RAR, a very popular and famous compression method. It is a non free archive file format that supports data compression, error recovery, and file spanning. You can use some of the Third-party software like unrar and 7-Zip to extract RAR files in Ubuntu 14.04 / 13.10 Ubuntu 13.04 / 12.10 / 12.04 / 11.10 which is free to use.
In Ubuntu unrar is not installed by default, you might face the below error while trying to extract rar files.
“Could not open this file type
There is no command installed for RAR archive files.”
To install unrar
Run the following command in terminal and type the password for the user, when prompted.
sudo apt-get install unrar
Thats it. Now you can extract or open RAR files in your system.
Hope this will be helpful for you!!!