Имаме архивирана папка "site" разбита на 2 части от по 15 MB т.е. "site.z01" и "site.zip"

Когато опитаме обаче:

unzip site.z*;

Archive:  site.z01
  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.
unzip:  cannot find zipfile directory in one of site.z01 or
        site.z01.zip, and cannot find site.z01.ZIP, period.

За да се получи правим следното :) :

cat site.z* > combined.zip && unzip combined.zip;

Това е :)