The Tombuntu blog points out a seriously helpful package available in Ubuntu’s extended repositories that make creating super-efficient 7-Zip archives simple and fast, whether you’re right-clicking or working with a command line. Run this command to install it:
sudo apt-get install p7zip
Users of other Linux distros should find a similar package in their own sources. Once installed, creating compressed archives for storing or emailing is as simple as selecting the files, right-clicking, and choosing “Create Archive,” and de-compressing just as simple.