
---|
| 396 | </varlistentry>
|
---|
| 397 |
|
---|
[cba2d4e] | 398 | <varlistentry id="poweroff">
|
---|
| 399 | <term><command>poweroff</command></term>
|
---|
| 400 | <listitem>
|
---|
[9e7475a] | 401 | <para>Instructs the kernel to halt the system and switch off the computer
|
---|
[1118b17] | 402 | (see <command>halt</command>)</para>
|
---|
[cba2d4e] | 403 | <indexterm zone="ch-system-systemd poweroff">
|
---|
| 404 | <primary sortas="b-poweroff">poweroff</primary>
|
---|
| 405 | </indexterm>
|
---|
| 406 | </listitem>
|
---|
| 407 | </varlistentry>
|
---|
| 408 |
|
---|
| 409 | <varlistentry id="reboot">
|
---|
| 410 | <term><command>reboot</command></term>
|
---|
[f896e21c] | 411 | <listitem>
|
---|
[9e7475a] | 412 | <para>Instructs the kernel to reboot the system (see
|
---|
[1118b17] | 413 | <command>halt</command>)</para>
|
---|
[cba2d4e] | 414 | <indexterm zone="ch-system-systemd reboot">
|
---|
| 415 | <primary sortas="b-reboot">reboot</primary>
|
---|
[f896e21c] | 416 | </indexterm>
|
---|
| 417 | </listitem>
|
---|
| 418 | </varlistentry>
|
---|
| 419 |
|
---|
[78cc3be] | 420 | <varlistentry id="resolvconf">
|
---|
| 421 | <term><command>resolvconf</command></term>
|
---|
| 422 | <listitem>
|
---|
[9e7475a] | 423 | <para>Registers DNS server and domain configuration with
|
---|
[93058448] | 424 | <command>systemd-resolved</command></para>
|
---|
[78cc3be] | 425 | <indexterm zone="ch-system-systemd resolvconf">
|
---|
| 426 | <primary sortas="b-resolvconf">resolvconf</primary>
|
---|
| 427 | </indexterm>
|
---|
| 428 | </listitem>
|
---|
| 429 | </varlistentry>
|
---|
| 430 |
|
---|
| 431 | <varlistentry id="resolvectl">
|
---|
| 432 | <term><command>resolvectl</command></term>
|
---|
| 433 | <listitem>
|
---|
[9e7475a] | 434 | <para>Sends control commands to the network name resolution
|
---|
| 435 | manager, or resolves domain names, IPv4 and IPv6 addresses,
|
---|
[8d35535] | 436 | DNS records, and services</para>
|
---|
[78cc3be] | 437 | <indexterm zone="ch-system-systemd resolvectl">
|
---|
| 438 | <primary sortas="b-resolvectl">resolvectl</primary>
|
---|
| 439 | </indexterm>
|
---|
| 440 | </listitem>
|
---|
| 441 | </varlistentry>
|
---|
| 442 |
|
---|
[cba2d4e] | 443 | <varlistentry id="runlevel">
|
---|
| 444 | <term><command>runlevel</command></term>
|
---|
[f896e21c] | 445 | <listitem>
|
---|
[9e7475a] | 446 | <para>Outputs the previous and the current run-level, as noted in the
|
---|
[02776dff] | 447 | last run-level record in <filename>/run/utmp</filename></para>
|
---|
[cba2d4e] | 448 | <indexterm zone="ch-system-systemd runlevel">
|
---|
| 449 | <primary sortas="b-runlevel">runlevel</primary>
|
---|
[f896e21c] | 450 | </indexterm>
|
---|
| 451 | </listitem>
|
---|
| 452 | </varlistentry>
|
---|
| 453 |
|
---|
[cba2d4e] | 454 | <varlistentry id="shutdown">
|
---|
| 455 | <term><command>shutdown</command></term>
|
---|
[f896e21c] | 456 | <listitem>
|
---|
[d672ab7] | 457 | <para>Brings the system down in a safe and secure manner, signaling
