[X-Unix] So what is a dmg file?

[Eugene Lee]

On Wed, Jan 21, 2004 at 11:20:09PM -0700, James Bucanek wrote:
: 
: Victor Eijkhout wrote on Thursday, January 22, 2004:
: 
: >>Why would you expect 'file' to know anything about Mac OS X specific 
: >>file formats?  'file' is a UNIX utility.
: >
: >I would at least expect it to report the same about all dmg files.
: 
: But 'file' just makes a guess about a binary file based on "magic
: numbers" it finds at the beginning of the file.  Unless someone has
: updated its database to include the "magic numbers" for dmg files, the
: results are going to be, more or less, random.  Or at the very least,
: consitently confused with some other binary file format that appears
: to be similar.

Or the DMG file could be valid but corrupted.  In any case, it's really
beyond the ability of "file" to provide an absolute guarantee that a
file is really what it seems to be.


-- 
Eugene Lee
http://www.coxar.pwp.blueyonder.co.uk/