mirror of https://github.com/tLDP/LDP
29 lines
1.2 KiB
XML
29 lines
1.2 KiB
XML
<sect2>
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<title>Installation of File</title>
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<para>Install File by running the following commands:</para>
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<para><screen><userinput>cp readelf.h readelf.h.backup &&
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sed $'/#define __/a \\\n#include <stdint.h>' readelf.h.backup > readelf.h &&
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./configure --prefix=/usr --datadir=/usr/share/misc &&
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make &&
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make install</userinput></screen></para>
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<para>File uses magic numbers to determine a file type. These magic numbers
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come with File in a plain text file. File internally compiles this database
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each time it is run. This is not the normal type of operation for File since
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compiling a
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plain text file each time is not the fastest way to do it. File offers an
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option "-C" to compile this magic number file. The reason this isn't done
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automatically is that some people like to work on the magic numbers. On the
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other hand many people didn't get it that they should compile the magic
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numbers, so the author of File added a warning when the plain text magic file
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is used. As we usually won't work on the plain text magic file, we
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compile this file, because it's faster, fixes that annoying warning and is how
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it was meant to be:</para>
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<para><screen><userinput>file -C</userinput></screen></para>
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</sect2>
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