$ ls -l someZip*
-rw-r--r-- 1 gmargo gmargo  22 Oct 28 10:39 someZip1.zip
-rw-r--r-- 1 gmargo gmargo 335 Oct 28 10:34 someZip2.zip
$ unzip -v someZip1.zip 
Archive:  someZip1.zip
warning [someZip1.zip]:  zipfile is empty
$ unzip -v someZip2.zip 
Archive:  someZip2.zip
 Length   Method    Size  Ratio   Date   Time   CRC-32    Name
--------  ------  ------- -----   ----   ----   ------    ----
     282  Defl:N      217  23%  10-28-09 10:34  ade4be0c  perl150.pl
--------          -------  ---                            -------
     282              217  23%                            1 file