Easy

Code:

unzip whatever.pk3

Doesn't seem to want to work?
 
[root@aidan baseq2]# unzip -l pak0.pak
Archive: pak0.pak
End-of-central-directory signature not found. Either this file is not
a zipfile, or it constitutes one disk of a multi-part archive. In the
latter case the central directory and zipfile comment will be found on
the last disk(s) of this archive.
note: pak0.pak may be a plain executable, not an archive
unzip: cannot find zipfile directory in one of pak0.pak or
pak0.pak.zip, and cannot find pak0.pak.ZIP, period.
 
Thanks
 
aidankitch

have u tried changing the file extension?

Code:

mv whatever.pak whatever.pk3

I use unzip to open up all the quake3 engine bassed games
I am not sure what games use plain .pak extension.
Eventhough what is most likely is what u say about it bieng a split file. That or it is corrupted.