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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8 | <sect1 id="ch-system-systemd" role="wrap">
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9 | <?dbhtml filename="systemd.html"?>
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10 |
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11 | <sect1info condition="script">
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12 | <productname>systemd</productname>
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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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17 | <title>Systemd-&systemd-version;</title>
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18 |
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19 | <indexterm zone="ch-system-systemd">
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20 | <primary sortas="a-Systemd">Systemd</primary>
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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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26 | <para>The Systemd package contains programs for controlling the startup,
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27 | running, and shutdown of the system.</para>
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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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34 | <seg>&systemd-ch6-sbu;</seg>
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35 | <seg>&systemd-ch6-du;</seg>
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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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41 | <title>Installation of Systemd</title>
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42 |
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43 | <note><para>If systemd is not desired at all, it can be skipped. However a
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44 | udev replacement must be installed. See the hint at <ulink
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45 | url="http://www.linuxfromscratch.org/hints/downloads/files/eudev-alt-hint.txt"/>
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46 | to find procedures to install
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47 | <application>eudev</application>.</para></note>
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48 |
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49 | <para>First, create a file to allow Systemd to build when using Util-Linux
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50 | built in Chapter 5:</para>
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51 |
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52 | <screen><userinput remap="pre">cat > config.cache << "EOF"
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53 | <literal>KILL=/bin/kill
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54 | HAVE_BLKID=1
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55 | BLKID_LIBS="-lblkid"
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56 | BLKID_CFLAGS="-I/tools/include/blkid"
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57 | cc_cv_CFLAGS__flto=no</literal>
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58 | EOF</userinput></screen>
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59 |
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60 | <para>Additionally, fix a build error when using Util-Linux built in
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61 | Chapter 5:</para>
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62 |
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63 | <screen><userinput remap="pre">sed -i "s:blkid/::" $(grep -rl "blkid/blkid.h")</userinput></screen>
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64 |
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65 | <para>Apply a patch so that compat <command>pkg-config</command> files get
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66 | installed without installing compat libs which are useless on LFS:</para>
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67 |
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68 | <screen><userinput remap="pre">patch -Np1 -i ../&systemd-compat-patch;</userinput></screen>
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69 |
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70 | <para>Prepare Systemd for compilation:</para>
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71 |
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72 | <screen><userinput remap="configure">./configure --prefix=/usr \
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73 | --sysconfdir=/etc \
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74 | --localstatedir=/var \
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75 | --config-cache \
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76 | --with-rootprefix= \
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77 | --with-rootlibdir=/lib \
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78 | --enable-split-usr \
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79 | --disable-gudev \
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80 | --without-python \
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81 | --docdir=/usr/share/doc/systemd-&systemd-version; \
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82 | --with-dbuspolicydir=/etc/dbus-1/system.d \
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83 | --with-dbusinterfacedir=/usr/share/dbus-1/interfaces \
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84 | --with-dbussessionservicedir=/usr/share/dbus-1/services \
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85 | --with-dbussystemservicedir=/usr/share/dbus-1/system-services</userinput></screen>
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86 |
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87 | <variablelist>
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88 | <title>The meaning of the configure options:</title>
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89 |
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90 | <varlistentry>
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91 | <term><parameter>--config-cache</parameter></term>
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92 | <listitem>
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93 | <para>This switch tells the build system to use
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94 | the <filename>config.cache</filename> file which
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95 | was created earlier.</para>
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96 | </listitem>
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97 | </varlistentry>
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98 |
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99 | <varlistentry>
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100 | <term><parameter>--with-root*</parameter></term>
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101 | <listitem>
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102 | <para>These switches ensure that core programs and
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103 | shared libraries are installed in the subdirectories
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104 | of the root partition.</para>
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105 | </listitem>
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106 | </varlistentry>
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107 |
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108 | <varlistentry>
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109 | <term><parameter>--enable-split-usr</parameter></term>
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110 | <listitem>
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111 | <para>This switch ensures that Systemd will work on
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112 | systems where /bin, /lib and /sbin directories are not
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113 | symlinks to their /usr counterparts.</para>
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114 | </listitem>
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115 | </varlistentry>
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116 |
