If you need to know which version of Xubuntu you’re running, select Help from the desktop launch menu. This opens the documentation and the version is in the main title. Alternatively, from the command line, type lsb_release -a.
Versions of Xubuntu between 14.04 LTS (Trusty Tahr) and 15.10 (Wily Werewolf) don’t include snap by default, but snap can be installed from the Ubuntu Software Centre by searching for snapd (make sure your distro is up-to-date first).
Alternatively, snapd can be installed from the command line:
$ sudo apt update
$ sudo apt install snapd
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
To test your system, install the hello-world snap and make sure it runs correctly: