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| 2 | <!DOCTYPE appendix 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 | <appendix id="appendixd-common" xreflabel="Appendix D">
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| 9 | <?dbhtml dir="appendixd"?>
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| 10 | <?dbhtml filename="rationale-common.html"?>
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| 11 |
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| 12 | <title>Package Rationale</title>
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| 13 |
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| 14 | <para>CLFS includes many packages, a number of which might not necessarily
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| 15 | be required for a "minimal" system, but still considered very useful. The
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| 16 | purpose of this page is to list the reasoning for each package's inclusion
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| 17 | in the book.</para>
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| 18 |
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| 19 | <itemizedlist>
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| 20 |
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| 21 | <listitem>
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| 22 | <para>ACL</para>
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| 23 | <para>The ACL package allows usage and setting of POSIX Access Control
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| 24 | Lists. It can be used by several other packages in CLFS, such as Coreutils
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| 25 | and Systemd.</para>
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| 26 | </listitem>
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| 27 |
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| 28 | <listitem>
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| 29 | <para>Attr</para>
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| 30 | <para>Attr allows setting and viewing extended attributes of filesystem
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| 31 | objects. It is required by Systemd..</para>
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| 32 | </listitem>
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| 33 |
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| 34 | <listitem>
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| 35 | <para>Autoconf</para>
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| 36 | <para>The Autoconf package contains programs for producing shell scripts
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| 37 | that can automatically configure source code. This is useful for software
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| 38 | developers, as well as anyone who wants to install packages that don't
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| 39 | come with a configure script, such as some of the packages in CBLFS.</para>
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| 40 | </listitem>
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| 41 |
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| 42 | <listitem>
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| 43 | <para>Automake</para>
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| 44 | <para>The Automake package contains programs for generating Makefiles for use with Autoconf. This can be useful to software developers.</para>
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| 45 | </listitem>
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| 46 |
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| 47 | <listitem>
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| 48 | <para>Bash</para>
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| 49 | <para>This package contains the Bourne-Again SHell. A shell is an
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| 50 | important component of a Linux system, as there must be some way of
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| 51 | allowing the users to enter commands.</para>
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| 52 | </listitem>
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| 53 |
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| 54 | <listitem>
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| 55 | <para>Bc</para>
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| 56 | <para>This package contains a precision calculator. The Linux kernel
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| 57 | uses Bc to render the timeconst header.</para>
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| 58 | </listitem>
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| 59 |
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| 60 |
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| 61 | <listitem>
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| 62 | <para>Binutils</para>
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| 63 | <para>This package contains programs for handling object files. The
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| 64 | programs in this package are needed for compiling most of the packages
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| 65 | in CLFS.</para>
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| 66 | </listitem>
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| 67 |
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| 68 | <listitem>
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| 69 | <para>Bison</para>
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| 70 | <para>This package contains programs that are required by several packages in CLFS.</para>
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| 71 | </listitem>
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| 72 |
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| 73 | <listitem>
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| 74 | <para>Bzip2</para>
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| 75 | <para>The programs in this package are useful for compressing files to
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| 76 | reduce size. They are also needed to uncompress tarballs for many
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| 77 | CLFS packages.</para>
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| 78 | </listitem>
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| 79 |
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| 80 | <listitem>
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| 81 | <para>CLFS-Boot-scripts</para>
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| 82 | <para>This package contains a number of scripts that run at boottime,
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| 83 | performing essential tasks such as mounting/checking filesystems and
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| 84 | starting the network interface.</para>
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| 85 | </listitem>
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| 86 |
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| 87 | <listitem>
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| 88 | <para>Check</para>
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| 89 | <para>This package contains a test harness for other programs. It is
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| 90 | used for some packages' testsuites.</para>
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| 91 | </listitem>
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| 92 |
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| 93 | <listitem>
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| 94 | <para>CLooG</para>
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| 95 | <para>This package is used by GCC.</para>
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| 96 | </listitem>
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| 97 |
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| 98 | <listitem>
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| 99 | <para>Coreutils</para>
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| 100 | <para>This package contains many basic command-line file-management
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| 101 | tools, required for installation of every package in CLFS.</para>
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| 102 | </listitem>
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| 103 |
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| 104 | <listitem>
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| 105 | <para>D-Bus</para>
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| 106 | <para>D-Bus is a message bus system, which allows applications to
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| 107 | communicate to each other. It is required by Systemd.</para>
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| 108 | </listitem>
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| 109 |
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| 110 | <listitem>
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| 111 | <para>DejaGNU</para>
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| 112 | <para>This package is needed for the testsuites of several packages,
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| 113 | especially GCC and Binutils.</para>
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| 114 | </listitem>
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| 115 |
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| 116 | <listitem>
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| 117 | <para>DHCPCD</para>
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| 118 | <para>This package allows for automatic configuration of network
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| 119 | interfaces from a DHCP server. It (or some other package providing a
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| 120 | DHCP client is needed to connect to a DHCP server.</para>
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| 121 | </listitem>
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| 122 |
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| 123 | <listitem>
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| 124 | <para>Diffutils</para>
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| 125 | <para>This package contains programs to compare files, and can also
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| 126 | be used to create patches. It is required by the installation procedures of
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| 127 | many CLFS packages.</para>
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| 128 | </listitem>
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| 129 |
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| 130 | <listitem>
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| 131 | <para>Glibc</para>
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| 132 | <para>Any dynamically-linked C program (which is nearly everything
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| 133 | in CLFS) needs a C library to compile and run.</para>
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| 134 | </listitem>
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| 135 |
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| 136 | <listitem>
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| 137 | <para>Eudev</para>
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| 138 | <para>This is a package that allows for dynamic creation of device nodes.