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117 | <varlistentry>
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118 | <term><parameter>--disable-gudev --without-python</parameter></term>
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119 | <listitem>
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120 | <para>These switches disable optional features because
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121 | LFS does not provide their dependencies.</para>
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122 | </listitem>
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123 | </varlistentry>
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124 |
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125 | <varlistentry>
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126 | <term><parameter>--with-dbus*</parameter></term>
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127 | <listitem>
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128 | <para>These switches ensure that D-Bus configuratil files
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129 | get installed in the correct locations.</para>
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130 | </listitem>
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131 | </varlistentry>
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132 |
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133 | </variablelist>
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134 |
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135 | <para>Compile the package:</para>
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136 |
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137 | <screen><userinput remap="make">make LIBRARY_PATH=/tools/lib</userinput></screen>
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138 |
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139 | <para>First prevent few broken test cases from running:</para>
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140 |
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141 | <screen><userinput remap="test">sed -e "s:test/udev-test.pl::g" \
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142 | -e "s:test-bus-cleanup\$(EXEEXT) ::g" \
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143 | -e "s:test-bus-gvariant\$(EXEEXT) ::g" \
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144 | -i Makefile</userinput></screen>
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145 |
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146 | <para>To test the results, issue:</para>
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147 |
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148 | <screen><userinput remap="test">make -k check</userinput></screen>
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149 |
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150 | <para>Note that some tests might fail because the test are being run in a
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151 | chroot environment. For full test coverage, the test suite should be run
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152 | from a system booted using Systemd.</para>
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153 |
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154 | <para>Install the package:</para>
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155 |
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156 | <screen><userinput remap="install">make LD_LIBRARY_PATH=/tools/lib install</userinput></screen>
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157 |
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158 | <para>Move NSS myhostname library to <filename
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159 | class="directory">/lib</filename>:</para>
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160 |
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161 | <screen><userinput remap="install">mv -v /usr/lib/libnss_myhostname.so.2 /lib</userinput></screen>
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162 |
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163 | <para>Remove an unnecessary directory:</para>
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164 |
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165 | <screen><userinput remap="install">rm -rfv /usr/lib/rpm</userinput></screen>
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166 |
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167 | <para>Create the Sysvinit compatibility symlinks, and move some man pages
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168 | and a library that conflict with <xref linkend="ch-system-sysvinit"/> so
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169 | both systems can be installed side-by-side:</para>
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170 |
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171 | <screen><userinput remap="install">for tool in runlevel reboot shutdown poweroff halt telinit; do
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172 | ln -sfv ../bin/systemctl /sbin/${tool}-systemd
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173 | mv -v /usr/share/man/man8/${tool}.8 /usr/share/man/man8/${tool}-systemd.8
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174 | done
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175 |
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176 | ln -sfv ../lib/systemd/systemd /sbin/init-systemd
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177 | mv -v /etc/init.d /etc/init.d-systemd</userinput></screen>
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178 |
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179 | <para>Remove a reference to a non-existent group:</para>
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180 |
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181 | <screen><userinput remap="install">sed -i "s:0775 root lock:0755 root root:g" /usr/lib/tmpfiles.d/legacy.conf</userinput></screen>
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182 |
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183 | <para>Create the <filename>/etc/machine-id</filename> file needed by
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184 | Journald:</para>
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185 |
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186 | <screen><userinput remap="install">systemd-machine-id-setup</userinput></screen>
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187 |
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188 | <para>Finally install some LFS specific udev rules:</para>
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189 |
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190 | <screen><userinput remap="install">tar -xf ../&udev-lfs-version;.tar.bz2
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191 | make -f &udev-lfs-version;/Makefile.lfs install</userinput></screen>
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192 |
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193 | </sect2>
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194 |
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195 | <sect2 id="contents-systemd" role="content">
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196 | <title>Contents of Systemd</title>
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197 |
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198 | <segmentedlist>
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199 | <segtitle>Installed programs</segtitle>
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200 | <segtitle>Installed libraries</segtitle>
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201 | <segtitle>Installed directories</segtitle>
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202 |
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203 | <seglistitem>
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204 | <seg>bootctl, busctl, halt, hostnamectl, init, journalctl, kernel-install,
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205 | localectl, loginctl, machinectl, poweroff, reboot, runlevel, shutdown,
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206 | systemctl, systemd-analyze, systemd-ask-password, systemd-cat, systemd-cgls,
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207 | systemd-cgtop, systemd-coredumpctl, systemd-delta, systemd-detect-virt,
