[8a75933] | 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-eudev" role="wrap" revision="sysv">
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[8a75933] | 9 | <?dbhtml filename="eudev.html"?>
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| 10 |
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| 11 | <sect1info condition="script">
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| 12 | <productname>eudev</productname>
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| 13 | <productnumber>&eudev-version;</productnumber>
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| 14 | <address>&eudev-url;</address>
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| 15 | </sect1info>
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| 16 |
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| 17 | <title>Eudev-&eudev-version;</title>
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| 18 |
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| 19 | <indexterm zone="ch-system-eudev">
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| 20 | <primary sortas="a-Eudev">Eudev</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 Eudev package contains programs for dynamic creation of device
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[d672ab7] | 27 | nodes.</para>
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[8a75933] | 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>&eudev-fin-sbu;</seg>
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| 35 | <seg>&eudev-fin-du;</seg>
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[8a75933] | 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 Eudev</title>
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| 42 |
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[b17680d] | 43 | <para>First fix the location of udev rules in the .pc file:</para>
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| 44 |
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| 45 | <screen><userinput remap="pre">sed -i '/udevdir/a udev_dir=${udevdir}' src/udev/udev.pc.in</userinput></screen>
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[effe07a] | 46 |
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| 47 | <para>Prepare Eudev for compilation:</para>
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[8a75933] | 48 |
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[99dd957] | 49 | <screen><userinput remap="configure">./configure --prefix=/usr \
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[9901d50d] | 50 | --bindir=/usr/sbin \
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[8a75933] | 51 | --sysconfdir=/etc \
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[54dfb280] | 52 | --enable-manpages \
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[76a706e] | 53 | --disable-static</userinput></screen>
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[53366411] | 54 |
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[effe07a] | 55 | <para>Compile the package:</para>
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[8a75933] | 56 |
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[76a706e] | 57 | <screen><userinput remap="make">make</userinput></screen>
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[8a75933] | 58 |
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[effe07a] | 59 | <para>Create some directories now that are needed for tests, but
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| 60 | will also be used as a part of installation:</para>
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[8a75933] | 61 |
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[d7a9421] | 62 | <screen><userinput remap="test">mkdir -pv /usr/lib/udev/rules.d
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[8a75933] | 63 | mkdir -pv /etc/udev/rules.d</userinput></screen>
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| 64 |
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[effe07a] | 65 | <para>To test the results, issue:</para>
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[8a75933] | 66 |
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[76a706e] | 67 | <screen><userinput remap="test">make check</userinput></screen>
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[8a75933] | 68 |
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[1a96a4ed] | 69 | <para>Install the package:</para>
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[8a75933] | 70 |
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[76a706e] | 71 | <screen><userinput remap="install">make install</userinput></screen>
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[8a75933] | 72 |
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[d672ab7] | 73 | <para>Install some custom rules and support files useful in an LFS
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[8aa7fde] | 74 | environment:</para>
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[111bb20] | 75 |
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[bf7e2c6] | 76 | <screen><userinput remap="install">tar -xvf ../&udev-lfs-version;.tar.xz
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[8aa7fde] | 77 | make -f &udev-lfs-version;/Makefile.lfs install</userinput></screen>
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[111bb20] | 78 |
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[8a75933] | 79 | </sect2>
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| 80 |
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[1a96a4ed] | 81 | <sect2 id="conf-eudev" role="configuration">
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| 82 | <title>Configuring Eudev</title>
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| 83 |
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| 84 | <indexterm zone="conf-eudev">
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| 85 | <primary sortas="a-Eudev">Eudev</primary>
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| 86 | <secondary>configuring</secondary>
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| 87 | </indexterm>
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| 88 |
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[a4b0c6d] | 89 | <indexterm zone="conf-eudev">
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| 90 | <primary sortas="e-/etc/udev/rules.d/65-kvm.rules">/etc/udev/rules.d/65-kvm.rules</primary>
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| 91 | </indexterm>
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| 92 |
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| 93 | <para>
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| 94 | The default udev rule installed by Eudev would allow all users to
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| 95 | access <filename class='devicefile'>/dev/kvm</filename>. The editors
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| 96 | consider it dangerous. Create a configuration file to override it:
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| 97 | </para>
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| 98 |
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| 99 | <screen><userinput remap="configure">cat > /etc/udev/rules.d/65-kvm.rules << "EOF"
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| 100 | <literal>KERNEL=="kvm", GROUP="kvm", MODE="0660", TAG+="uaccess"</literal>
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| 101 | EOF</userinput></screen>
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| 102 |
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[1a96a4ed] | 103 | <indexterm zone="conf-eudev">
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| 104 | <primary sortas="e-/etc/udev/hwdb.bin">/etc/udev/hwdb.bin</primary>
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| 105 | </indexterm>
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| 106 |
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| 107 | <para>Information about hardware devices is maintained in the
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| 108 | <filename class="directory">/etc/udev/hwdb.d</filename> and
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[d7a9421] | 109 | <filename class="directory">/usr/lib/udev/hwdb.d</filename> directories.
