I am not aware of just this particular file which was downloaded from the site. This file is about Aix Servers configuaration.
I request you let me know what program which this particular extension could be opened.
Thanks in advance.
If you use cpio and gzip..you get that extension..you can first unzip it with gunzip and then use cpio -0cv to extract the contents
Thank You Hrishy.
Meanwhile, I got the clue as to how I can open the this file.