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208 | systemd-inhibit, systemd-machine-id-setup, systemd-notify, systemd-nspawn,
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209 | systemd-run, systemd-stdio-bridge, systemd-tmpfiles, systemd-tty-ask-password-agent,
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210 | telinit, timedatectl, and udevadm</seg>
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211 |
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212 | <seg>libnss_myhostname.so.2, libsystemd.so, libudev.so</seg>
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213 | <seg>/etc/binfmt.d, /etc/init.d, /etc/kernel, /etc/modules-load.d,
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214 | /etc/sysctl.d, /etc/systemd, /etc/tmpfiles.d, /etc/udev,
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215 | /etc/xdg/systemd, /lib/systemd, /lib/udev, /usr/include/systemd,
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216 | /usr/lib/binfmt.d, /usr/lib/kernel, /usr/lib/modules-load.d,
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217 | /usr/lib/sysctl.d, /usr/lib/systemd, /usr/lib/tmpfiles.d,
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218 | /usr/share/doc/systemd-&systemd-version;, /usr/share/systemd,
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219 | /var/lib/systemd, /var/log/journal</seg>
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220 | </seglistitem>
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221 | </segmentedlist>
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222 |
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223 | <variablelist>
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224 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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225 | <?dbfo list-presentation="list"?>
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226 | <?dbhtml list-presentation="table"?>
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227 |
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228 | <varlistentry id="bootctl">
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229 | <term><command>bootctl</command></term>
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230 | <listitem>
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231 | <para>used to query the firmware and boot manager settings.</para>
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232 | <indexterm zone="ch-system-systemd bootctl">
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233 | <primary sortas="b-bootctl">bootctl</primary>
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234 | </indexterm>
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235 | </listitem>
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236 | </varlistentry>
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237 |
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238 | <varlistentry id="busctl">
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239 | <term><command>busctl</command></term>
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240 | <listitem>
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241 | <para>used to introspect and monitor the D-Bus bus.</para>
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242 | <indexterm zone="ch-system-systemd busctl">
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243 | <primary sortas="b-busctl">busctl</primary>
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244 | </indexterm>
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245 | </listitem>
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246 | </varlistentry>
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247 |
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248 | <varlistentry id="halt">
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249 | <term><command>halt</command></term>
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250 | <listitem>
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251 | <para>Normally invokes <command>shutdown</command> with the
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252 | <parameter>-h</parameter> option, except when already in run-level 0,
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253 | then it tells the kernel to halt the system; it notes in the
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254 | file <filename>/var/log/wtmp</filename> that the system is being
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255 | brought down.</para>
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256 | <indexterm zone="ch-system-systemd halt">
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257 | <primary sortas="b-halt">halt</primary>
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258 | </indexterm>
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259 | </listitem>
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260 | </varlistentry>
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261 |
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262 | <varlistentry id="hostnamectl">
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263 | <term><command>hostnamectl</command></term>
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264 | <listitem>
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265 | <para>used to query and change the system hostname and related
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266 | settings.</para>
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267 | <indexterm zone="ch-system-systemd hostnamectl">
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268 | <primary sortas="b-hostnamectl">hostnamectl</primary>
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269 | </indexterm>
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270 | </listitem>
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271 | </varlistentry>
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272 |
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273 | <varlistentry id="init">
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274 | <term><command>init</command></term>
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275 | <listitem>
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276 | <para>The first process to be started when the kernel has initialized
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277 | the hardware which takes over the boot process and starts all the
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278 | proceses it is instructed to.</para>
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279 | <indexterm zone="ch-system-systemd init">
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280 | <primary sortas="b-init">init</primary>
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281 | </indexterm>
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282 | </listitem>
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283 | </varlistentry>
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284 |
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285 | <varlistentry id="journalctl">
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286 | <term><command>journalctl</command></term>
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287 | <listitem>
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288 | <para>used to query the contents of the Systemd Journal.</para>
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289 | <indexterm zone="ch-system-systemd journalctl">
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290 | <primary sortas="b-journalctl">journalctl</primary>
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291 | </indexterm>
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292 | </listitem>
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293 | </varlistentry>
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294 |
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295 | <varlistentry id="kernel-install">
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296 | <term><command>kernel-install</command></term>
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297 | <listitem>
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298 | <para>used to add and remove kernel and initramfs images to and
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299 | from /boot.</para>
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300 | <indexterm zone="ch-system-systemd kernel-install">
