[9dfc02f] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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[b06ca36] | 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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[9dfc02f] | 4 | <!ENTITY % general-entities SYSTEM "../general.ent">
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| 5 | %general-entities;
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| 6 | ]>
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[ddd5542] | 7 |
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[a001133] | 8 | <sect1 id="ch-system-udev" role="wrap">
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[ddd5542] | 9 | <?dbhtml filename="udev.html"?>
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| 10 |
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[e747759] | 11 | <sect1info condition="script">
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| 12 | <productname>udev</productname>
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| 13 | <productnumber>&udev-version;</productnumber>
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| 14 | <address>&udev-url;</address>
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| 15 | </sect1info>
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| 16 |
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[ddd5542] | 17 | <title>Udev-&udev-version;</title>
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| 18 |
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| 19 | <indexterm zone="ch-system-udev">
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| 20 | <primary sortas="a-Udev">Udev</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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[9dfc02f] | 25 |
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[ddd5542] | 26 | <para>The Udev package contains programs for dynamic creation of device
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| 27 | nodes.</para>
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[9dfc02f] | 28 |
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[ddd5542] | 29 | <segmentedlist>
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| 30 | <segtitle>&buildtime;</segtitle>
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| 31 | <segtitle>&diskspace;</segtitle>
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[9dfc02f] | 32 |
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[ddd5542] | 33 | <seglistitem>
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[e4a5635] | 34 | <seg>&udev-ch6-sbu;</seg>
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[281b7d9] | 35 | <seg>&udev-ch6-du; plus &udev-testfiles-du; for testfiles</seg>
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[ddd5542] | 36 | </seglistitem>
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| 37 | </segmentedlist>
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[9dfc02f] | 38 |
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[ddd5542] | 39 | </sect2>
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[9dfc02f] | 40 |
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[ddd5542] | 41 | <sect2 role="installation">
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| 42 | <title>Installation of Udev</title>
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| 43 |
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[f874424] | 44 | <para>Optionally remove an unneeded warning message that shows up in this
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| 45 | version of udev at boot time.</para>
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| 46 |
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| 47 | <screen><userinput remap="pre">sed -i -e '/deprecated/d' udev/udevadm-trigger.c</userinput></screen>
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| 48 |
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| 49 |
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[7d6d34b] | 50 | <para>The udev-config tarball contains LFS-specific files used to configure
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[e1060de] | 51 | Udev. Unpack it into the Udev source directory:</para>
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[7d6d34b] | 52 |
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[0445a3d] | 53 | <screen><userinput remap="pre">tar -xvf ../&udev-config;.tar.bz2</userinput></screen>
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[7d6d34b] | 54 |
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[281b7d9] | 55 | <para>The udev-testfiles tarball contains files needed to test udev. The
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[a1708ee] | 56 | file expands to an apparent size of about 37MB but the actual disk usage
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[281b7d9] | 57 | is less than 7MB.</para>
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| 58 |
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| 59 | <screen><userinput remap="pre">tar -xvf ../udev-&udev-version;-testfiles.tar.bz2 --strip-components=1</userinput></screen>
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| 60 |
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[d2c332bc] | 61 | <para>Create some devices and directories that Udev cannot handle due to
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[61e63d3] | 62 | them being required very early in the boot process, or by Udev itself:</para>
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[d2c332bc] | 63 |
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[7eae78f] | 64 | <screen><userinput remap="install">install -dv /lib/{firmware,udev/devices/pts}
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[f2ca25f] | 65 | mknod -m0666 /lib/udev/devices/null c 1 3</userinput></screen>
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[d2c332bc] | 66 |
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[166a9db] | 67 | <para>Prepare the package for compilation:</para>
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[81fd230] | 68 |
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[3a34893] | 69 | <!-- Note that "libdir=/usr/lib64" would be required for multilib. -->
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[d75c123] | 70 | <screen><userinput remap="configure">./configure --prefix=/usr \
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[3a34893] | 71 | --sysconfdir=/etc --sbindir=/sbin \
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| 72 | --with-rootlibdir=/lib --libexecdir=/lib/udev \
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[4b12a30] | 73 | --disable-hwdb --disable-introspection \
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[374259a0] | 74 | --disable-keymap --disable-gudev</userinput></screen>
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[3a34893] | 75 |
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| 76 | <variablelist>
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| 77 | <title>The meaning of the new configure options</title>
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| 78 |
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| 79 | <varlistentry>
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| 80 | <term><parameter>--with-rootlibdir=/lib</parameter></term>
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| 81 | <listitem>
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| 82 | <para>This controls where the <filename
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| 83 | class="libraryfile">libudev</filename> library is installed. The
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| 84 | library needs to be in <filename class="directory">/lib</filename>
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| 85 | because it's used by Udev at boot time, before <filename
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| 86 | class="directory">/usr</filename> might be available, and the default
