[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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[f70b664] | 35 | <seg>&udev-ch6-du;</seg>
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[ddd5542] | 36 | </seglistitem>
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| 37 | </segmentedlist>
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| 38 | </sect2>
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[9dfc02f] | 39 |
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[ddd5542] | 40 | <sect2 role="installation">
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| 41 | <title>Installation of Udev</title>
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| 42 |
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[7d6d34b] | 43 | <para>The udev-config tarball contains LFS-specific files used to configure
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[e1060de] | 44 | Udev. Unpack it into the Udev source directory:</para>
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[7d6d34b] | 45 |
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[0445a3d] | 46 | <screen><userinput remap="pre">tar -xvf ../&udev-config;.tar.bz2</userinput></screen>
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[7d6d34b] | 47 |
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[d2c332bc] | 48 | <para>Create some devices and directories that Udev cannot handle due to
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[61e63d3] | 49 | them being required very early in the boot process, or by Udev itself:</para>
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[d2c332bc] | 50 |
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[7eae78f] | 51 | <screen><userinput remap="install">install -dv /lib/{firmware,udev/devices/pts}
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[f2ca25f] | 52 | mknod -m0666 /lib/udev/devices/null c 1 3</userinput></screen>
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[d2c332bc] | 53 |
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[166a9db] | 54 | <para>Prepare the package for compilation:</para>
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[81fd230] | 55 |
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[3a34893] | 56 | <!-- Note that "libdir=/usr/lib64" would be required for multilib. -->
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[6b13ebc6] | 57 | <screen><userinput remap="configure">BLKID_CFLAGS="-I/usr/include/blkid" \
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| 58 | BLKID_LIBS="-L/lib -lblkid" \
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| 59 | KMOD_CFLAGS="-I/usr/include" \
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| 60 | KMOD_LIBS="-L/lib -lkmod" \
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| 61 | ./configure --prefix=/usr \
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| 62 | --with-rootprefix='' \
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| 63 | --bindir=/sbin \
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| 64 | --sysconfdir=/etc \
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| 65 | --libexecdir=/lib \
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| 66 | --enable-rule_generator \
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| 67 | --disable-introspection \
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| 68 | --disable-keymap \
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| 69 | --disable-gudev \
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| 70 | --with-usb-ids-path=no \
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| 71 | --with-pci-ids-path=no \
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| 72 | --with-systemdsystemunitdir=no</userinput></screen>
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[3a34893] | 73 |
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| 74 | <variablelist>
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| 75 | <title>The meaning of the new configure options</title>
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| 76 |
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[f70b664] | 77 | <!-- Note that libexecdir *MUST* stay /lib, even on a 64-bit
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| 78 | / multilib system where udev is compiled for 64-bit. The udev
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| 79 | configure system automatically adds "udev" onto this path, and other
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| 80 | packages require /lib/udev; the udev maintainers have
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| 81 | said this is part of the udev API. -->
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[3a34893] | 82 | <varlistentry>
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[f70b664] | 83 | <term><parameter>--libexecdir=/lib</parameter></term>
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[3a34893] | 84 | <listitem>
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[f70b664] | 85 | <para>This controls where Udev-internal rules and helper programs
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| 86 | are installed.</para>
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[3a34893] | 87 | </listitem>
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| 88 | </varlistentry>
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| 89 |
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| 90 | <varlistentry>
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[f70b664] | 91 | <term><parameter>--enable-rule_generator</parameter></term>
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[3a34893] | 92 | <listitem>
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[f70b664] | 93 | <para>This allows persistent rules to be generated for network and
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| 94 | optical media devices</para>
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[3a34893] | 95 | </listitem>
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| 96 | </varlistentry>
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| 97 |
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| 98 | <varlistentry>
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[f70b664] | 99 | <term><parameter>--disable-* and --with-*</parameter></term>
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[3a34893] | 100 | <listitem>
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[283fea13] | 101 | <para>These options prevent Udev from installing helper programs and
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[3a34893] | 102 | other extras which require more external libraries. These libraries
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| 103 | are not part of the base LFS system. See the Udev
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| 104 | <filename>README</filename> file for more information.</para>
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| 105 | </listitem>
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| 106 | </varlistentry>