|
---|
[9e7475a] | 458 | all processes and notifying all logged-in users</para>
|
---|
[cba2d4e] | 459 | <indexterm zone="ch-system-systemd shutdown">
|
---|
| 460 | <primary sortas="b-shutdown">shutdown</primary>
|
---|
[f896e21c] | 461 | </indexterm>
|
---|
| 462 | </listitem>
|
---|
| 463 | </varlistentry>
|
---|
| 464 |
|
---|
[cba2d4e] | 465 | <varlistentry id="systemctl">
|
---|
| 466 | <term><command>systemctl</command></term>
|
---|
[f896e21c] | 467 | <listitem>
|
---|
[9e7475a] | 468 | <para>Is used to introspect and control the state of the systemd system
|
---|
[1118b17] | 469 | and service manager</para>
|
---|
[cba2d4e] | 470 | <indexterm zone="ch-system-systemd systemctl">
|
---|
| 471 | <primary sortas="b-systemctl">systemctl</primary>
|
---|
| 472 | </indexterm>
|
---|
| 473 | </listitem>
|
---|
| 474 | </varlistentry>
|
---|
| 475 |
|
---|
| 476 | <varlistentry id="systemd-analyze">
|
---|
| 477 | <term><command>systemd-analyze</command></term>
|
---|
| 478 | <listitem>
|
---|
[9e7475a] | 479 | <para>Is used to determine system startup performance of the current
|
---|
| 480 | boot, as well as identify troublesome systemd units</para>
|
---|
[cba2d4e] | 481 | <indexterm zone="ch-system-systemd systemd-analyze">
|
---|
| 482 | <primary sortas="b-systemd-analyze">systemd-analyze</primary>
|
---|
| 483 | </indexterm>
|
---|
| 484 | </listitem>
|
---|
| 485 | </varlistentry>
|
---|
| 486 |
|
---|
| 487 | <varlistentry id="systemd-ask-password">
|
---|
| 488 | <term><command>systemd-ask-password</command></term>
|
---|
| 489 | <listitem>
|
---|
[9e7475a] | 490 | <para>Is used to query a system password or passphrase from the user,
|
---|
[1118b17] | 491 | using a question message specified on the command line</para>
|
---|
[cba2d4e] | 492 | <indexterm zone="ch-system-systemd systemd-ask-password">
|
---|
| 493 | <primary sortas="b-systemd-ask-password">systemd-ask-password</primary>
|
---|
| 494 | </indexterm>
|
---|
| 495 | </listitem>
|
---|
| 496 | </varlistentry>
|
---|
| 497 |
|
---|
| 498 | <varlistentry id="systemd-cat">
|
---|
| 499 | <term><command>systemd-cat</command></term>
|
---|
| 500 | <listitem>
|
---|
[9e7475a] | 501 | <para>Is used to connect the STDOUT and STDERR outputs of a process
|
---|
[8d35535] | 502 | with the systemd journal
|
---|
[cba2d4e] | 503 | </para>
|
---|
| 504 | <indexterm zone="ch-system-systemd systemd-cat">
|
---|
| 505 | <primary sortas="b-systemd-cat">systemd-cat</primary>
|
---|
| 506 | </indexterm>
|
---|
| 507 | </listitem>
|
---|
| 508 | </varlistentry>
|
---|
| 509 |
|
---|
| 510 | <varlistentry id="systemd-cgls">
|
---|
| 511 | <term><command>systemd-cgls</command></term>
|
---|
| 512 | <listitem>
|
---|
[1118b17] | 513 | <para>Recursively shows the contents of the selected Linux control
|
---|
| 514 | group hierarchy in a tree</para>
|
---|
[cba2d4e] | 515 | <indexterm zone="ch-system-systemd systemd-cgls">
|
---|
| 516 | <primary sortas="b-systemd-cgls">systemd-cgls</primary>
