[52d29f7] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 |
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| 7 | <!ENTITY which-download-http "http://www.xs4all.nl/~carlo17/which/which-&which-version;.tar.gz">
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| 8 | <!ENTITY which-download-ftp "ftp://ftp.gnu.org/gnu/which/which-&which-version;.tar.gz">
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| 9 | <!ENTITY which-size "123 KB">
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| 10 | <!ENTITY which-buildsize "940 KB">
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| 11 | <!ENTITY which-time "0.03 SBU">
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| 12 | ]>
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| 13 |
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[f45b1953] | 14 | <sect1 id="which" xreflabel="which-&which-version;">
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[a0f03b0] | 15 | <sect1info>
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[5cd0959d] | 16 | <othername>$LastChangedBy$</othername>
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| 17 | <date>$Date$</date>
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[a0f03b0] | 18 | </sect1info>
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[7f72cbf] | 19 | <?dbhtml filename="which.html"?>
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[1586494] | 20 | <title><application>which</application>-&which-version; and alternatives</title>
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[f45b1953] | 21 |
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[1586494] | 22 | <para>The presence or absence of the which program in the main
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| 23 | <acronym>LFS</acronym> book is probably one of the most contentious issues on
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| 24 | the mailing lists. It has resulted in at least one flame war in the past.
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| 25 | To hopefully put an end to this once and for all, presented here are two
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| 26 | options for equipping your system with "which". The question of which "which"
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[2ab68bb] | 27 | is for you to decide.</para>
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[f45b1953] | 28 |
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[46bca118] | 29 | <para>The first option is to install the actual <acronym>GNU</acronym> program
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[85ef7049] | 30 | <emphasis>which</emphasis>.</para>
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| 31 |
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[52d29f7] | 32 | <sect2>
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| 33 | <title>Introduction to <application>which</application></title>
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[1586494] | 34 |
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[52d29f7] | 35 | <sect3><title>Package information</title>
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| 36 | <itemizedlist spacing='compact'>
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| 37 | <listitem><para>Download (HTTP): <ulink
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| 38 | url="&which-download-http;"/></para></listitem>
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| 39 | <listitem><para>Download (FTP): <ulink
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| 40 | url="&which-download-ftp;"/></para></listitem>
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| 41 | <listitem><para>Download size: &which-size;</para></listitem>
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[1586494] | 42 | <listitem><para>Estimated disk space required:
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[52d29f7] | 43 | &which-buildsize;</para></listitem>
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| 44 | <listitem><para>Estimated build time:
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| 45 | &which-time;</para></listitem></itemizedlist>
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| 46 | </sect3>
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[1586494] | 47 |
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[52d29f7] | 48 | </sect2>
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| 49 |
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| 50 | <sect2>
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| 51 | <title>Installation of <application>which</application></title>
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[1586494] | 52 |
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[52d29f7] | 53 | <para>Install <application>which</application> by running the following
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| 54 | commands:</para>
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[1586494] | 55 |
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[52d29f7] | 56 | <screen><userinput><command>./configure --prefix=/usr &&
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| 57 | make &&
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| 58 | make install</command></userinput></screen>
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| 59 |
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[1586494] | 60 | </sect2>
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[52d29f7] | 61 |
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| 62 | <sect2>
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| 63 | <title>Contents</title>
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[1586494] | 64 |
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| 65 | <para>The <application>which</application> package contains
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| 66 | <command>which</command>.</para>
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| 67 |
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[52d29f7] | 68 | </sect2>
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[1586494] | 69 |
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[52d29f7] | 70 | <sect2><title>Description</title>
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[1586494] | 71 |
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[52d29f7] | 72 | <sect3><title>which</title>
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| 73 | <para><command>which</command> shows the full path of (shell) commands.</para>
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| 74 | </sect3>
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[1586494] | 75 |
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[52d29f7] | 76 | </sect2>
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[f45b1953] | 77 |
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[52d29f7] | 78 | <sect2>
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| 79 | <title>The 'which' script</title>
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[85ef7049] | 80 | <para>The second option (for those who don't want to install the program)
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| 81 | is to create a simple script:</para>
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[110ec35a] | 82 | <screen><userinput><command>cat > /usr/bin/which << "EOF"</command>
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[f45b1953] | 83 | #!/bin/bash
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[2687739] | 84 | type -pa "$@" | head -n 1 ; exit ${PIPESTATUS[0]}
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[110ec35a] | 85 | <command>EOF
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[f45b1953] | 86 | chmod 755 /usr/bin/which
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[110ec35a] | 87 | chown root:root /usr/bin/which</command></userinput></screen>
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[70b65ddf] | 88 | <para>This should work OK and is probably the easiest solution
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| 89 | for most cases, but is not the most comprehensive implementation.</para>
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[85ef7049] | 90 | </sect2>
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[f45b1953] | 91 |
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| 92 | </sect1>
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| 93 |
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