source: postlfs/shells/tcsh.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
   "http://www.oasis-open.org/do/xml/4.5/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

  <!-- Following URL does has old versions: https://astron.com/pub/tcsh/old/ -->
  <!ENTITY tcsh-download-http "https://astron.com/pub/tcsh/tcsh-&tcsh-version;.tar.gz">
  <!ENTITY tcsh-download-ftp  " ">
  <!ENTITY tcsh-md5sum        "ad1f1d18638ac1d0ff736a96d0b5dbd3">
  <!ENTITY tcsh-size          "936 KB">
  <!ENTITY tcsh-buildsize     "11 MB (with tests)">
  <!ENTITY tcsh-time          "0.2 SBU (with tests)">
]>

<sect1 id="tcsh" xreflabel="Tcsh-&tcsh-version;">
  <?dbhtml filename="tcsh.html"?>

  <title>Tcsh-&tcsh-version;</title>

  <indexterm zone="tcsh">
    <primary sortas="a-Tcsh">Tcsh</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to Tcsh</title>

    <para>
      The <application>Tcsh</application> package contains <quote>an
      enhanced but completely compatible version of the Berkeley Unix C shell
      (<command>csh</command>)</quote>. This is useful as an alternative shell
      for those who prefer C syntax to that of the <command>bash</command>
      shell, and also because some programs require the C shell in order to
      perform installation tasks.
    </para>

    &lfs121_checked;

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>
          Download (HTTP): <ulink url="&tcsh-download-http;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download (FTP): <ulink url="&tcsh-download-ftp;"/>
        </para>
      </listitem>
      <listitem>
        <para>
          Download MD5 sum: &tcsh-md5sum;
        </para>
      </listitem>
      <listitem>
        <para>
          Download size: &tcsh-size;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated disk space required: &tcsh-buildsize;
        </para>
      </listitem>
      <listitem>
        <para>
          Estimated build time: &tcsh-time;
        </para>
      </listitem>
    </itemizedlist>

  </sect2>

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

    <para>
      Install <application>Tcsh</application> by running the following
      commands:
    </para>

<screen><userinput>./configure --prefix=/usr &amp;&amp;
make</userinput></screen>

    <para>
      To test the results, issue: <command>make check</command>.
    </para>

    <para>
      Now, as the <systemitem class="username">root</systemitem> user:
    </para>

<screen role="root"><userinput>make install install.man &amp;&amp;

ln -v -sf tcsh   /bin/csh &amp;&amp;
ln -v -sf tcsh.1 /usr/share/man/man1/csh.1</userinput></screen>
<!--
install -v -m755 -d          /usr/share/doc/tcsh-&tcsh-version;/html &amp;&amp;
install -v -m644 tcsh.html/* /usr/share/doc/tcsh-&tcsh-version;/html &amp;&amp;
install -v -m644 FAQ         /usr/share/doc/tcsh-&tcsh-version;</userinput></screen>
-->
  </sect2>

  <sect2 role="commands">
    <title>Command Explanations</title>

<!-- No longer there
    <para>
      <command>sh ./tcsh.man2html</command>: This creates HTML documentation
      from the formatted man page.
    </para>
-->
    <para>
      <command>ln -v -sf tcsh /bin/csh</command>: The FHS states that if
      there is a <application>C</application> shell installed, there should
      be a symlink from <filename>/bin/csh</filename> to it. This creates
      that symlink.
    </para>

  </sect2>

  <sect2 role="configuration">
    <title>Configuring Tcsh</title>

    <sect3 id="tcsh-config">
      <title>Config Files</title>

      <para>
        There are numerous configuration files for the C shell. Examples
        of these are <filename>/etc/csh.cshrc</filename>,
        <filename>/etc/csh.login</filename>,
        <filename>/etc/csh.logout</filename>,
        <filename>~/.tcshrc</filename>, <filename>~/.cshrc</filename>,
        <filename>~/.history</filename>, <filename>~/.cshdirs</filename>,
        <filename>~/.login</filename>, and <filename>~/.logout</filename>. More
        information on these files can be found in the
        <ulink role='man' url='&man;tcsh.1'>tcsh(1)</ulink> man page.
      </para>