|
---|
| 517 | </indexterm>
|
---|
| 518 | </listitem>
|
---|
| 519 | </varlistentry>
|
---|
| 520 |
|
---|
| 521 | <varlistentry id="systemd-cgtop">
|
---|
| 522 | <term><command>systemd-cgtop</command></term>
|
---|
| 523 | <listitem>
|
---|
[1118b17] | 524 | <para>Shows the top control groups of the local Linux control group
|
---|
| 525 | hierarchy, ordered by their CPU, memory and disk I/O load</para>
|
---|
[cba2d4e] | 526 | <indexterm zone="ch-system-systemd systemd-cgtop">
|
---|
| 527 | <primary sortas="b-systemd-cgtop">systemd-cgtop</primary>
|
---|
| 528 | </indexterm>
|
---|
| 529 | </listitem>
|
---|
| 530 | </varlistentry>
|
---|
| 531 |
|
---|
[662f649] | 532 | <varlistentry id="systemd-creds">
|
---|
| 533 | <term><command>systemd-creds</command></term>
|
---|
[d7a9421] | 534 | <listitem>
|
---|
[9f0a642] | 535 | <para>Displays and processes credentials</para>
|
---|
[662f649] | 536 | <indexterm zone="ch-system-systemd systemd-creds">
|
---|
| 537 | <primary sortas="b-systemd-creds">systemd-creds</primary>
|
---|
[d7a9421] | 538 | </indexterm>
|
---|
| 539 | </listitem>
|
---|
| 540 | </varlistentry>
|
---|
| 541 |
|
---|
[cba2d4e] | 542 | <varlistentry id="systemd-delta">
|
---|
| 543 | <term><command>systemd-delta</command></term>
|
---|
| 544 | <listitem>
|
---|
[9e7475a] | 545 | <para>Is used to identify and compare configuration files in
|
---|
[cba2d4e] | 546 | <filename class="directory">/etc</filename> that override default
|
---|
[1118b17] | 547 | counterparts in <filename class="directory">/usr</filename></para>
|
---|
[cba2d4e] | 548 | <indexterm zone="ch-system-systemd systemd-delta">
|
---|
| 549 | <primary sortas="b-systemd-delta">systemd-delta</primary>
|
---|
| 550 | </indexterm>
|
---|
| 551 | </listitem>
|
---|
| 552 | </varlistentry>
|
---|
| 553 |
|
---|
| 554 | <varlistentry id="systemd-detect-virt">
|
---|
| 555 | <term><command>systemd-detect-virt</command></term>
|
---|
| 556 | <listitem>
|
---|
[9e7475a] | 557 | <para>Detects whether the system is being run in a virtual
|
---|
[8d35535] | 558 | environment, and adjusts udev accordingly</para>
|
---|
[cba2d4e] | 559 | <indexterm zone="ch-system-systemd systemd-detect-virt">
|
---|
| 560 | <primary sortas="b-systemd-detect-virt">systemd-detect-virt</primary>
|
---|
| 561 | </indexterm>
|
---|
| 562 | </listitem>
|
---|
| 563 | </varlistentry>
|
---|
| 564 |
|
---|
[22009fb] | 565 | <varlistentry id="systemd-dissect">
|
---|
| 566 | <term><command>systemd-dissect</command></term>
|
---|
| 567 | <listitem>
|
---|
[8d35535] | 568 | <para>Is used to inspect OS disk images</para>
|
---|
[22009fb] | 569 | <indexterm zone="ch-system-systemd systemd-dissect">
|
---|
| 570 | <primary sortas="b-systemd-dissect">systemd-dissect</primary>
|
---|
| 571 | </indexterm>
|
---|
| 572 | </listitem>
|
---|
| 573 | </varlistentry>
|
---|
| 574 |
|
---|
[1118b17] | 575 | <varlistentry id="systemd-escape">
|
---|
| 576 | <term><command>systemd-escape</command></term>
