mirror of
https://github.com/Zeckmathederg/glfs.git
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6b5cc24518
git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@8901 af4574ff-66df-0310-9fd7-8a98e5e911e0
143 lines
4.4 KiB
XML
143 lines
4.4 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../../general.ent">
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%general-entities;
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<!ENTITY which-download-http "http://www.xs4all.nl/~carlo17/which/which-&which-version;.tar.gz">
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<!ENTITY which-download-ftp "ftp://ftp.gnu.org/gnu/which/which-&which-version;.tar.gz">
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<!ENTITY which-md5sum "95be0501a466e515422cde4af46b2744">
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<!ENTITY which-size "135 KB">
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<!ENTITY which-buildsize "1 MB">
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<!ENTITY which-time "less than 0.1 SBU">
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]>
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<sect1 id="which" xreflabel="which-&which-version;">
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<?dbhtml filename="which.html"?>
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<sect1info>
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<othername>$LastChangedBy$</othername>
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<date>$Date$</date>
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</sect1info>
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<title>Which-&which-version; and Alternatives</title>
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<indexterm zone="which">
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<primary sortas="a-Which">Which</primary>
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</indexterm>
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<para>The presence or absence of the <command>which</command> program
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in the main LFS book is probably one of the most contentious issues on the
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mailing lists. It has resulted in at least one flame war in the past. To hopefully
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put an end to this once and for all, presented here are two options for equipping
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your system with <command>which</command>. The question of which
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<quote><command>which</command></quote> is for you to decide.</para>
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<para>The first option is to install the actual GNU
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<application>which</application> package.</para>
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&lfs70_checked;
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<sect2 role="package">
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<title>Introduction to Which</title>
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<bridgehead renderas="sect3">Package Information</bridgehead>
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<itemizedlist spacing="compact">
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<listitem>
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<para>Download (HTTP): <ulink url="&which-download-http;"/></para>
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</listitem>
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<listitem>
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<para>Download (FTP): <ulink url="&which-download-ftp;"/></para>
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</listitem>
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<listitem>
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<para>Download MD5 sum: &which-md5sum;</para>
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</listitem>
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<listitem>
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<para>Download size: &which-size;</para>
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</listitem>
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<listitem>
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<para>Estimated disk space required: &which-buildsize;</para>
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</listitem>
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<listitem>
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<para>Estimated build time: &which-time;</para>
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</listitem>
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</itemizedlist>
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<para condition="html" role="usernotes">User Notes:
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<ulink url="&blfs-wiki;/which"/></para>
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</sect2>
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<sect2 role="installation">
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<title>Installation of Which</title>
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<para>Install <application>which</application> by running the following
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commands:</para>
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<screen><userinput>./configure --prefix=/usr &&
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make</userinput></screen>
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<para>This package does not come with a test suite.</para>
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<para>Now, as the <systemitem class="username">root</systemitem> user:</para>
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<screen role="root"><userinput>make install</userinput></screen>
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</sect2>
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<sect2 role="content">
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<title>Contents</title>
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<segmentedlist>
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<segtitle>Installed Program</segtitle>
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<segtitle>Installed Libraries</segtitle>
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<segtitle>Installed Directories</segtitle>
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<seglistitem>
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<seg>which</seg>
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<seg>None</seg>
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<seg>None</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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<varlistentry id="which-prog">
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<term><command>which</command></term>
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<listitem>
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<para>shows the full path of (shell) commands installed in your
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<envar>PATH</envar>.</para>
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<indexterm zone="which which-prog">
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<primary sortas="b-which">which</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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<sect2 role="installation">
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<title>The 'which' Script</title>
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<para>The second option (for those who don't want to install the package)
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is to create a simple script (execute as the
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<systemitem class="username">root</systemitem> user):</para>
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<screen role="root"><userinput>cat > /usr/bin/which << "EOF"
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<literal>#!/bin/bash
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type -pa "$@" | head -n 1 ; exit ${PIPESTATUS[0]}</literal>
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EOF
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chmod -v 755 /usr/bin/which
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chown -v root:root /usr/bin/which</userinput></screen>
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<para>This should work OK and is probably the easiest solution
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for most cases, but is not the most comprehensive implementation.</para>
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</sect2>
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</sect1>
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