more knowledgeable unix "file" program

[Perry Hutchison]

In article <1989Oct4.160115.26561 at agate.berkeley.edu>
jim at insect.berkeley.edu (Jim Bradley) writes:

> I would like a "file" program for unix that identifies
> more file formats that the Sun OS 3.5 version.

The file(1) command uses a file of "magic numbers" stored in /etc/magic
to recognize file formats.  Additional formats can be recognized by adding
appropriate entries there, or in an alternate "magic numbers" file
specified by the -m option.