|
---|
| 577 | <listitem>
|
---|
[9e7475a] | 578 | <para>Is used to escape strings for inclusion in systemd unit
|
---|
[1118b17] | 579 | names</para>
|
---|
| 580 | <indexterm zone="ch-system-systemd systemd-escape">
|
---|
| 581 | <primary sortas="b-systemd-escape">systemd-escape</primary>
|
---|
| 582 | </indexterm>
|
---|
| 583 | </listitem>
|
---|
| 584 | </varlistentry>
|
---|
| 585 |
|
---|
| 586 | <varlistentry id="systemd-hwdb">
|
---|
| 587 | <term><command>systemd-hwdb</command></term>
|
---|
| 588 | <listitem>
|
---|
[9e7475a] | 589 | <para>Is used to manage the hardware database (hwdb)</para>
|
---|
[1118b17] | 590 | <indexterm zone="ch-system-systemd systemd-hwdb">
|
---|
| 591 | <primary sortas="b-systemd-hwdb">systemd-hwdb</primary>
|
---|
| 592 | </indexterm>
|
---|
| 593 | </listitem>
|
---|
| 594 | </varlistentry>
|
---|
| 595 |
|
---|
[78cc3be] | 596 | <varlistentry id="systemd-id128">
|
---|
| 597 | <term><command>systemd-id128</command></term>
|
---|
| 598 | <listitem>
|
---|
[9e7475a] | 599 | <para>Generates and prints id128 strings</para>
|
---|
[78cc3be] | 600 | <indexterm zone="ch-system-systemd systemd-id128">
|
---|
| 601 | <primary sortas="b-systemd-id128">systemd-id128</primary>
|
---|
| 602 | </indexterm>
|
---|
| 603 | </listitem>
|
---|
| 604 | </varlistentry>
|
---|
| 605 |
|
---|
[cba2d4e] | 606 | <varlistentry id="systemd-inhibit">
|
---|
| 607 | <term><command>systemd-inhibit</command></term>
|
---|
| 608 | <listitem>
|
---|
[9e7475a] | 609 | <para>Is used to execute a program with a shutdown, sleep or idle
|
---|
| 610 | inhibitor lock taken, preventing an action such as a system shutdown
|
---|
[8d35535] | 611 | until the process is completed</para>
|
---|
[cba2d4e] | 612 | <indexterm zone="ch-system-systemd systemd-inhibit">
|
---|
| 613 | <primary sortas="b-systemd-inhibit">systemd-inhibit</primary>
|
---|
| 614 | </indexterm>
|
---|
| 615 | </listitem>
|
---|
| 616 | </varlistentry>
|
---|
| 617 |
|
---|
| 618 | <varlistentry id="systemd-machine-id-setup">
|
---|
| 619 | <term><command>systemd-machine-id-setup</command></term>
|
---|
| 620 | <listitem>
|
---|
[9e7475a] | 621 | <para>Is used by system installer tools to initialize the machine ID
|
---|
[1118b17] | 622 | stored in <filename>/etc/machine-id</filename> at install time with a
|
---|
| 623 | randomly generated ID</para>
|
---|
[cba2d4e] | 624 | <indexterm zone="ch-system-systemd systemd-machine-id-setup">
|
---|
| 625 | <primary sortas="b-systemd-machine-id-setup">systemd-machine-id-setup</primary>
|
---|
| 626 | </indexterm>
|
---|
| 627 | </listitem>
|
---|
| 628 | </varlistentry>
|
---|
| 629 |
|
---|
[13c8b42] | 630 | <varlistentry id="systemd-mount">
|
---|
| 631 | <term><command>systemd-mount</command></term>
|
---|
| 632 | <listitem>
|
---|
[8d35535] | 633 | <para>Is used to temporarily mount or automount disks</para>
|
---|
[13c8b42] | 634 | <indexterm zone="ch-system-systemd systemd-mount">
|
---|
| 635 | <primary sortas="b-systemd-mount">systemd-mount</primary>
