source: chapter06/file-inst.xml@ 8cf9009

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Last change on this file since 8cf9009 was 56c46bdd, checked in by Gerard Beekmans <gerard@…>, 23 years ago

fixed sed command (removed necessary newline)

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@1118 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

  • Property mode set to 100644
File size: 1.3 KB
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1<sect2>
2<title>Installation of File</title>
3
4<para>Install File by running the following commands:</para>
5
6<para><screen><userinput>cp readelf.h readelf.h.backup &amp;&amp;</userinput>
7<userinput>sed $'/#define __/a \\\n#include &lt;stdint.h&gt;' readelf.h.backup &gt; readelf.h &amp;&amp;</userinput>
8<userinput>./configure --prefix=/usr --datadir=/usr/share/misc &amp;&amp;</userinput>
9<userinput>make &amp;&amp;</userinput>
10<userinput>make install</userinput></screen></para>
11
12<para>File uses magic numbers to determine a file type. These magic numbers
13come with File in a plain text file. File internally compiles this database
14each time it is run. This is not the normal type of operation for File since
15compiling a
16plain text file each time is not the fastest way to do it. File offers an
17option "-C" to compile this magic number file. The reason this isn't done
18automatically is that some people like to work on the magic numbers. On the
19other hand many people didn't get it that they should compile the magic
20numbers, so the author of File added a warning when the plain text magic file
21is used. As we usually won't work on the plain text magic file, we
22compile this file, because it's faster, fixes that annoying warning and is how
23it was meant to be:</para>
24
25<para><screen><userinput>file -C</userinput></screen></para>
26
27</sect2>
28
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