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| 139 | It is a fork of Udev, which is now part of Systemd. It is still
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| 140 | used for the "Boot" method in the temp-system, as Systemd is not needed
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| 141 | there.</para>
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| 142 | </listitem>
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| 143 |
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| 144 | <listitem>
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| 145 | <para>Expect</para>
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| 146 | <para>This package is needed for the testsuites for several packages.</para>
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| 147 | </listitem>
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| 148 |
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| 149 | <listitem>
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| 150 | <para>E2fsprogs</para>
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| 151 | <para>The programs in this package are used for the creation and
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| 152 | maintenance of ext2/3/4 filesystems.</para>
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| 153 | </listitem>
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| 154 |
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| 155 | <listitem>
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| 156 | <para>File</para>
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| 157 | <para>This package contains a program that determines the type of
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| 158 | a given file. It is needed by some CLFS packages.</para>
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| 159 | </listitem>
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| 160 |
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| 161 | <listitem>
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| 162 | <para>Findutils</para>
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| 163 | <para>This package contains programs for finding files based on certain
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| 164 | criteria, and optionally performing commands on them. Used by the
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| 165 | installation procedures of many CLFS packages.</para>
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| 166 | </listitem>
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| 167 |
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| 168 | <listitem>
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| 169 | <para>Flex</para>
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| 170 | <para>This package contains a tool for generating text scanners. It is
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| 171 | used by multiple packages in CLFS</para>
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| 172 | </listitem>
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| 173 |
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| 174 | <listitem>
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| 175 | <para>Gawk</para>
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| 176 | <para>This package contains programs for manipulating text files, using
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| 177 | the AWK language. It is used by the installation procedures of many
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| 178 | packages in CLFS.</para>
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| 179 | </listitem>
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| 180 |
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| 181 | <listitem>
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| 182 | <para>Gcc</para>
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| 183 | <para>This package contains a C compiler, which is required to compile
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| 184 | most of the packages in CLFS.</para>
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| 185 | </listitem>
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| 186 |
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| 187 | <listitem>
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| 188 | <para>GDBM</para>
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| 189 | <para>This package contains the GNU Database Manager library. It is used
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| 190 | by one other CLFS package, Man-DB.</para>
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| 191 | </listitem>
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| 192 |
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| 193 | <listitem>
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| 194 | <para>Gettext</para>
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| 195 | <para>A tool that allows programmers to easily implement i18n
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| 196 | (internationalization) in their programs. It is a required dependency
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| 197 | for a number of packages</para>
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| 198 | </listitem>
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| 199 |
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| 200 | <listitem>
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| 201 | <para>GMP</para>
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| 202 | <para>This package is required by GCC.</para>
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| 203 | </listitem>
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| 204 |
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| 205 | <listitem>
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| 206 | <para>Gperf</para>
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| 207 | <para>This package is required by Systemd.</para>
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| 208 | </listitem>
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| 209 |
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| 210 | <listitem>
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| 211 | <para>Grep</para>
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| 212 | <para>This package contains programs for searching for text in files.
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| 213 | These programs are required by many packages in CLFS.</para>
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| 214 | </listitem>
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| 215 |
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| 216 | <listitem>
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| 217 | <para>Groff</para>
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| 218 | <para>This package is required by Man.</para>
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| 219 | </listitem>
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| 220 |
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| 221 | <listitem>
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| 222 | <para>Gzip</para>
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| 223 | <para>Useful for compressing files to reduce size. It is also needed to
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| 224 | uncompress tarballs for many CLFS packages</para>
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| 225 | </listitem>
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| 226 |
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| 227 | <listitem>
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| 228 | <para>Iana-Etc</para>
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| 229 | <para>This package provides the <filename>/etc/services</filename> and
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| 230 | <filename>/etc/protocols</filename> files. These files map port names to
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| 231 | port numbers as well as protocol names to their corresponding numbers.
