First, make sure you have 7z available. On Debian-based systems you can install 7z via:
sudo apt-get install p7zip-full p7zip-rar
Now, to backup the folder ./your-folder, you can do so via:
tar -cvf - ./your-folder | 7z a -si your-folder.tar.7z
This howto is part of a larger collection of howtos maintained by the author (mostly for his own reference). The source code for the current howto in plain Markdown is available on GitHub. If you have a GitHub account, you can jump straight in, and suggest edits or improvements via the link at the bottom of the page (Improve this page).
made with ❤ by Valera Rozuvan