| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
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| 3 | <!ENTITY % general-entities SYSTEM "../general.ent">
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| 4 | %general-entities;
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| 5 | ]>
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| 6 | <sect1 id="prepare-aboutlfs">
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| 7 | <title>About $LFS</title>
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| 8 | <?dbhtml filename="aboutlfs.html"?>
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| 9 |
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| 10 | <para>Throughout this book, the environment variable <envar>LFS</envar> will
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| 11 | be used several times. It is paramount that this variable is always defined.
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| 12 | It should be set to the mount point chosen for the LFS partition.
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| 13 | Check that the <envar>LFS</envar> variable is set up properly with:</para>
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| 14 |
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| 15 | <screen><userinput>echo $LFS</userinput></screen>
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| 16 |
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| 17 | <para>Make sure the output shows the path to the LFS partition's mount
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| 18 | point, which is <filename class="directory">/mnt/lfs</filename> if the
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| 19 | provided example was followed. If the output is incorrect, the
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| 20 | variable can be set with:</para>
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| 21 |
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| 22 | <screen><userinput>export LFS=/mnt/lfs</userinput></screen>
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| 23 |
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| 24 | <para>Having this variable set is beneficial in that commands such as
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| 25 | <command>mkdir $LFS/tools</command> can be typed literally. The shell
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| 26 | will automatically replace <quote>$LFS</quote> with
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| 27 | <quote>/mnt/lfs</quote> (or whatever the variable was set to) when it
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| 28 | processes the command line.</para>
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| 29 |
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| 30 | <para>Do not forget to check that <envar>$LFS</envar> is set whenever
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| 31 | you leave and reenter the current working environment (as when doing a
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| 32 | <quote>su</quote> to <emphasis>root</emphasis> or another user).</para>
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| 33 |
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| 34 | </sect1>
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| 35 |
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