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| 232 | These files are essential for many network based programs to work properly.</para>
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| 233 | </listitem>
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| 234 |
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| 235 | <listitem>
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| 236 | <para>Intltool</para>
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| 237 | <para>This package is required by Systemd.</para>
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| 238 | </listitem>
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| 239 |
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| 240 | <listitem>
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| 241 | <para>IProute2</para>
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| 242 | <para>This package contains programs for administering network interfaces.</para>
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| 243 | </listitem>
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| 244 |
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| 245 | <listitem>
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| 246 | <para>IPutils</para>
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| 247 | <para>This package contains several basic network-management tools.</para>
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| 248 | </listitem>
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| 249 |
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| 250 | <listitem>
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| 251 | <para>ISL</para>
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| 252 | <para>This package is required by CLooG.</para>
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| 253 | </listitem>
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| 254 |
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| 255 | <listitem>
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| 256 | <para>Kbd</para>
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| 257 | <para>Contains keytable files and keyboard utilities compatible with the
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| 258 | Linux kernel.</para>
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| 259 | </listitem>
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| 260 |
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| 261 | <listitem>
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| 262 | <para>Kmod</para>
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| 263 | <para>This package contains programs that assist in loading an unloading
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| 264 | kernel modules.</para>
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| 265 | </listitem>
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| 266 |
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| 267 | <listitem>
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| 268 | <para>Less</para>
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| 269 | <para>A program that lets you view text files one page at a time.
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| 270 | Used by Man for displaying manpages.</para>
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| 271 | </listitem>
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| 272 |
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| 273 | <listitem>
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| 274 | <para>Libcap</para>
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| 275 | <para>This package is required by Systemd.</para>
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| 276 | </listitem>
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| 277 |
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| 278 | <listitem>
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| 279 | <para>Libpipeline</para>
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| 280 | <para>The Libpipeline package contains a library for manipulating
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| 281 | pipelines of subprocesses in a flexible and convenient way. It is
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| 282 | required by the Man-DB package.</para>
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| 283 | </listitem>
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| 284 |
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| 285 | <listitem>
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| 286 | <para>Libtool</para>
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| 287 | <para>The Libtool package contains the GNU generic library support
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| 288 | script. It is used by some CLFS packages.</para>
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| 289 | </listitem>
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| 290 |
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| 291 | <listitem>
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| 292 | <para>Linux-Headers</para>
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| 293 | <para>This package consists of santized headers from the Linux Kernel.
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| 294 | These headers are required for Glibc to compile.</para>
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| 295 | </listitem>
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| 296 |
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| 297 | <listitem>
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| 298 | <para>Linux Kernel</para>
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| 299 | <para>The Linux operating system.</para>
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| 300 | </listitem>
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| 301 |
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| 302 | <listitem>
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| 303 | <para>M4</para>
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| 304 | <para>This package contains a macro processor. It is required by several
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| 305 | CLFS packages, including Bison.</para>
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| 306 | </listitem>
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| 307 |
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| 308 | <listitem>
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| 309 | <para>Make</para>
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| 310 | <para>Required for installation of most CLFS packages</para>
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| 311 | </listitem>
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| 312 |
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| 313 | <listitem>
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| 314 | <para>Man</para>
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| 315 | <para>Used for viewing manpages</para>
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| 316 | </listitem>
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| 317 |
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| 318 | <listitem>
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| 319 | <para>Man-Pages</para>
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| 320 | <para>A number of useful manpages, not supplied by other packages</para>
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| 321 | </listitem>
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| 322 |
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| 323 | <listitem>
|
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| 324 | <para>MPC</para>
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| 325 | <para>This package is required by GCC.</para>
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| 326 | </listitem>
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| 327 |
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| 328 | <listitem>
|
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| 329 | <para>MPFR</para>
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| 330 | <para>This package is required by GCC.</para>
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| 331 | </listitem>