|
---|
| 636 | </indexterm>
|
---|
| 637 | </listitem>
|
---|
| 638 | </varlistentry>
|
---|
| 639 |
|
---|
[cba2d4e] | 640 | <varlistentry id="systemd-notify">
|
---|
| 641 | <term><command>systemd-notify</command></term>
|
---|
| 642 | <listitem>
|
---|
[9e7475a] | 643 | <para>Is used by daemon scripts to notify the init system about status
|
---|
[1118b17] | 644 | changes</para>
|
---|
[cba2d4e] | 645 | <indexterm zone="ch-system-systemd systemd-notify">
|
---|
| 646 | <primary sortas="b-systemd-notify">systemd-notify</primary>
|
---|
| 647 | </indexterm>
|
---|
| 648 | </listitem>
|
---|
| 649 | </varlistentry>
|
---|
| 650 |
|
---|
| 651 | <varlistentry id="systemd-nspawn">
|
---|
| 652 | <term><command>systemd-nspawn</command></term>
|
---|
| 653 | <listitem>
|
---|
[9e7475a] | 654 | <para>Is used to run a command or OS in a light-weight namespace
|
---|
[1118b17] | 655 | container</para>
|
---|
[cba2d4e] | 656 | <indexterm zone="ch-system-systemd systemd-nspawn">
|
---|
| 657 | <primary sortas="b-systemd-nspawn">systemd-nspawn</primary>
|
---|
| 658 | </indexterm>
|
---|
| 659 | </listitem>
|
---|
| 660 | </varlistentry>
|
---|
| 661 |
|
---|
[1118b17] | 662 | <varlistentry id="systemd-path">
|
---|
| 663 | <term><command>systemd-path</command></term>
|
---|
| 664 | <listitem>
|
---|
[9e7475a] | 665 | <para>Is used to query system and user paths</para>
|
---|
[1118b17] | 666 | <indexterm zone="ch-system-systemd systemd-path">
|
---|
| 667 | <primary sortas="b-systemd-path">systemd-path</primary>
|
---|
| 668 | </indexterm>
|
---|
| 669 | </listitem>
|
---|
| 670 | </varlistentry>
|
---|
| 671 |
|
---|
[c06f49a] | 672 | <varlistentry id="systemd-repart">
|
---|
| 673 | <term><command>systemd-repart</command></term>
|
---|
| 674 | <listitem>
|
---|
[9e7475a] | 675 | <para>Is used to grow and add partitions to a partition table when
|
---|
[8d35535] | 676 | systemd is used in an OS image (e.g. a container)</para>
|
---|
[c06f49a] | 677 | <indexterm zone="ch-system-systemd systemd-repart">
|
---|
| 678 | <primary sortas="b-systemd-repart">systemd-repart</primary>
|
---|
| 679 | </indexterm>
|
---|
| 680 | </listitem>
|
---|
| 681 | </varlistentry>
|
---|
| 682 |
|
---|
[1118b17] | 683 | <varlistentry id="systemd-resolve">
|
---|
| 684 | <term><command>systemd-resolve</command></term>
|
---|
| 685 | <listitem>
|
---|
[9e7475a] | 686 | <para>Is used to resolve domain names, IPV4 and IPv6 addresses, DNS
|
---|
[1118b17] | 687 | resource records, and services</para>
|
---|
| 688 | <indexterm zone="ch-system-systemd systemd-resolve">
|
---|
| 689 | <primary sortas="b-systemd-resolve">systemd-resolve</primary>
|
---|
| 690 | </indexterm>
|
---|
| 691 | </listitem>
|
---|
| 692 | </varlistentry>
|
---|
| 693 |
|
---|
[cba2d4e] | 694 | <varlistentry id="systemd-run">
|
---|
| 695 | <term><command>systemd-run</command></term>
|
---|
| 696 | <listitem>
|
---|
[9e7475a] | 697 | <para>Is used to create and start a transient .service or a .scope
