Checking Current version of ubuntu

While working on finding solution to my sound problem on ubuntu , i had to find version number of OS , so Just googled it and type it here with hope that concise answer will be useful , as they are rare!

To check your Ubuntu version using the command line:

1. Open a Terminal (Applications -> Accessories -> Terminal) or Press CTRL+ALT+T.
2. Type lsb_release -a and press Enter.
3. The Ubuntu version will be displayed on the screen.