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| 107 | </variablelist>
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[ddd5542] | 108 |
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[166a9db] | 109 | <para>Compile the package:</para>
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[0445a3d] | 110 |
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[166a9db] | 111 | <screen><userinput remap="make">make</userinput></screen>
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[81fd230] | 112 |
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[281b7d9] | 113 | <para>Test the package.</para>
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| 114 |
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| 115 | <screen><userinput remap="test">make check</userinput></screen>
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[c226182] | 116 |
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[ddd5542] | 117 | <para>Install the package:</para>
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[9dfc02f] | 118 |
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[166a9db] | 119 | <screen><userinput remap="install">make install</userinput></screen>
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[09043c0] | 120 |
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[7ae8d79] | 121 | <para>Remove an empty documentation directory:</para>
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| 122 |
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[a2f7ad07] | 123 | <screen><userinput remap="install">rmdir -v /usr/share/doc/udev</userinput></screen>
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[7ae8d79] | 124 |
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[9faa3e2] | 125 | <para>Now install the LFS-specific custom rules files:</para>
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[7eac3e32] | 126 |
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[0445a3d] | 127 | <screen><userinput remap="install">cd &udev-config;
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[7e6fb44] | 128 | make install</userinput></screen>
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| 129 |
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| 130 | <para>Install the documentation that explains the LFS-specific rules
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| 131 | files:</para>
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| 132 |
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[0445a3d] | 133 | <screen><userinput remap="install">make install-doc</userinput></screen>
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[7e6fb44] | 134 |
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[ddd5542] | 135 | </sect2>
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| 136 |
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| 137 | <sect2 id="contents-udev" role="content">
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| 138 | <title>Contents of Udev</title>
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| 139 |
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| 140 | <segmentedlist>
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| 141 | <segtitle>Installed programs</segtitle>
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[2791a8e] | 142 | <segtitle>Installed libraries</segtitle>
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[fe05b08] | 143 | <segtitle>Installed directories</segtitle>
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[ddd5542] | 144 |
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| 145 | <seglistitem>
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[61e63d3] | 146 | <seg>ata_id, cdrom_id, collect, create_floppy_devices, edd_id,
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| 147 | firmware.sh, fstab_import, path_id, scsi_id, udevadm, udevd,
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[3a34893] | 148 | usb_id, write_cd_rules, and write_net_rules</seg>
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[5f7456b] | 149 | <seg>libudev.{a,so}</seg>
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[3119ddc] | 150 | <seg>/etc/udev, /lib/udev, /lib/firmware, /usr/share/doc/udev-config,
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| 151 | /usr/share/gtk-doc/html/libudev</seg>
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[ddd5542] | 152 | </seglistitem>
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| 153 | </segmentedlist>
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| 154 |
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| 155 | <variablelist>
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| 156 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 157 | <?dbfo list-presentation="list"?>
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| 158 | <?dbhtml list-presentation="table"?>
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| 159 |
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[d2c332bc] | 160 | <varlistentry id="ata_id">
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| 161 | <term><command>ata_id</command></term>
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| 162 | <listitem>
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| 163 | <para>Provides Udev with a unique string and
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| 164 | additional information (uuid, label) for an ATA drive</para>
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| 165 | <indexterm zone="ch-system-udev ata_id">
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| 166 | <primary sortas="b-ata_id">ata_id</primary>
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| 167 | </indexterm>
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| 168 | </listitem>
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| 169 | </varlistentry>
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| 170 |
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| 171 | <varlistentry id="cdrom_id">
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| 172 | <term><command>cdrom_id</command></term>
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| 173 | <listitem>
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| 174 | <para>Provides Udev with the capabilities of a
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| 175 | CD-ROM or DVD-ROM drive</para>
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| 176 | <indexterm zone="ch-system-udev cdrom_id">
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| 177 | <primary sortas="b-cdrom_id">cdrom_id</primary>
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| 178 | </indexterm>
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| 179 | </listitem>
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| 180 | </varlistentry>
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| 181 |
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[61e63d3] | 182 | <varlistentry id="collect">