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| 332 |
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| 333 | <listitem>
|
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| 334 | <para>Ncurses</para>
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| 335 | <para>Needed by several packages in CLFS, such as Vim, Bash, and Less</para>
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| 336 | </listitem>
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| 337 |
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| 338 | <listitem>
|
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| 339 | <para>Patch</para>
|
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| 340 | <para>Used for applying patches in several CLFS packages</para>
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| 341 | </listitem>
|
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| 342 |
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| 343 | <listitem>
|
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| 344 | <para>Perl</para>
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| 345 | <para>The Perl package contains the Practical Extraction and Report
|
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| 346 | Language. It is required by several CLFS packages.</para>
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| 347 | </listitem>
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| 348 |
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| 349 | <listitem>
|
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| 350 | <para>Pkg-config-lite</para>
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| 351 | <para>Needed by E2fsprogs</para>
|
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| 352 | </listitem>
|
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| 353 |
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| 354 | <listitem>
|
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| 355 | <para>Procps-ng</para>
|
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| 356 | <para>Provides a number of small, useful utilities that give information
|
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| 357 | about the <filename class="directory">/proc</filename> filesystem.</para>
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| 358 | </listitem>
|
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| 359 |
|
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| 360 | <listitem>
|
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| 361 | <para>Psmisc</para>
|
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| 362 | <para>Provides more utilties that give information about the
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| 363 | <filename class="directory">/proc</filename> filesystem.</para>
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| 364 | </listitem>
|
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| 365 |
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| 366 | <listitem>
|
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| 367 | <para>Readline</para>
|
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| 368 | <para>The Readline library provides a set of functions for use by
|
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| 369 | applications that allow users to edit command lines as they are typed
|
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| 370 | in. This is essential for input in programs like <command>bash</command>
|
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| 371 | to work properly.</para>
|
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| 372 | </listitem>
|
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| 373 |
|
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| 374 | <listitem>
|
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| 375 | <para>Sed</para>
|
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| 376 | <para>This package contains a stream editor. It is used in the
|
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| 377 | installation procedures of most CLFS packages.</para>
|
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| 378 | </listitem>
|
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| 379 |
|
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| 380 | <listitem>
|
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| 381 | <para>Shadow</para>
|
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| 382 | <para>This package contains programs that assist in the administration
|
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| 383 | of users and groups, and passwords.</para>
|
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| 384 | </listitem>
|
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| 385 |
|
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| 386 | <listitem>
|
|---|
| 387 | <para>Systemd</para>
|
|---|
| 388 | <para>Systemd provides the init daemon for the system, as well as Udev,
|
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| 389 | which dynamically creates device nodes.</para>
|
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| 390 | </listitem>
|
|---|
| 391 |
|
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| 392 | <listitem>
|
|---|
| 393 | <para>Tar</para>
|
|---|
| 394 | <para>Required to unpack the tar archives in which all CLFS packages
|
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| 395 | are distributed</para>
|
|---|
| 396 | </listitem>
|
|---|
| 397 |
|
|---|
| 398 | <listitem>
|
|---|
| 399 | <para>Tcl</para>
|
|---|
| 400 | <para>Needed for the testsuites of several packages</para>
|
|---|
| 401 | </listitem>
|
|---|
| 402 |
|
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| 403 | <listitem>
|
|---|
| 404 | <para>Texinfo</para>
|
|---|
| 405 | <para>This package contains programs for viewing, installing and
|
|---|
| 406 | converting info pages. It is used in the installation procedures
|
|---|
| 407 | of many CLFS packages.</para>
|
|---|
| 408 | </listitem>
|
|---|
| 409 |
|
|---|
| 410 | <listitem>
|
|---|
| 411 | <para>Util-linux</para>
|
|---|
| 412 | <para>The Util-linux package contains miscellaneous utility programs.
|
|---|
| 413 | Among them are utilities for handling file systems, consoles,
|
|---|
| 414 | partitions, and messages. It also includes libraries that are required
|
|---|
| 415 | by E2fsprogs.</para>
|
|---|
| 416 | </listitem>
|
|---|
| 417 |
|
|---|
| 418 | <listitem>
|
|---|
| 419 | <para>Vim</para>
|
|---|
| 420 | <para>The Vim package contains a text editor. Users may substitute Nano,
|
|---|
| 421 | Joe, Emacs, or whatever other editor they prefer.</para>
|
|---|
| 422 | </listitem>
|
|---|
| 423 |
|
|---|
| 424 | <listitem>
|
|---|
| 425 | <para>XML::Parser</para>
|
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| 426 | <para>This Perl module is required by Intltool.</para>
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| 427 | </listitem>
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| 428 |
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| 429 | <listitem>
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| 430 | <para>XZ Utils</para>
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| 431 | <para>Useful for compressing files to reduce size. Also needed to
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| 432 | uncompress tarballs for many CLFS packages</para>
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| 433 | </listitem>
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| 434 |
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| 435 | <listitem>
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| 436 | <para>Zlib</para>
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| 437 | <para>The Zlib package contains compression and decompression routines
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| 438 | used by some programs.</para>
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| 439 | </listitem>
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| 440 |
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| 441 | </itemizedlist>
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| 442 |
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| 443 | </appendix>
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