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Tagged position.xml

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git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@4015 af4574ff-66df-0310-9fd7-8a98e5e911e0
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Manuel Canales Esparcia 2005-05-07 12:12:52 +00:00
parent 1f2436394c
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52
introduction/important/position.xml
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@ -6,18 +6,20 @@
]>
<sect1 id="intro-important-position">
<?dbhtml filename="position.html"?>
<sect1info>
<othername>$LastChangedBy$</othername>
<date>$Date$</date>
</sect1info>
<?dbhtml filename="position.html"?>
<title>The /usr versus /usr/local debate</title>
<title>The /usr Versus /usr/local Debate</title>
<para><emphasis>Should I install XXX in <filename>/usr</filename> or
<filename>/usr/local</filename>?</emphasis></para>
<para>This is a question without an obvious answer for an
<acronym>LFS</acronym> based system.</para>
LFS based system.</para>
<para>In traditional Unix systems, <filename>/usr</filename> usually
contains files that come with the system distribution, and the <filename>
@ -32,35 +34,38 @@ package system and <filename>/usr/local</filename> is not. This way the
package manager's database knows about every file within
<filename>/usr</filename>.</para>
<para><acronym>LFS</acronym> users build their own system and so deciding where
<para>LFS users build their own system and so deciding where
the system ends and local files begin is not straightforward. So the choice
should be made in order to make things easier to administer. There are several
reasons for dividing files between <filename>/usr</filename> and
<filename>/usr/local</filename>.</para>
<itemizedlist>
<listitem><para>On a network of several machines all running <acronym>LFS</acronym>,
or mixed <acronym>LFS</acronym> and other Linux distributions,
<listitem>
<para>On a network of several machines all running LFS,
or mixed LFS and other Linux distributions,
<filename>/usr/local</filename> could be used to hold packages
that are common between all the computers in the network. It can be
<acronym>NFS</acronym> mounted or mirrored from a single server. Here local
indicates local to the site.</para></listitem>
<listitem><para>On a network of several computers all running an identical
<acronym>LFS</acronym> system <filename>/usr/local</filename> could hold
NFS mounted or mirrored from a single server. Here local
indicates local to the site.</para>
</listitem>
<listitem>
<para>On a network of several computers all running an identical
LFS system <filename>/usr/local</filename> could hold
packages that are different between the machines. In this case local refers
to the individual computers.</para></listitem>
<listitem><para>Even on a single computer <filename>/usr/local</filename> can
to the individual computers.</para>
</listitem>
<listitem>
<para>Even on a single computer <filename>/usr/local</filename> can
be useful if you have several distributions installed simultaneously, and want
a place to put packages that will be the same on all of them.</para></listitem>
<listitem><para>Or you might regularly rebuild your <acronym>LFS</acronym>, but
a place to put packages that will be the same on all of them.</para>
</listitem>
<listitem>
<para>Or you might regularly rebuild your LFS, but
want a place to put files that you don't want to rebuild each time. This way
you can wipe the <acronym>LFS</acronym> file system and start from a clean
partition every time without losing everything.</para></listitem>
you can wipe the LFS file system and start from a clean
partition every time without losing everything.</para>
</listitem>
</itemizedlist>
<para>Some people ask why not use your own directory tree, e.g., <filename>
@ -73,10 +78,9 @@ often look for dependencies in <filename>/usr</filename> and
for is in <filename>/usr/site</filename> instead, the installer will
probably fail unless you specifically tell it where to look.</para>
<para><emphasis>What is the <acronym>BLFS</acronym> position on this?</emphasis>
</para>
<para><emphasis>What is the BLFS position on this?</emphasis></para>
<para>All of the <acronym>BLFS</acronym> instructions install programs in
<para>All of the BLFS instructions install programs in
<filename>/usr</filename> with optional instructions to install into
<filename>/opt</filename> for some specific packages.</para>