Below we can find some tips on how to check Ubuntu version you are currently running.
The first place to look for Ubuntu version is to look inside /etc/issue file. From terminal run command:
**$ cat /etc/issue
**Ubuntu Xenial Xerus \n \l
To obtain a Ubuntu release number check content of /etc/lsb-release file:
$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu Xenial Xerus
Additional information regarding Ubuntu version can be found within /etc/os-release:
$ cat /etc/os-release
NAME="Ubuntu"
VERSION="16.04 (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
UBUNTU_CODENAME=xenial
Furthermore, the following command will provide you with a neat output of your current Ubuntu version:
$ lsb_release -da
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu Xenial Xerus (development branch)
Release: 16.04
Codename: xenial
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