By default, Linux (Ubuntu anyway), the compression format 7-zip is not present. This is unfortunate because this format has a very good compression ratio. Linux users often notice a a compressed file with the extension 7z or 7za. These files have been compressed using 7-Zip. To unzip these files on Ubuntu and derivatives we need to install the 7-zip program.
How to install 7-zip and support for 7z archives of your favorite OS
Just enter the following command line:
Then, to compress, you as usual with the feature "Create Archive" is available when you right-click a file in Gnome. Or, you can compress it by hand:
sudo apt-get install p7zip
and unpack it by hand:
I have installed 7-Zip, and so I can open files compressed with this program and compress to this format. I remember once 7zip installed on Ubuntu does not have a dedicated graphical interface like Windows but integrates the transmission of compressed files. Therefore, when we're going to click with the right mouse button on a file or folder and we will select Compress 7zip format appear among those available: just select it and we have the compressed file in that format.
p7zip -d mystuff.7z