source: general/sysutils/which.xml@ 5cd0959d

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Last change on this file since 5cd0959d was 5cd0959d, checked in by Archaic <archaic@…>, 17 years ago

Resetting keywords

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@2592 af4574ff-66df-0310-9fd7-8a98e5e911e0

  • Property mode set to 100644
File size: 3.8 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>which-&which-version; and alternatives</title>
21
22<para>The presence or absence of the which program in the main <acronym>LFS
23</acronym> book is probably one of the most contentious issues we have on the
24mailing lists. It has resulted in at least one flame war in the past.
25To hopefully put an end to this once and for all, we here present two of
26the options 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
49</sect2>
50
51<sect2>
52<title>Installation of <application>which</application></title>
53
54<para>Install <application>which</application> by running the following
55commands:</para>
56
57<screen><userinput><command>./configure --prefix=/usr &amp;&amp;
58make &amp;&amp;
59make install</command></userinput></screen>
60
61</sect2>
62
63
64<sect2>
65<title>Contents</title>
66
67<para>The <application>which</application> package contains <command>which</command>.</para>
68
69</sect2>
70
71<sect2><title>Description</title>
72
73<sect3><title>which</title>
74<para><command>which</command> shows the full path of (shell) commands.</para>
75</sect3>
76
77</sect2>
78
79<sect2>
80<title>The 'which' script</title>
81<para>The second option (for those who don't want to install the program)
82is to create a simple script:</para>
83<screen><userinput><command>cat &gt; /usr/bin/which &lt;&lt; "EOF"</command>
84#!/bin/bash
85type -pa "$@" | head -n 1 ; exit ${PIPESTATUS[0]}
86<command>EOF
87chmod 755 /usr/bin/which
88chown root:root /usr/bin/which</command></userinput></screen>
89<para>This should work OK and is probably the easiest solution
90for most cases, but is not the most comprehensive implementation.</para>
91</sect2>
92
93</sect1>
94
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