      <indexterm zone="tcsh tcsh-config">
        <primary sortas="e-etc-csh.cshrc">/etc/csh.cshrc</primary>
      </indexterm>

      <indexterm zone="tcsh tcsh-config">
        <primary sortas="e-etc-csh.login">/etc/csh.login</primary>
      </indexterm>

      <indexterm zone="tcsh tcsh-config">
        <primary sortas="e-etc-csh.logout">/etc/csh.logout</primary>
      </indexterm>

      <indexterm zone="tcsh tcsh-config">
        <primary sortas="e-AA.tcshrc">~/.tcshrc</primary>
      </indexterm>

      <indexterm zone="tcsh tcsh-config">
        <primary sortas="e-AA.cshrc">~/.cshrc</primary>
      </indexterm>

      <indexterm zone="tcsh tcsh-config">
        <primary sortas="e-AA.history">~/.history</primary>
      </indexterm>

      <indexterm zone="tcsh tcsh-config">
        <primary sortas="e-AA.cshdirs">~/.cshdirs</primary>
      </indexterm>

      <indexterm zone="tcsh tcsh-config">
        <primary sortas="e-AA.login">~/.login</primary>
      </indexterm>

      <indexterm zone="tcsh tcsh-config">
        <primary sortas="e-AA.logout">~/.logout</primary>
      </indexterm>

    </sect3>

    <sect3>
      <title>Configuration Information</title>

      <para>
        Update <filename>/etc/shells</filename> to include the C shell
        program names (as the &root; user):
      </para>

<screen role="root"><userinput>cat &gt;&gt; /etc/shells &lt;&lt; "EOF"
<literal>/bin/tcsh
/bin/csh</literal>
EOF</userinput></screen>

      <para>
        The following <filename>~/.cshrc</filename> provides two alternative
        colour prompts and coloured <command>ls</command> output. If you prefer
        a global modification, issue the command as the &root; user, replacing
        <filename>~/.cshrc</filename> by <filename>/etc/csh.cshrc</filename>.
      </para>

<screen><userinput>cat &gt; ~/.cshrc &lt;&lt; "EOF"
<literal># Original at:
# https://www.cs.umd.edu/~srhuang/teaching/code_snippets/prompt_color.tcsh.html

# Modified by the BLFS Development Team.

# Add these lines to your ~/.cshrc (or to /etc/csh.cshrc).

# Colors!
set     red="%{\033[1;31m%}"
set   green="%{\033[0;32m%}"
set  yellow="%{\033[1;33m%}"
set    blue="%{\033[1;34m%}"
set magenta="%{\033[1;35m%}"
set    cyan="%{\033[1;36m%}"
set   white="%{\033[0;37m%}"
set     end="%{\033[0m%}" # This is needed at the end...

# Setting the actual prompt.  Two separate versions for you to try, pick
# whichever one you like better, and change the colors as you want.
# Just don't mess with the ${end} guy in either line...  Comment out or
# delete the prompt you don't use.

set prompt="${green}%n${blue}@%m ${white}%~ ${green}%%${end} "
set prompt="[${green}%n${blue}@%m ${white}%~ ]${end} "

# This was not in the original URL above
# Provides coloured ls
alias ls ls --color=always

# Clean up after ourselves...
unset red green yellow blue magenta cyan yellow white end</literal>
EOF</userinput></screen>

    </sect3>

  </sect2>

  <sect2 role="content">
    <title>Contents</title>

    <segmentedlist>
      <segtitle>Installed Program</segtitle>
      <segtitle>Installed Libraries</segtitle>
      <segtitle>Installed Directory</segtitle>

      <seglistitem>
        <seg>tcsh</seg>
        <seg>None</seg>
        <seg>None <!--/usr/share/doc/tcsh-&tcsh-version;--></seg>
      </seglistitem>
    </segmentedlist>

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

      <varlistentry id="tcsh-prog">
        <term><command>tcsh</command></term>
        <listitem>
          <para>
            is an enhanced but completely compatible version of the
            Berkeley Unix C shell, <command>csh</command>. It is usable as
            both an interactive shell and a script processor
          </para>
          <indexterm zone="tcsh tcsh-prog">
            <primary sortas="b-tcsh">tcsh</primary>
          </indexterm>
        </listitem>
      </varlistentry>
    </variablelist>

  </sect2>

</sect1>