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301 | <primary sortas="b-kernel-install">kernel-install</primary>
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302 | </indexterm>
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303 | </listitem>
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304 | </varlistentry>
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305 |
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306 | <varlistentry id="localectl">
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307 | <term><command>localectl</command></term>
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308 | <listitem>
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309 | <para>used to query and change the system locale and keyboard layout
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310 | settings.</para>
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311 | <indexterm zone="ch-system-systemd localectl">
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312 | <primary sortas="b-localectl">localectl</primary>
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313 | </indexterm>
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314 | </listitem>
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315 | </varlistentry>
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316 |
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317 | <varlistentry id="loginctl">
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318 | <term><command>loginctl</command></term>
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319 | <listitem>
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320 | <para>used to introspect and control the state of the Systemd Login
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321 | Manager.</para>
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322 | <indexterm zone="ch-system-systemd loginctl">
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323 | <primary sortas="b-loginctl">loginctl</primary>
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324 | </indexterm>
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325 | </listitem>
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326 | </varlistentry>
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327 |
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328 | <varlistentry id="machinectl">
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329 | <term><command>machinectl</command></term>
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330 | <listitem>
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331 | <para>used to introspect and control the state of the Systemd Virtual
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332 | Machine and Container Registration Manager</para>
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333 | <indexterm zone="ch-system-systemd machinectl">
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334 | <primary sortas="b-machinectl">machinectl</primary>
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335 | </indexterm>
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336 | </listitem>
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337 | </varlistentry>
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338 |
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339 | <varlistentry id="poweroff">
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340 | <term><command>poweroff</command></term>
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341 | <listitem>
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342 | <para>Tells the kernel to halt the system and switch off the computer
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343 | (see <command>halt</command>).</para>
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344 | <indexterm zone="ch-system-systemd poweroff">
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345 | <primary sortas="b-poweroff">poweroff</primary>
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346 | </indexterm>
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347 | </listitem>
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348 | </varlistentry>
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349 |
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350 | <varlistentry id="reboot">
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351 | <term><command>reboot</command></term>
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352 | <listitem>
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353 | <para>Tells the kernel to reboot the system (see
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354 | <command>halt</command>).</para>
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355 | <indexterm zone="ch-system-systemd reboot">
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356 | <primary sortas="b-reboot">reboot</primary>
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357 | </indexterm>
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358 | </listitem>
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359 | </varlistentry>
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360 |
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361 | <varlistentry id="runlevel">
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362 | <term><command>runlevel</command></term>
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363 | <listitem>
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364 | <para>Reports the previous and the current run-level, as noted in the
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365 | last run-level record in <filename>/var/run/utmp</filename>.</para>
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366 | <indexterm zone="ch-system-systemd runlevel">
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367 | <primary sortas="b-runlevel">runlevel</primary>
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368 | </indexterm>
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369 | </listitem>
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370 | </varlistentry>
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371 |
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372 | <varlistentry id="shutdown">
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373 | <term><command>shutdown</command></term>
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374 | <listitem>
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375 | <para>Brings the system down in a secure way, signaling all processes
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376 | and notifying all logged-in users.</para>
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377 | <indexterm zone="ch-system-systemd shutdown">
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378 | <primary sortas="b-shutdown">shutdown</primary>
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379 | </indexterm>
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380 | </listitem>
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381 | </varlistentry>
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382 |
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383 | <varlistentry id="systemctl">
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384 | <term><command>systemctl</command></term>
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385 | <listitem>
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386 | <para>used to introspect and control the state of the Systemd system and
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387 | service manager.</para>
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388 | <indexterm zone="ch-system-systemd systemctl">
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389 | <primary sortas="b-systemctl">systemctl</primary>
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390 | </indexterm>
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391 | </listitem>
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392 | </varlistentry>
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393 |
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394 | <varlistentry id="systemd-analyze">
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395 | <term><command>systemd-analyze</command></term>
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396 | <listitem>
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397 | <para>used to determine system boot-up performance of the current boot.
