[CentOS] Zip password recovery

Wed Oct 17 09:10:34 UTC 2007
Lorenzo Quatrini <lorenzo at gmk.it>

Hi all,
sorry if I am Off Topic on this list, but I think that this could be 
interesting also for other people; anyway:
what would be the best way to recover a password from a zip file? And for other 
type of files (eg. xls, pdf)?
I googled a bit, and I can only find ugly/unthrusted ( ;) ) windows programs... 
what about Linux?

TIA

Lorenzo Quatrini