lfs-book/chapter06/bash.xml

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<sect1 id="ch-system-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>20.6 MB</seg></seglistitem>
</segmentedlist>

<segmentedlist>
<segtitle>&dependencies;</segtitle>
<seglistitem><seg>Binutils, Coreutils, Diffutils, Gawk,
GCC, Glibc, Grep, Make, Ncurses, and Sed.</seg></seglistitem>
</segmentedlist>
</sect2>

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

<!-- Edit Me -->
<para>The following patch fixes various issues, including a problem where Bash
will sometimes only show 33 characters on a line, then wrap to the next:</para>

<screen><userinput>patch -Np1 -i ../&bash-fixes-patch;</userinput></screen>

<para>Bash also has issues when compiled against newer versions of Glibc.  The
following patch resolves this problem:</para>

<screen><userinput>patch -Np1 -i ../&bash-avoid_WCONTINUED-patch;</userinput></screen>

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

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

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

<variablelist>
<varlistentry>
<term><parameter>--with-installed-readline</parameter></term>
<listitem><para>This options tells Bash to use the
<filename class="libraryfile">readline</filename> library that is already installed 
on the system rather than using its own readline version.</para></listitem>
</varlistentry>
</variablelist>

<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>Run the newly compiled <command>bash</command> program (replacing the one that is
currently being executed):</para>

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

<note><para>The parameters used make the <command>bash</command>
process an interactive login shell 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, bashbug, and sh (link to bash)</seg></seglistitem>
</segmentedlist>

<variablelist><bridgehead renderas="sect3">Short Descriptions</bridgehead>
<?dbfo list-presentation="list"?>
<?dbhtml list-presentation="table"?>

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

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

<varlistentry id="sh">
<term><command>sh</command></term>
<listitem>
<para>A symlink to the <command>bash</command> 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>
<indexterm zone="ch-system-bash sh"><primary sortas="b-sh">sh</primary></indexterm>
</listitem>
</varlistentry>
</variablelist>

</sect2>

</sect1>