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398 | </para>
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399 | <indexterm zone="ch-system-systemd systemd-analyze">
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400 | <primary sortas="b-systemd-analyze">systemd-analyze</primary>
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401 | </indexterm>
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402 | </listitem>
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403 | </varlistentry>
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404 |
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405 | <varlistentry id="systemd-ask-password">
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406 | <term><command>systemd-ask-password</command></term>
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407 | <listitem>
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408 | <para>used to query a system password or passphrase from the user, using a
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409 | question message specified on the command line.</para>
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410 | <indexterm zone="ch-system-systemd systemd-ask-password">
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411 | <primary sortas="b-systemd-ask-password">systemd-ask-password</primary>
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412 | </indexterm>
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413 | </listitem>
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414 | </varlistentry>
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415 |
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416 | <varlistentry id="systemd-cat">
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---|
417 | <term><command>systemd-cat</command></term>
|
---|
418 | <listitem>
|
---|
419 | <para>used to connect STDOUT and STDERR of a process with the Journal.
|
---|
420 | </para>
|
---|
421 | <indexterm zone="ch-system-systemd systemd-cat">
|
---|
422 | <primary sortas="b-systemd-cat">systemd-cat</primary>
|
---|
423 | </indexterm>
|
---|
424 | </listitem>
|
---|
425 | </varlistentry>
|
---|
426 |
|
---|
427 | <varlistentry id="systemd-cgls">
|
---|
428 | <term><command>systemd-cgls</command></term>
|
---|
429 | <listitem>
|
---|
430 | <para>recursively shows the contents of the selected Linux control group
|
---|
431 | hierarchy in a tree.</para>
|
---|
432 | <indexterm zone="ch-system-systemd systemd-cgls">
|
---|
433 | <primary sortas="b-systemd-cgls">systemd-cgls</primary>
|
---|
434 | </indexterm>
|
---|
435 | </listitem>
|
---|
436 | </varlistentry>
|
---|
437 |
|
---|
438 | <varlistentry id="systemd-cgtop">
|
---|
439 | <term><command>systemd-cgtop</command></term>
|
---|
440 | <listitem>
|
---|
441 | <para>shows the top control groups of the local Linux control group hierarchy,
|
---|
442 | ordered by their CPU, memory and disk I/O load.</para>
|
---|
443 | <indexterm zone="ch-system-systemd systemd-cgtop">
|
---|
444 | <primary sortas="b-systemd-cgtop">systemd-cgtop</primary>
|
---|
445 | </indexterm>
|
---|
446 | </listitem>
|
---|
447 | </varlistentry>
|
---|
448 |
|
---|
449 | <varlistentry id="systemd-coredumpctl">
|
---|
450 | <term><command>systemd-coredumpctl</command></term>
|
---|
451 | <listitem>
|
---|
452 | <para>used to retrieve coredumps from the Systemd Journal</para>
|
---|
453 | <indexterm zone="ch-system-systemd systemd-coredumpctl">
|
---|
454 | <primary sortas="b-systemd-coredumpctl">systemd-coredumpctl</primary>
|
---|
455 | </indexterm>
|
---|
456 | </listitem>
|
---|
457 | </varlistentry>
|
---|
458 |
|
---|
459 | <varlistentry id="systemd-delta">
|
---|
460 | <term><command>systemd-delta</command></term>
