Originally Posted by joblack
I tried to pack an Omnigraffle file. On the 'Explorer' (or whatever it's called in Mac OS X) it only showed one file. As I wasn't willing to pay 40 USD for a compression program i was playing around with a Unix tool (installed with fink) and that was the horror.
Right-click (or control-click) on the file in Finder. Select "compress <filename>". You now have a zip file as well as the original. Or if you must drop to the command like, zip is built-in there too.