An Ubuntu comes up with the exclusive series of Codenames in every new release. These names are related to the creatures, in addition to an adjective for any impressive word. May be due to this, you might not be able to remember the name and sometimes it’s version. It’s not necessary to have a reason to know anything, it can be just for the sake of knowledge.
By default, the Unity mode appears when you open up the Ubuntu 14.04. From this you are not able to look at the full version of Ubuntu, the only choice you have is to use the Terminal.
Steps to Check Ubuntu version
Step 1: If you want to know the description of Operating system with the released version, then type “lsb_release -d” where ‘d’ stands for description and then press enter.
The LSB is an abbreviated form of Linux Standard base, it’s a package that is used to provide support to all the modules including the third party software.
Step 2: The above command will list the name of the OS you are using as well as its version. Look at the figure below. “lsb_release [options]” states the information associated with specific distribution of Linux.
For the Ubuntu 14.04 LTS, full codename is “trusty tahr” where ‘trusty’ stands for reliable and ‘tahr’ is the name of the wild goat, found in the Southern Asia.
All these commands worked fine in my system, you can check out in yours.