source: general/sysutils/which.xml@ 1586494

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Last change on this file since 1586494 was 1586494, checked in by Randy McMurchy <randy@…>, 17 years ago

Spelling, grammar, tag and excessive whitespace corrections to various package instructions

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@3134 af4574ff-66df-0310-9fd7-8a98e5e911e0

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File size: 3.0 KB
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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
3 "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6
7 <!ENTITY which-download-http "http://www.xs4all.nl/~carlo17/which/which-&which-version;.tar.gz">
8 <!ENTITY which-download-ftp "ftp://ftp.gnu.org/gnu/which/which-&which-version;.tar.gz">
9 <!ENTITY which-size "123 KB">
10 <!ENTITY which-buildsize "940 KB">
11 <!ENTITY which-time "0.03 SBU">
12]>
13
14<sect1 id="which" xreflabel="which-&which-version;">
15<sect1info>
16<othername>$LastChangedBy$</othername>
17<date>$Date$</date>
18</sect1info>
19<?dbhtml filename="which.html"?>
20<title><application>which</application>-&which-version; and alternatives</title>
21
22<para>The presence or absence of the which program in the main
23<acronym>LFS</acronym> book is probably one of the most contentious issues on
24the mailing lists. It has resulted in at least one flame war in the past.
25To hopefully put an end to this once and for all, presented here are two
26options for equipping your system with "which". The question of which "which"
27is for you to decide.</para>
28
29<para>The first option is to install the actual <acronym>GNU</acronym> program
30<emphasis>which</emphasis>.</para>
31
32<sect2>
33<title>Introduction to <application>which</application></title>
34
35<sect3><title>Package information</title>
36<itemizedlist spacing='compact'>
37<listitem><para>Download (HTTP): <ulink
38url="&which-download-http;"/></para></listitem>
39<listitem><para>Download (FTP): <ulink
40url="&which-download-ftp;"/></para></listitem>
41<listitem><para>Download size: &which-size;</para></listitem>
42<listitem><para>Estimated disk space required:
43&which-buildsize;</para></listitem>
44<listitem><para>Estimated build time:
45&which-time;</para></listitem></itemizedlist>
46</sect3>
47
48</sect2>
49
50<sect2>
51<title>Installation of <application>which</application></title>
52
53<para>Install <application>which</application> by running the following
54commands:</para>
55
56<screen><userinput><command>./configure --prefix=/usr &amp;&amp;
57make &amp;&amp;
58make install</command></userinput></screen>
59
60</sect2>
61
62<sect2>
63<title>Contents</title>
64
65<para>The <application>which</application> package contains
66<command>which</command>.</para>
67
68</sect2>
69
70<sect2><title>Description</title>
71
72<sect3><title>which</title>
73<para><command>which</command> shows the full path of (shell) commands.</para>
74</sect3>
75
76</sect2>
77
78<sect2>
79<title>The 'which' script</title>
80<para>The second option (for those who don't want to install the program)
81is to create a simple script:</para>
82<screen><userinput><command>cat &gt; /usr/bin/which &lt;&lt; "EOF"</command>
83#!/bin/bash
84type -pa "$@" | head -n 1 ; exit ${PIPESTATUS[0]}
85<command>EOF
86chmod 755 /usr/bin/which
87chown root:root /usr/bin/which</command></userinput></screen>
88<para>This should work OK and is probably the easiest solution
89for most cases, but is not the most comprehensive implementation.</para>
90</sect2>
91
92</sect1>
93
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