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| 87 | --rootlibdir is <filename class="directory">/usr/lib</filename>.</para>
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| 88 | </listitem>
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| 89 | </varlistentry>
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| 90 |
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| 91 | <!-- Note that libexecdir *MUST* stay /lib/udev, even on a 64-bit
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| 92 | / multilib system where udev is compiled for 64-bit. Other
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| 93 | packages require this exact path; the udev maintainers have
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| 94 | said this is part of the udev API. -->
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| 95 | <varlistentry>
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| 96 | <term><parameter>--libexecdir=/lib/udev</parameter></term>
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| 97 | <listitem>
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| 98 | <para>This controls where Udev-internal rules and helper programs
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| 99 | are installed.</para>
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| 100 | </listitem>
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| 101 | </varlistentry>
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| 102 |
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| 103 | <varlistentry>
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[283fea13] | 104 | <term><parameter>--disable-*</parameter></term>
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[3a34893] | 105 | <listitem>
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[283fea13] | 106 | <para>These options prevent Udev from installing helper programs and
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[3a34893] | 107 | other extras which require more external libraries. These libraries
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| 108 | are not part of the base LFS system. See the Udev
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| 109 | <filename>README</filename> file for more information.</para>
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| 110 | </listitem>
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| 111 | </varlistentry>
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| 112 | </variablelist>
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[ddd5542] | 113 |
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[166a9db] | 114 | <para>Compile the package:</para>
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[0445a3d] | 115 |
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[166a9db] | 116 | <screen><userinput remap="make">make</userinput></screen>
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[81fd230] | 117 |
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[281b7d9] | 118 | <para>Test the package.</para>
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| 119 |
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| 120 | <screen><userinput remap="test">make check</userinput></screen>
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[c226182] | 121 |
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[ddd5542] | 122 | <para>Install the package:</para>
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[9dfc02f] | 123 |
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[166a9db] | 124 | <screen><userinput remap="install">make install</userinput></screen>
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[09043c0] | 125 |
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[7ae8d79] | 126 | <para>Remove an empty documentation directory:</para>
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| 127 |
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[a2f7ad07] | 128 | <screen><userinput remap="install">rmdir -v /usr/share/doc/udev</userinput></screen>
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[7ae8d79] | 129 |
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[9faa3e2] | 130 | <para>Now install the LFS-specific custom rules files:</para>
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[7eac3e32] | 131 |
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[0445a3d] | 132 | <screen><userinput remap="install">cd &udev-config;
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[7e6fb44] | 133 | make install</userinput></screen>
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| 134 |
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| 135 | <para>Install the documentation that explains the LFS-specific rules
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| 136 | files:</para>
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| 137 |
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[0445a3d] | 138 | <screen><userinput remap="install">make install-doc</userinput></screen>
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[7e6fb44] | 139 |
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[ddd5542] | 140 | </sect2>
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| 141 |
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| 142 | <sect2 id="contents-udev" role="content">
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| 143 | <title>Contents of Udev</title>
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| 144 |
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| 145 | <segmentedlist>
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| 146 | <segtitle>Installed programs</segtitle>
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[2791a8e] | 147 | <segtitle>Installed libraries</segtitle>
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[fe05b08] | 148 | <segtitle>Installed directories</segtitle>
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[ddd5542] | 149 |
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| 150 | <seglistitem>
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[61e63d3] | 151 | <seg>ata_id, cdrom_id, collect, create_floppy_devices, edd_id,
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| 152 | firmware.sh, fstab_import, path_id, scsi_id, udevadm, udevd,
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[3a34893] | 153 | usb_id, write_cd_rules, and write_net_rules</seg>
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[5f7456b] | 154 | <seg>libudev.{a,so}</seg>
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[fe05b08] | 155 | <seg>/etc/udev, /lib/udev, /lib/firmware</seg>
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[ddd5542] | 156 | </seglistitem>
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| 157 | </segmentedlist>
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| 158 |
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| 159 | <variablelist>
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| 160 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 161 | <?dbfo list-presentation="list"?>
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| 162 | <?dbhtml list-presentation="table"?>
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| 163 |
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[d2c332bc] | 164 | <varlistentry id="ata_id">
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| 165 | <term><command>ata_id</command></term>
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| 166 | <listitem>
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| 167 | <para>Provides Udev with a unique string and
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| 168 | additional information (uuid, label) for an ATA drive</para>
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| 169 | <indexterm zone="ch-system-udev ata_id">