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| 183 | <term><command>collect</command></term>
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| 184 | <listitem>
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| 185 | <para>Given an ID for the current uevent and a list of
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| 186 | IDs (for all target uevents), registers the current ID
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| 187 | and indicates whether all target IDs have been registered</para>
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| 188 | <indexterm zone="ch-system-udev collect">
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| 189 | <primary sortas="b-collect">collect</primary>
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| 190 | </indexterm>
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| 191 | </listitem>
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| 192 | </varlistentry>
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| 193 |
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[d2c332bc] | 194 | <varlistentry id="create_floppy_devices">
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| 195 | <term><command>create_floppy_devices</command></term>
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[ddd5542] | 196 | <listitem>
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[d2c332bc] | 197 | <para>Creates all possible floppy devices based on the CMOS type</para>
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| 198 | <indexterm zone="ch-system-udev create_floppy_devices">
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| 199 | <primary sortas="b-create_floppy_devices">create_floppy_devices</primary>
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[ddd5542] | 200 | </indexterm>
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| 201 | </listitem>
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| 202 | </varlistentry>
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| 203 |
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[d2c332bc] | 204 | <varlistentry id="edd_id">
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| 205 | <term><command>edd_id</command></term>
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[ddd5542] | 206 | <listitem>
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[d2c332bc] | 207 | <para>Provides Udev with the EDD ID for a BIOS disk drive</para>
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| 208 | <indexterm zone="ch-system-udev edd_id">
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| 209 | <primary sortas="b-edd_id">edd_id</primary>
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[ddd5542] | 210 | </indexterm>
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| 211 | </listitem>
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| 212 | </varlistentry>
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| 213 |
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[2791a8e] | 214 | <varlistentry id="firmware.sh">
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| 215 | <term><command>firmware.sh</command></term>
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[ddd5542] | 216 | <listitem>
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[d2c332bc] | 217 | <para>Uploads firmware to devices</para>
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[2791a8e] | 218 | <indexterm zone="ch-system-udev firmware.sh">
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| 219 | <primary sortas="b-firmware.sh">firmware.sh</primary>
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[d2c332bc] | 220 | </indexterm>
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| 221 | </listitem>
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| 222 | </varlistentry>
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| 223 |
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[61e63d3] | 224 | <varlistentry id="fstab_import">
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| 225 | <term><command>fstab_import</command></term>
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| 226 | <listitem>
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| 227 | <para>Finds an entry in <filename>/etc/fstab</filename> that
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| 228 | matches the current device, and provides its information to
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| 229 | Udev</para>
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| 230 | <indexterm zone="ch-system-udev fstab_import">
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| 231 | <primary sortas="b-fstab_import">fstab_import</primary>
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| 232 | </indexterm>
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| 233 | </listitem>
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| 234 | </varlistentry>
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| 235 |
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[7d6d34b] | 236 | <varlistentry id="path_id">
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| 237 | <term><command>path_id</command></term>
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| 238 | <listitem>
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[9058aa1] | 239 | <para>Provides the shortest possible unique hardware path to a
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[7d6d34b] | 240 | device</para>
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| 241 | <indexterm zone="ch-system-udev path_id">
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| 242 | <primary sortas="b-path_id">path_id</primary>
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| 243 | </indexterm>
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| 244 | </listitem>
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| 245 | </varlistentry>
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| 246 |
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[d2c332bc] | 247 | <varlistentry id="scsi_id">
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| 248 | <term><command>scsi_id</command></term>
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| 249 | <listitem>
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| 250 | <para>Provides Udev with a unique SCSI identifier
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| 251 | based on the data returned from sending a SCSI INQUIRY command to
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| 252 | the specified device</para>
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| 253 | <indexterm zone="ch-system-udev scsi_id">
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| 254 | <primary sortas="b-scsi_id">scsi_id</primary>
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[ddd5542] | 255 | </indexterm>
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| 256 | </listitem>
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| 257 | </varlistentry>
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| 258 |
