newxml/chapter06/gzip.xml

   1 <?xml version="1.0" encoding="ISO-8859-1"?>
   2 <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
   3   <!ENTITY % general-entities SYSTEM "../general.ent">
   4   %general-entities;
   5 ]>
   6 <sect1 id="ch-system-gzip" xreflabel="Gzip">
   7 <title>Gzip-&gzip-version;</title>
   8 <?dbhtml filename="gzip.html"?>
   9
  10 <indexterm zone="ch-system-gzip"><primary sortas="a-Gzip">Gzip</primary></indexterm>
  11
  12 <para>The Gzip package contains programs for compressing and decompressing
  13 files.</para>
  14
  15 <screen>&buildtime; 0.1 SBU
  16 &diskspace; 2.6 MB</screen>
  17
  18 <para>Gzip installation depends on: Bash, Binutils, Coreutils, Diffutils,
  19 GCC, Glibc, Grep, Make, Sed.</para>
  20
  21
  22
  23 <sect2>
  24 <title>Installation of Gzip</title>
  25
  26 <para>Prepare Gzip for compilation:</para>
  27
  28 <screen><userinput>./configure --prefix=/usr</userinput></screen>
  29
  30 <para>The <command>gzexe</command> script has the location of the
  31 <command>gzip</command> binary hard-wired into it. Because we later change
  32 the location of the binary, the following command ensures that the new
  33 location gets placed into the script:</para>
  34
  35 <screen><userinput>cp gzexe.in{,.backup}
  36 sed 's%"BINDIR"%/bin%' gzexe.in.backup &gt; gzexe.in</userinput></screen>
  37
  38 <para>Compile the package:</para>
  39
  40 <screen><userinput>make</userinput></screen>
  41
  42 <para>Install the package:</para>
  43
  44 <screen><userinput>make install</userinput></screen>
  45
  46 <para>Move the programs to the <filename class="directory">/bin</filename> directory:</para>
  47
  48 <screen><userinput>mv /usr/bin/gzip /bin
  49 rm /usr/bin/{gunzip,zcat}
  50 ln -s gzip /bin/gunzip
  51 ln -s gzip /bin/zcat
  52 ln -s gunzip /bin/uncompress</userinput></screen>
  53
  54 </sect2>
  55
  56
  57 <sect2 id="contents-gzip"><title>Contents of Gzip</title>
  58
  59 <para><emphasis>Installed programs</emphasis>: gunzip (link to gzip), gzexe,
  60 gzip, uncompress (link to gunzip), zcat (link to gzip), zcmp, zdiff,
  61 zegrep, zfgrep, zforce, zgrep, zless, zmore and znew</para>
  62
  63 </sect2>
  64
  65 <sect2><title>Short descriptions</title>
  66
  67 <indexterm zone="ch-system-gzip gunzip"><primary sortas="b-gunzip">gunzip</primary></indexterm>
  68 <para id="gunzip"><command>gunzip</command> decompresses gzipped files.</para>
  69
  70 <indexterm zone="ch-system-gzip gzexe"><primary sortas="b-gzexe">gzexe</primary></indexterm>
  71 <para id="gzexe"><command>gzexe</command> is used to create self-uncompressing
  72 executable files.</para>
  73
  74 <indexterm zone="ch-system-gzip gzip"><primary sortas="b-gzip">gzip</primary></indexterm>
  75 <para id="gzip"><command>gzip</command> compresses the given files, using
  76 Lempel-Ziv (LZ77) coding.</para>
  77
  78 <indexterm zone="ch-system-gzip zcat"><primary sortas="b-zcat">zcat</primary></indexterm>
  79 <para id="zcat"><command>zcat</command> uncompresses the given gzipped files to
  80 standard output.</para>
  81
  82 <indexterm zone="ch-system-gzip zcmp"><primary sortas="b-zcmp">zcmp</primary></indexterm>
  83 <para id="zcmp"><command>zcmp</command> runs cmp on gzipped files.</para>
  84
  85 <indexterm zone="ch-system-gzip zdiff"><primary sortas="b-zdiff">zdiff</primary></indexterm>
  86 <para id="zdiff"><command>zdiff</command> runs diff on gzipped files.</para>
  87
  88 <indexterm zone="ch-system-gzip zegrep"><primary sortas="b-zegrep">zegrep</primary></indexterm>
  89 <para id="zegrep"><command>zegrep</command> runs egrep on gzipped files.</para>
  90
  91 <indexterm zone="ch-system-gzip zfgrep"><primary sortas="b-zfgrep">zfgrep</primary></indexterm>
  92 <para id="zfgrep"><command>zfgrep</command> runs fgrep on gzipped files.</para>
  93
  94 <indexterm zone="ch-system-gzip zforce"><primary sortas="b-zforce">zforce</primary></indexterm>
  95 <para id="zforce"><command>zforce</command> forces a .gz extension on all given files
  96 that are gzipped files, so that gzip will not compress them again. This can be
  97 useful when file names were truncated during a file transfer.</para>
  98
  99 <indexterm zone="ch-system-gzip zgrep"><primary sortas="b-zgrep">zgrep</primary></indexterm>
 100 <para id="zgrep"><command>zgrep</command> runs grep on gzipped files.</para>
 101
 102 <indexterm zone="ch-system-gzip zless"><primary sortas="b-zless">zless</primary></indexterm>
 103 <para id="zless"><command>zless</command> runs less on gzipped files.</para>
 104
 105 <indexterm zone="ch-system-gzip zmore"><primary sortas="b-zmore">zmore</primary></indexterm>
 106 <para id="zmore"><command>zmore</command> runs more on gzipped files.</para>
 107
 108 <indexterm zone="ch-system-gzip znew"><primary sortas="b-znew">znew</primary></indexterm>
 109 <para id="znew"><command>znew</command> re-compresses files from compress format
 110 to gzip format -- .Z to .gz.</para>
 111
 112 </sect2>
 113
 114
 115
 116 </sect1>