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1999-06-25
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NAME
Magic Numbers
PURPOSE
The Corel WordPerfect Magic Numbers dialog
box lets you decide whether or not you want
the Installation program to add a list of
Corel WordPerfect magic numbers to the UNIX
/etc/magic file so that the UNIX file
command can list Corel WordPerfect file
types.
The UNIX file command determines file types
by testing for certain numbers (called
"magic" numbers) in file headers. The UNIX
/etc/magic file contains the system list of
magic numbers and the types of files they
represent.
The file header of every Corel WordPerfect
file includes the magic number 377WPC, plus
another number that identifies the file
more specifically. Corel WordPerfect
provides a custom wpmagic file in the Corel
WordPerfect shlib10 directory that lists the
specific magic numbers for various types of
Corel WordPerfect files.
STEPS
To add the lines from the Corel WordPerfect
wpmagic file to the UNIX /etc/magic file,
1 Choose "Update the magic file." or...
Choose "DO NOT update the magic file."
to leave the UNIX /etc/magic file
unchanged.
If you choose No, you can still access the
Corel WordPerfect specific entries in the
wpmagic file using the following file
command:
file -m /<WPdir>/shlib10/wpmagic <file>
The /<WPdir> in the file command
represents the full pathname of the Corel
WordPerfect installation directory. The
<file> can include wildcard characters.
You can, for example, list the file types
of all files in a directory, including
Corel WordPerfect files, using the
following command:
file -m /<WPdir>/shlib10/wpmagic *