|
---|
| 698 | unit and run the specified command in it. This is useful for
|
---|
[8d35535] | 699 | validating systemd units</para>
|
---|
[cba2d4e] | 700 | <indexterm zone="ch-system-systemd systemd-run">
|
---|
| 701 | <primary sortas="b-systemd-run">systemd-run</primary>
|
---|
| 702 | </indexterm>
|
---|
| 703 | </listitem>
|
---|
| 704 | </varlistentry>
|
---|
| 705 |
|
---|
[13c8b42] | 706 | <varlistentry id="systemd-socket-activate">
|
---|
| 707 | <term><command>systemd-socket-activate</command></term>
|
---|
| 708 | <listitem>
|
---|
[9e7475a] | 709 | <para>Is used to listen on socket devices and launch a process upon
|
---|
[8d35535] | 710 | a successful connection to the socket</para>
|
---|
[13c8b42] | 711 | <indexterm zone="ch-system-systemd systemd-socket-activate">
|
---|
| 712 | <primary sortas="b-systemd-socket-activate">systemd-socket-activate</primary>
|
---|
| 713 | </indexterm>
|
---|
| 714 | </listitem>
|
---|
| 715 | </varlistentry>
|
---|
| 716 |
|
---|
[d7a9421] | 717 | <varlistentry id="systemd-sysext">
|
---|
| 718 | <term><command>systemd-sysext</command></term>
|
---|
| 719 | <listitem>
|
---|
[871fd2f] | 720 | <para>Activates system extension images</para>
|
---|
[d7a9421] | 721 | <indexterm zone="ch-system-systemd systemd-sysext">
|
---|
| 722 | <primary sortas="b-systemd-sysext">systemd-sysext</primary>
|
---|
| 723 | </indexterm>
|
---|
| 724 | </listitem>
|
---|
| 725 | </varlistentry>
|
---|
| 726 |
|
---|
[cba2d4e] | 727 | <varlistentry id="systemd-tmpfiles">
|
---|
| 728 | <term><command>systemd-tmpfiles</command></term>
|
---|
| 729 | <listitem>
|
---|
[1118b17] | 730 | <para>Creates, deletes and cleans up volatile and temporary files and
|
---|
| 731 | directories, based on the configuration file format and location
|
---|
| 732 | specified in
|
---|
| 733 | <filename class="directory">tmpfiles.d</filename> directories</para>
|
---|
[cba2d4e] | 734 | <indexterm zone="ch-system-systemd systemd-tmpfiles">
|
---|
| 735 | <primary sortas="b-systemd-tmpfiles">systemd-tmpfiles</primary>
|
---|
| 736 | </indexterm>
|
---|
| 737 | </listitem>
|
---|
| 738 | </varlistentry>
|
---|
| 739 |
|
---|
[78cc3be] | 740 | <varlistentry id="systemd-umount">
|
---|
| 741 | <term><command>systemd-umount</command></term>
|
---|
| 742 | <listitem>
|
---|
[9e7475a] | 743 | <para>Unmounts mount points</para>
|
---|
[78cc3be] | 744 | <indexterm zone="ch-system-systemd systemd-umount">
|
---|
| 745 | <primary sortas="b-systemd-umount">systemd-umount</primary>
|
---|
| 746 | </indexterm>
|
---|
| 747 | </listitem>
|
---|
| 748 | </varlistentry>
|
---|
| 749 |
|
---|
[cba2d4e] | 750 | <varlistentry id="systemd-tty-ask-password-agent">
|
---|
| 751 | <term><command>systemd-tty-ask-password-agent</command></term>
|
---|
| 752 | <listitem>
|
---|
[d672ab7] | 753 | <para>Is used to list and/or process pending systemd password
|
---|
[9e7475a] | 754 | requests</para>
|
---|
[cba2d4e] | 755 | <indexterm zone="ch-system-systemd systemd-tty-ask-password-agent">