|
---|
461 | <listitem>
|
---|
462 | <para>used to identify and compare configuration files in
|
---|
463 | <filename class="directory">/etc</filename> that override default
|
---|
464 | counterparts in <filename class="directory">/usr</filename>.</para>
|
---|
465 | <indexterm zone="ch-system-systemd systemd-delta">
|
---|
466 | <primary sortas="b-systemd-delta">systemd-delta</primary>
|
---|
467 | </indexterm>
|
---|
468 | </listitem>
|
---|
469 | </varlistentry>
|
---|
470 |
|
---|
471 | <varlistentry id="systemd-detect-virt">
|
---|
472 | <term><command>systemd-detect-virt</command></term>
|
---|
473 | <listitem>
|
---|
474 | <para>detects execution in a virtualized environment.</para>
|
---|
475 | <indexterm zone="ch-system-systemd systemd-detect-virt">
|
---|
476 | <primary sortas="b-systemd-detect-virt">systemd-detect-virt</primary>
|
---|
477 | </indexterm>
|
---|
478 | </listitem>
|
---|
479 | </varlistentry>
|
---|
480 |
|
---|
481 | <varlistentry id="systemd-inhibit">
|
---|
482 | <term><command>systemd-inhibit</command></term>
|
---|
483 | <listitem>
|
---|
484 | <para>used to execute a program with a shutdown, sleep or idle inhibitor lock
|
---|
485 | taken.</para>
|
---|
486 | <indexterm zone="ch-system-systemd systemd-inhibit">
|
---|
487 | <primary sortas="b-systemd-inhibit">systemd-inhibit</primary>
|
---|
488 | </indexterm>
|
---|
489 | </listitem>
|
---|
490 | </varlistentry>
|
---|
491 |
|
---|
492 | <varlistentry id="systemd-machine-id-setup">
|
---|
493 | <term><command>systemd-machine-id-setup</command></term>
|
---|
494 | <listitem>
|
---|
495 | <para>used by system installer tools to initialize the machine ID stored in
|
---|
496 | <filename>/etc/machine-id</filename> at install time with a randomly
|
---|
497 | generated ID.</para>
|
---|
498 | <indexterm zone="ch-system-systemd systemd-machine-id-setup">
|
---|
499 | <primary sortas="b-systemd-machine-id-setup">systemd-machine-id-setup</primary>
|
---|
500 | </indexterm>
|
---|
501 | </listitem>
|
---|
502 | </varlistentry>
|
---|
503 |
|
---|
504 | <varlistentry id="systemd-notify">
|
---|
505 | <term><command>systemd-notify</command></term>
|
---|
506 | <listitem>
|
---|
507 | <para>used by daemon scripts to notify the init system about status changes.
|
---|
508 | </para>
|
---|
509 | <indexterm zone="ch-system-systemd systemd-notify">
|
---|
510 | <primary sortas="b-systemd-notify">systemd-notify</primary>
|
---|
511 | </indexterm>
|
---|
512 | </listitem>
|
---|
513 | </varlistentry>
|
---|
514 |
|
---|
515 | <varlistentry id="systemd-nspawn">
|
---|
516 | <term><command>systemd-nspawn</command></term>
|
---|
517 | <listitem>
|
---|
518 | <para>used to run a command or OS in a light-weight namespace container.</para>
|
---|
519 | <indexterm zone="ch-system-systemd systemd-nspawn">
|
---|
520 | <primary sortas="b-systemd-nspawn">systemd-nspawn</primary>
|
---|
521 | </indexterm>
|
---|
522 | </listitem>
|
---|
523 | </varlistentry>
|
---|
524 |
|
---|
525 | <varlistentry id="systemd-run">
|
---|
526 | <term><command>systemd-run</command></term>
|
---|
527 | <listitem>
|
---|
528 | <para>used to create and start a transient .service or a .scope unit and
|
---|
529 | run the specified command in it.</para>
|
---|
530 | <indexterm zone="ch-system-systemd systemd-run">
|
---|
531 | <primary sortas="b-systemd-run">systemd-run</primary>
|
---|
532 | </indexterm>
|
---|
533 | </listitem>
|
---|
534 | </varlistentry>
|
---|
535 |
|
---|
536 | <!-- <varlistentry id="systemd-stdio-bridge">
|
---|
537 | <term><command>systemd-stdio-bridge</command></term>
|
---|
538 | <listitem>
|
---|
539 | <para>To be completed</para>
|
---|
540 | <indexterm zone="ch-system-systemd systemd-stdio-bridge">
|
---|