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[61e63d3] | 259 | <varlistentry id="udevadm">
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| 260 | <term><command>udevadm</command></term>
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[ddd5542] | 261 | <listitem>
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[61e63d3] | 262 | <para>Generic udev administration tool: controls the udevd daemon,
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| 263 | provides info from the Udev database, monitors uevents, waits for
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| 264 | uevents to finish, tests Udev configuration, and triggers uevents
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| 265 | for a given device</para>
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| 266 | <indexterm zone="ch-system-udev udevadm">
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| 267 | <primary sortas="b-udevadm">udevadm</primary>
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[ddd5542] | 268 | </indexterm>
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| 269 | </listitem>
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| 270 | </varlistentry>
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| 271 |
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| 272 | <varlistentry id="udevd">
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| 273 | <term><command>udevd</command></term>
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| 274 | <listitem>
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[d2c332bc] | 275 | <para>A daemon that listens for uevents on the netlink socket,
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| 276 | creates devices and runs the configured external programs in
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| 277 | response to these uevents</para>
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[ddd5542] | 278 | <indexterm zone="ch-system-udev udevd">
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| 279 | <primary sortas="b-udevd">udevd</primary>
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| 280 | </indexterm>
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| 281 | </listitem>
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| 282 | </varlistentry>
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| 283 |
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[d2c332bc] | 284 | <varlistentry id="usb_id">
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| 285 | <term><command>usb_id</command></term>
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[ddd5542] | 286 | <listitem>
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[d2c332bc] | 287 | <para>Provides Udev with information about USB
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| 288 | devices</para>
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| 289 | <indexterm zone="ch-system-udev usb_id">
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| 290 | <primary sortas="b-usb_id">usb_id</primary>
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[ddd5542] | 291 | </indexterm>
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| 292 | </listitem>
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| 293 | </varlistentry>
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| 294 |
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[2791a8e] | 295 | <varlistentry id="write_cd_rules">
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| 296 | <term><command>write_cd_rules</command></term>
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| 297 | <listitem>
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| 298 | <para>A script which generates Udev rules to provide stable names for
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| 299 | optical drives (see also <xref linkend="ch-scripts-symlinks"/>)</para>
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| 300 | <indexterm zone="ch-system-udev write_cd_rules">
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| 301 | <primary sortas="b-write_cd_rules">write_cd_rules</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="write_net_rules">
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| 307 | <term><command>write_net_rules</command></term>
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| 308 | <listitem>
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| 309 | <para>A script which generates rules to provide stable names for
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| 310 | network interfaces (see also <xref linkend="ch-scripts-network"/>)
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| 311 | </para>
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| 312 | <indexterm zone="ch-system-udev write_net_rules">
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| 313 | <primary sortas="b-write_net_rules">write_net_rules</primary>
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| 314 | </indexterm>
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| 315 | </listitem>
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| 316 | </varlistentry>
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| 317 |
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[166a9db] | 318 | <varlistentry id="libudev">
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[5f7456b] | 319 | <term><filename class="libraryfile">libudev</filename></term>
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[166a9db] | 320 | <listitem>
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| 321 | <para>A library interface to udev device information</para>
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| 322 | <indexterm zone="ch-system-udev libudev">
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| 323 | <primary sortas="c-libudev">libudev</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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[ddd5542] | 328 | <varlistentry id="etc-udev">
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| 329 | <term><filename class="directory">/etc/udev</filename></term>
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| 330 | <listitem>
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[9058aa1] | 331 | <para>Contains Udev configuration files,
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[ddd5542] | 332 | device permissions, and rules for device naming</para>
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| 333 | <indexterm zone="ch-system-udev etc-udev">
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| 334 | <primary sortas="e-/etc/udev">/etc/udev</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 | </variablelist>
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| 340 |
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| 341 | </sect2>
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[9dfc02f] | 342 |
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| 343 | </sect1>
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