Welche Ubuntu Version habe ich?
Die installierte Ubuntu Version kann man über Terminal erfragen:
$ lsb_release -a
No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 16.04 LTS Release: 16.04 Codename: xenial
oder $ cat /etc/lsb-release
DISTRIB_ID=Ubuntu DISTRIB_RELEASE=16.04 DISTRIB_CODENAME=xenial DISTRIB_DESCRIPTION="Ubuntu 16.04 LTS"