lfs-book-zh_CN/chapter06/less.xml

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../general.ent">
  %general-entities;
]>
<sect1 id="ch-system-less" xreflabel="Less" role="wrap">
<title>Less-&less-version;</title>
<?dbhtml filename="less.html"?>

<indexterm zone="ch-system-less"><primary sortas="a-Less">Less</primary></indexterm>

<sect2 role="package"><title/>
<para>The Less package contains a text file viewer.</para>

<segmentedlist>
<segtitle>&buildtime;</segtitle>
<segtitle>&diskspace;</segtitle>
<seglistitem><seg>0.1 SBU</seg><seg>3.4 MB</seg></seglistitem>
</segmentedlist>

<segmentedlist>
<segtitle>Less installation depends on</segtitle>
<seglistitem><seg>Bash, Binutils, Coreutils, Diffutils,
GCC, Glibc, Grep, Make, Ncurses, Sed</seg></seglistitem>
</segmentedlist>
</sect2>

<sect2 role="installation">
<title>Installation of Less</title>

<para>Prepare Less for compilation:</para>

<screen><userinput>./configure --prefix=/usr --bindir=/bin --sysconfdir=/etc</userinput></screen>

<para>The meaning of the configure option:</para>

<itemizedlist>
<listitem><para><userinput>--sysconfdir=/etc</userinput>: This option tells the
programs created by the package to look in <filename>/etc</filename> for their
configuration files.</para></listitem>
</itemizedlist>

<para>Compile the package:</para>

<screen><userinput>make</userinput></screen>

<para>Now install it:</para>

<screen><userinput>make install</userinput></screen>

</sect2>

<sect2 id="contents-less" role="content"><title>Contents of Less</title>

<segmentedlist>
<segtitle>Installed programs</segtitle>
<seglistitem><seg>less, lessecho and lesskey</seg></seglistitem>
</segmentedlist>

<variablelist><title>Short descriptions</title>

<varlistentry>
<term id="less"><command>less</command></term>
<listitem>
<indexterm zone="ch-system-less less"><primary sortas="b-less">less</primary></indexterm>
<para>is a file viewer or pager. It displays the contents of the given file, letting you 
scroll around, find strings, and jump to marks.</para>
</listitem>
</varlistentry>

<varlistentry>
<term id="lessecho"><command>lessecho</command></term>
<listitem>
<indexterm zone="ch-system-less lessecho"><primary sortas="b-lessecho">lessecho</primary></indexterm>
<para>is needed to expand meta-characters, such as * and ?, in filenames on Unix systems.</para>
</listitem>
</varlistentry>

<varlistentry>
<term id="lesskey"><command>lesskey</command></term>
<listitem>
<indexterm zone="ch-system-less lesskey"><primary sortas="b-lesskey">lesskey</primary></indexterm>
<para>is used to specify the key bindings for less.</para>
</listitem>
</varlistentry>
</variablelist>

</sect2>

</sect1>