541 | <primary sortas="b-systemd-stdio-bridge">systemd-stdio-bridge</primary>
|
---|
542 | </indexterm>
|
---|
543 | </listitem>
|
---|
544 | </varlistentry> -->
|
---|
545 |
|
---|
546 | <varlistentry id="systemd-tmpfiles">
|
---|
547 | <term><command>systemd-tmpfiles</command></term>
|
---|
548 | <listitem>
|
---|
549 | <para>creates, deletes and cleans up volatile and temporary files and directories,
|
---|
550 | based on the configuration file format and location specified in
|
---|
551 | <filename class="directory">tmpfiles.d</filename> directories.</para>
|
---|
552 | <indexterm zone="ch-system-systemd systemd-tmpfiles">
|
---|
553 | <primary sortas="b-systemd-tmpfiles">systemd-tmpfiles</primary>
|
---|
554 | </indexterm>
|
---|
555 | </listitem>
|
---|
556 | </varlistentry>
|
---|
557 |
|
---|
558 | <varlistentry id="systemd-tty-ask-password-agent">
|
---|
559 | <term><command>systemd-tty-ask-password-agent</command></term>
|
---|
560 | <listitem>
|
---|
561 | <para>used to list or process pending Systemd password requests</para>
|
---|
562 | <indexterm zone="ch-system-systemd systemd-tty-ask-password-agent">
|
---|
563 | <primary sortas="b-systemd-tty-ask-password-agent">systemd-tty-ask-password-agent</primary>
|
---|
564 | </indexterm>
|
---|
565 | </listitem>
|
---|
566 | </varlistentry>
|
---|
567 |
|
---|
568 | <varlistentry id="telinit">
|
---|
569 | <term><command>telinit</command></term>
|
---|
570 | <listitem>
|
---|
571 | <para>Tells <command>init</command> which run-level to change to.</para>
|
---|
572 | <indexterm zone="ch-system-systemd telinit">
|
---|
573 | <primary sortas="b-telinit">telinit</primary>
|
---|
574 | </indexterm>
|
---|
575 | </listitem>
|
---|
576 | </varlistentry>
|
---|
577 |
|
---|
578 | <varlistentry id="timedatectl">
|
---|
579 | <term><command>timedatectl</command></term>
|
---|
580 | <listitem>
|
---|
581 | <para>used to query and change the system clock and its settings.
|
---|
582 | </para>
|
---|
583 | <indexterm zone="ch-system-systemd timedatectl">
|
---|
584 | <primary sortas="b-timedatectl">timedatectl</primary>
|
---|
585 | </indexterm>
|
---|
586 | </listitem>
|
---|
587 | </varlistentry>
|
---|
588 |
|
---|
589 | <varlistentry id="udevadm">
|
---|
590 | <term><command>udevadm</command></term>
|
---|
591 | <listitem>
|
---|
592 | <para>Generic Udev administration tool: controls the udevd daemon,
|
---|
593 | provides info from the Udev database, monitors uevents, waits for
|
---|
594 | uevents to finish, tests Udev configuration, and triggers uevents
|
---|
595 | for a given device.</para>
|
---|
596 | <indexterm zone="ch-system-systemd udevadm">
|
---|
597 | <primary sortas="b-udevadm">udevadm</primary>
|
---|
598 | </indexterm>
|
---|
599 | </listitem>
|
---|
600 | </varlistentry>
|
---|
601 |
|
---|
602 | <varlistentry id="libsystemd">
|
---|
603 | <term><filename class="libraryfile">libsystemd</filename></term>
|
---|
604 | <listitem>
|
---|
605 | <para>Systemd utility library.</para>
|
---|
606 | <indexterm zone="ch-system-systemd libsystemd">
|
---|
607 | <primary sortas="c-libsystemd">libsystemd</primary>
|
---|
608 | </indexterm>
|
---|
609 | </listitem>
|
---|
610 | </varlistentry>
|
---|
611 |
|
---|
612 | <varlistentry id="libudev">
|
---|
613 | <term><filename class="libraryfile">libudev</filename></term>
|
---|
614 | <listitem>
|
---|
615 | <para>A library to access Udev device information.</para>
|
---|
616 | <indexterm zone="ch-system-systemd libudev">
|
---|
617 | <primary sortas="c-libudev">libudev</primary>
|
---|
618 | </indexterm>
|
---|
619 | </listitem>
|
---|
620 | </varlistentry>
|
---|
621 |
|
---|
622 | </variablelist>
|
---|
623 |
|
---|
624 | </sect2>
|
---|
625 |
|
---|
626 | </sect1>
|
---|