RAR (Roshal Archive) is one of well known archive file format available in compress technology. It’s developed by Eugene Roshal (Russian Software Engineer). Free version which only can read (extract) in Linux are PeaZip and unrar. The shareware version also available in Linux.
Although RARLAB distribute the source code and binaries (not under free software license), it’s only can extract not create the RAR archive. I think that’s the reason why ‘rar’ is not popular in Linux community.
To extract ‘rar’ file in Linux Ubuntu you need additional program.
Before you follow the instruction below, make sure you are connected to the internet.
First, open Linux Terminal (Applications > Accessories > Terminal) and type $sudo apt-get install unrar.