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| 170 | <primary sortas="b-ata_id">ata_id</primary>
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| 171 | </indexterm>
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| 172 | </listitem>
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| 173 | </varlistentry>
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| 174 |
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| 175 | <varlistentry id="cdrom_id">
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| 176 | <term><command>cdrom_id</command></term>
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| 177 | <listitem>
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| 178 | <para>Provides Udev with the capabilities of a
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| 179 | CD-ROM or DVD-ROM drive</para>
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| 180 | <indexterm zone="ch-system-udev cdrom_id">
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| 181 | <primary sortas="b-cdrom_id">cdrom_id</primary>
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| 182 | </indexterm>
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| 183 | </listitem>
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| 184 | </varlistentry>
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| 185 |
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[61e63d3] | 186 | <varlistentry id="collect">
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| 187 | <term><command>collect</command></term>
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| 188 | <listitem>
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| 189 | <para>Given an ID for the current uevent and a list of
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| 190 | IDs (for all target uevents), registers the current ID
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| 191 | and indicates whether all target IDs have been registered</para>
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| 192 | <indexterm zone="ch-system-udev collect">
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| 193 | <primary sortas="b-collect">collect</primary>
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| 194 | </indexterm>
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| 195 | </listitem>
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| 196 | </varlistentry>
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| 197 |
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[d2c332bc] | 198 | <varlistentry id="create_floppy_devices">
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| 199 | <term><command>create_floppy_devices</command></term>
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[ddd5542] | 200 | <listitem>
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[d2c332bc] | 201 | <para>Creates all possible floppy devices based on the CMOS type</para>
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| 202 | <indexterm zone="ch-system-udev create_floppy_devices">
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| 203 | <primary sortas="b-create_floppy_devices">create_floppy_devices</primary>
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[ddd5542] | 204 | </indexterm>
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| 205 | </listitem>
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| 206 | </varlistentry>
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| 207 |
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[d2c332bc] | 208 | <varlistentry id="edd_id">
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| 209 | <term><command>edd_id</command></term>
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[ddd5542] | 210 | <listitem>
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[d2c332bc] | 211 | <para>Provides Udev with the EDD ID for a BIOS disk drive</para>
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| 212 | <indexterm zone="ch-system-udev edd_id">
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| 213 | <primary sortas="b-edd_id">edd_id</primary>
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[ddd5542] | 214 | </indexterm>
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| 215 | </listitem>
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| 216 | </varlistentry>
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| 217 |
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[2791a8e] | 218 | <varlistentry id="firmware.sh">
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| 219 | <term><command>firmware.sh</command></term>
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[ddd5542] | 220 | <listitem>
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[d2c332bc] | 221 | <para>Uploads firmware to devices</para>
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[2791a8e] | 222 | <indexterm zone="ch-system-udev firmware.sh">
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| 223 | <primary sortas="b-firmware.sh">firmware.sh</primary>
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[d2c332bc] | 224 | </indexterm>
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| 225 | </listitem>
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| 226 | </varlistentry>
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| 227 |
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[61e63d3] | 228 | <varlistentry id="fstab_import">
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| 229 | <term><command>fstab_import</command></term>
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| 230 | <listitem>
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| 231 | <para>Finds an entry in <filename>/etc/fstab</filename> that
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| 232 | matches the current device, and provides its information to
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| 233 | Udev</para>
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| 234 | <indexterm zone="ch-system-udev fstab_import">
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| 235 | <primary sortas="b-fstab_import">fstab_import</primary>
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| 236 | </indexterm>
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| 237 | </listitem>
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| 238 | </varlistentry>
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| 239 |
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[7d6d34b] | 240 | <varlistentry id="path_id">
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| 241 | <term><command>path_id</command></term>
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| 242 | <listitem>
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[9058aa1] | 243 | <para>Provides the shortest possible unique hardware path to a
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[7d6d34b] | 244 | device</para>
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| 245 | <indexterm zone="ch-system-udev path_id">
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| 246 | <primary sortas="b-path_id">path_id</primary>
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| 247 | </indexterm>
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| 248 | </listitem>
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| 249 | </varlistentry>
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| 250 |
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[d2c332bc] | 251 | <varlistentry id="scsi_id">
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| 252 | <term><command>scsi_id</command></term>
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| 253 | <listitem>
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| 254 | <para>Provides Udev with a unique SCSI identifier
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| 255 | based on the data returned from sending a SCSI INQUIRY command to
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| 256 | the specified device</para>
