lfs-book-zh_CN/chapter06/bash.xml

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  <!ENTITY % general-entities SYSTEM "../general.ent">
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<sect1 id="ch-system-bash" xreflabel="Bash" role="wrap">
<title>Bash-&bash-version;</title>
<?dbhtml filename="bash.html"?>

<indexterm zone="ch-system-bash"><primary sortas="a-Bash">Bash</primary></indexterm>

<sect2 role="package"><title/>
<para>The Bash package contains the Bourne-Again SHell.</para>

<segmentedlist>
<segtitle>&buildtime;</segtitle>
<segtitle>&diskspace;</segtitle>
<seglistitem><seg>1.2 SBU</seg><seg>27 MB</seg></seglistitem>
</segmentedlist>

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

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

<para>Bash has a number of bugs in it that cause it to not behave the 
way it is expected at times. Fix this behavior with the following
patch:</para>

<screen><userinput>patch -Np1 -i ../bash-&bash-version;-gnu_fixes-2.patch</userinput></screen>

<para>Now prepare Bash for compilation:</para>

<screen><userinput>./configure --prefix=/usr --bindir=/bin \
    --without-bash-malloc --with-installed-readline</userinput></screen>

<para>Compile the package:</para>

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

<para>To test the results, issue:
<userinput>make tests</userinput>.</para>

<para>Install the package:</para>

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

<para>Now run the newly compiled <command>bash</command> program (replacing the one you are currently executing):</para>

<screen><userinput>exec /bin/bash --login +h</userinput></screen>

<note><para>The parameters used make it an interactive login instance
(so <filename>/etc/profile</filename> is read, if it exists, and the first found
<filename>~/.bash_profile</filename>, <filename>~/.bash_login</filename> or 
and <filename>~/.profile</filename>) and continue to
disable hashing so that new programs are found as they become
available.</para></note>

</sect2>


<sect2 id="contents-bash" role="content"><title>Contents of Bash</title>

<segmentedlist>
<segtitle>Installed programs</segtitle>
<seglistitem><seg>bash, sh (link to bash) and bashbug</seg></seglistitem>
</segmentedlist>

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

<varlistentry id="bash">
<term><command>bash</command></term>
<listitem>
<indexterm zone="ch-system-bash bash"><primary sortas="b-bash">bash</primary></indexterm>
<para>is a widely-used command interpreter. It
performs many kinds of expansions and substitutions on a given command line
before executing it, thus making this interpreter a powerful tool.</para>
</listitem>
</varlistentry>

<varlistentry id="bashbug">
<term><command>bashbug</command></term>
<listitem>
<indexterm zone="ch-system-bash bashbug"><primary sortas="b-bashbug">bashbug</primary></indexterm>
<para>is a shell script to help the user
compose and mail bug reports concerning <command>bash</command> in a standard format.</para>
</listitem>
</varlistentry>

<varlistentry id="sh">
<term><command>sh</command></term>
<listitem>
<indexterm zone="ch-system-bash sh"><primary sortas="b-sh">sh</primary></indexterm>
<para>is a symlink to the bash program. When invoked
as <command>sh</command>, <command>bash</command> tries to mimic the 
startup behavior of historical versions of <command>sh</command> as
closely as possible, while conforming to the POSIX standard as well.</para>
</listitem>
</varlistentry>
</variablelist>

</sect2>

</sect1>