|
---|
| 756 | <primary sortas="b-systemd-tty-ask-password-agent">systemd-tty-ask-password-agent</primary>
|
---|
| 757 | </indexterm>
|
---|
| 758 | </listitem>
|
---|
| 759 | </varlistentry>
|
---|
| 760 |
|
---|
| 761 | <varlistentry id="telinit">
|
---|
| 762 | <term><command>telinit</command></term>
|
---|
| 763 | <listitem>
|
---|
[1118b17] | 764 | <para>Tells <command>init</command> which run-level to change
|
---|
| 765 | to</para>
|
---|
[cba2d4e] | 766 | <indexterm zone="ch-system-systemd telinit">
|
---|
| 767 | <primary sortas="b-telinit">telinit</primary>
|
---|
| 768 | </indexterm>
|
---|
| 769 | </listitem>
|
---|
| 770 | </varlistentry>
|
---|
| 771 |
|
---|
| 772 | <varlistentry id="timedatectl">
|
---|
| 773 | <term><command>timedatectl</command></term>
|
---|
| 774 | <listitem>
|
---|
[9e7475a] | 775 | <para>Is used to query and change the system clock and its settings
|
---|
[cba2d4e] | 776 | </para>
|
---|
| 777 | <indexterm zone="ch-system-systemd timedatectl">
|
---|
| 778 | <primary sortas="b-timedatectl">timedatectl</primary>
|
---|
[f896e21c] | 779 | </indexterm>
|
---|
| 780 | </listitem>
|
---|
| 781 | </varlistentry>
|
---|
| 782 |
|
---|
| 783 | <varlistentry id="udevadm">
|
---|
| 784 | <term><command>udevadm</command></term>
|
---|
| 785 | <listitem>
|
---|
[d672ab7] | 786 | <para>Is a generic udev administration tool which controls the udevd
|
---|
| 787 | daemon, provides info from the Udev hardware database, monitors
|
---|
| 788 | uevents, waits for uevents to finish, tests udev configuration, and
|
---|
[9e7475a] | 789 | triggers uevents for a given device</para>
|
---|
[cba2d4e] | 790 | <indexterm zone="ch-system-systemd udevadm">
|
---|
[f896e21c] | 791 | <primary sortas="b-udevadm">udevadm</primary>
|
---|
| 792 | </indexterm>
|
---|
| 793 | </listitem>
|
---|
| 794 | </varlistentry>
|
---|
| 795 |
|
---|
[cba2d4e] | 796 | <varlistentry id="libsystemd">
|
---|
| 797 | <term><filename class="libraryfile">libsystemd</filename></term>
|
---|
[f896e21c] | 798 | <listitem>
|
---|
[9e7475a] | 799 | <para>Is the main systemd utility library</para>
|
---|
[cba2d4e] | 800 | <indexterm zone="ch-system-systemd libsystemd">
|
---|
| 801 | <primary sortas="c-libsystemd">libsystemd</primary>
|
---|
[f896e21c] | 802 | </indexterm>
|
---|
| 803 | </listitem>
|
---|
| 804 | </varlistentry>
|
---|
| 805 |
|
---|
| 806 | <varlistentry id="libudev">
|
---|
| 807 | <term><filename class="libraryfile">libudev</filename></term>
|
---|
| 808 | <listitem>
|
---|
[9e7475a] | 809 | <para>Is a library to access Udev device information</para>
|
---|
[cba2d4e] | 810 | <indexterm zone="ch-system-systemd libudev">
|
---|
[f896e21c] | 811 | <primary sortas="c-libudev">libudev</primary>
|
---|
| 812 | </indexterm>
|
---|
| 813 | </listitem>
|
---|
| 814 | </varlistentry>
|
---|
| 815 |
|
---|
| 816 | </variablelist>
|
---|
| 817 |
|
---|
| 818 | </sect2>
|
---|
| 819 |
|
---|
| 820 | </sect1>
|
---|