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| 257 | <indexterm zone="ch-system-udev scsi_id">
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| 258 | <primary sortas="b-scsi_id">scsi_id</primary>
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[ddd5542] | 259 | </indexterm>
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| 260 | </listitem>
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| 261 | </varlistentry>
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| 262 |
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[61e63d3] | 263 | <varlistentry id="udevadm">
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| 264 | <term><command>udevadm</command></term>
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[ddd5542] | 265 | <listitem>
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[61e63d3] | 266 | <para>Generic udev administration tool: controls the udevd daemon,
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| 267 | provides info from the Udev database, monitors uevents, waits for
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| 268 | uevents to finish, tests Udev configuration, and triggers uevents
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| 269 | for a given device</para>
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| 270 | <indexterm zone="ch-system-udev udevadm">
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| 271 | <primary sortas="b-udevadm">udevadm</primary>
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[ddd5542] | 272 | </indexterm>
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| 273 | </listitem>
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| 274 | </varlistentry>
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| 275 |
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| 276 | <varlistentry id="udevd">
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| 277 | <term><command>udevd</command></term>
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| 278 | <listitem>
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[d2c332bc] | 279 | <para>A daemon that listens for uevents on the netlink socket,
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| 280 | creates devices and runs the configured external programs in
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| 281 | response to these uevents</para>
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[ddd5542] | 282 | <indexterm zone="ch-system-udev udevd">
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| 283 | <primary sortas="b-udevd">udevd</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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[d2c332bc] | 288 | <varlistentry id="usb_id">
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| 289 | <term><command>usb_id</command></term>
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[ddd5542] | 290 | <listitem>
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[d2c332bc] | 291 | <para>Provides Udev with information about USB
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| 292 | devices</para>
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| 293 | <indexterm zone="ch-system-udev usb_id">
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| 294 | <primary sortas="b-usb_id">usb_id</primary>
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[ddd5542] | 295 | </indexterm>
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| 296 | </listitem>
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| 297 | </varlistentry>
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| 298 |
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[2791a8e] | 299 | <varlistentry id="write_cd_rules">
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| 300 | <term><command>write_cd_rules</command></term>
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| 301 | <listitem>
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| 302 | <para>A script which generates Udev rules to provide stable names for
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| 303 | optical drives (see also <xref linkend="ch-scripts-symlinks"/>)</para>
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| 304 | <indexterm zone="ch-system-udev write_cd_rules">
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| 305 | <primary sortas="b-write_cd_rules">write_cd_rules</primary>
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| 306 | </indexterm>
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| 307 | </listitem>
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| 308 | </varlistentry>
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| 309 |
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| 310 | <varlistentry id="write_net_rules">
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| 311 | <term><command>write_net_rules</command></term>
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| 312 | <listitem>
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| 313 | <para>A script which generates rules to provide stable names for
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| 314 | network interfaces (see also <xref linkend="ch-scripts-network"/>)
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| 315 | </para>
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| 316 | <indexterm zone="ch-system-udev write_net_rules">
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| 317 | <primary sortas="b-write_net_rules">write_net_rules</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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[166a9db] | 322 | <varlistentry id="libudev">
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[5f7456b] | 323 | <term><filename class="libraryfile">libudev</filename></term>
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[166a9db] | 324 | <listitem>
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| 325 | <para>A library interface to udev device information</para>
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| 326 | <indexterm zone="ch-system-udev libudev">
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| 327 | <primary sortas="c-libudev">libudev</primary>
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| 328 | </indexterm>
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| 329 | </listitem>
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| 330 | </varlistentry>
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| 331 |
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[ddd5542] | 332 | <varlistentry id="etc-udev">
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| 333 | <term><filename class="directory">/etc/udev</filename></term>
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| 334 | <listitem>
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[9058aa1] | 335 | <para>Contains Udev configuration files,
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[ddd5542] | 336 | device permissions, and rules for device naming</para>
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| 337 | <indexterm zone="ch-system-udev etc-udev">
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| 338 | <primary sortas="e-/etc/udev">/etc/udev</primary>
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| 339 | </indexterm>
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| 340 | </listitem>
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| 341 | </varlistentry>
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| 342 |
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| 343 | </variablelist>
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| 344 |
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| 345 | </sect2>
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[9dfc02f] | 346 |
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| 347 | </sect1>
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