Command for .7z compression?

Question

I've never heard of this archiving method before, can someone tell me the command line that handles this?

Answer 1

.7z seems like an odd compression format to me too, though by the look of the extention, the z in 7z seems to stand for zip, making 7zip, which is a brand of decompression software, so I am thinking that 7z is a compression format used by the program 7zip

Try downloading from www.7-zip.org/download.html , I am unable to visit the site for some odd reason, but hopefully you can (I think their server is down currently)