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[1a96a4ed] | 110 | <application>Eudev</application> needs that information to be compiled
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| 111 | into a binary database <filename>/etc/udev/hwdb.bin</filename>. Create the
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| 112 | initial database:</para>
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| 113 |
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[76a706e] | 114 | <screen><userinput>udevadm hwdb --update</userinput></screen>
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[1a96a4ed] | 115 |
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| 116 | <para>This command needs to be run each time the hardware information is
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| 117 | updated.</para>
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| 118 |
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| 119 | </sect2>
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| 120 |
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[8a75933] | 121 | <sect2 id="contents-eudev" role="content">
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| 122 | <title>Contents of Eudev</title>
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| 123 |
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| 124 | <segmentedlist>
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| 125 | <segtitle>Installed programs</segtitle>
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| 126 | <segtitle>Installed libraries</segtitle>
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| 127 | <segtitle>Installed directories</segtitle>
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| 128 |
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| 129 | <seglistitem>
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[d7a9421] | 130 | <seg><!-- These are in /usr/lib/udev and not to be called by the user:
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[8a75933] | 131 | accelerometer, ata_id, cdrom_id, collect, mtd_probe,
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| 132 | scsi_id, v4l_id,--> udevadm and udevd</seg>
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| 133 |
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| 134 | <seg>libudev.so</seg>
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| 135 |
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[d7a9421] | 136 | <seg>/etc/udev, /usr/lib/udev, and /usr/share/doc/udev-&udev-lfs-version;</seg>
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[8a75933] | 137 | </seglistitem>
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| 138 | </segmentedlist>
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| 139 |
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| 140 | <variablelist>
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| 141 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 142 | <?dbfo list-presentation="list"?>
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| 143 | <?dbhtml list-presentation="table"?>
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[35a5259] | 144 | <varlistentry id="udevadm" revision="sysv">
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[8a75933] | 145 | <term><command>udevadm</command></term>
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| 146 | <listitem>
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| 147 | <para>Generic udev administration tool: controls the udevd daemon,
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| 148 | provides info from the Udev database, monitors uevents, waits for
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| 149 | uevents to finish, tests Udev configuration, and triggers uevents
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| 150 | for a given device</para>
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| 151 | <indexterm zone="ch-system-eudev udevadm">
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| 152 | <primary sortas="b-udevadm">udevadm</primary>
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| 153 | </indexterm>
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| 154 | </listitem>
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| 155 | </varlistentry>
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| 156 |
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| 157 | <varlistentry id="udevd">
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| 158 | <term><command>udevd</command></term>
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| 159 | <listitem>
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| 160 | <para>A daemon that listens for uevents on the netlink socket,
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| 161 | creates devices and runs the configured external programs in
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| 162 | response to these uevents</para>
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| 163 | <indexterm zone="ch-system-eudev udevd">
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| 164 | <primary sortas="b-udevd">udevd</primary>
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| 165 | </indexterm>
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| 166 | </listitem>
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| 167 | </varlistentry>
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| 168 |
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| 169 | <varlistentry id="libudev">
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| 170 | <term><filename class="libraryfile">libudev</filename></term>
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| 171 | <listitem>
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| 172 | <para>A library interface to udev device information</para>
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| 173 | <indexterm zone="ch-system-eudev libudev">
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| 174 | <primary sortas="c-libudev">libudev</primary>
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| 175 | </indexterm>
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| 176 | </listitem>
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| 177 | </varlistentry>
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| 178 |
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| 179 | <varlistentry id="etc-udev">
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| 180 | <term><filename class="directory">/etc/udev</filename></term>
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| 181 | <listitem>
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| 182 | <para>Contains Udev configuration files,
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| 183 | device permissions, and rules for device naming</para>
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| 184 | <indexterm zone="ch-system-eudev etc-udev">
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| 185 | <primary sortas="e-/etc/udev">/etc/udev</primary>
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| 186 | </indexterm>
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| 187 | </listitem>
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| 188 | </varlistentry>
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| 189 |
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| 190 | </variablelist>
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| 191 |
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| 192 | </sect2>
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| 193 |
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| 194 | </sect1>
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