From time to time, you might be facing a binary .deb package that you have to tweak for suiting your own needs or for testing purposes. By "a binary .deb package" I mean the final .deb, with a few configuration files and pre/post-inst/rm scripts and not the source files for the .deb themselves.
So, what to do if you only want to change, say, the behavior of a postinst file and then have the .deb prepared for installation?
First of all, the .deb itself is a kind of an archive. This is why you can browse its contents while in mc, for instance ("Midnight Commander").
