Hi all
I'm newbie
In this forum, i have posted some topics about zip and unzip a file on AIX system.
And i have some answers so that AIX can not work with zip file, and they tell me some files to zip and unzip my files on AIX such as:

zip-2.3-3.aix4.3.ppc.rpm
unzip-5.51-1.aix5.1.ppc.rpm
unzip-5.50-3.aix5.1.ppc.rpm

Can you tell me what type of those files?
and how can i use it to zip and unzip my files on AIX?
Is it an application, how can i install it and use it?

Sorry my english.
thanks a lot.