You can check the version of Ubuntu you are using by running the command:
This will display your Ubuntu version and other related information.
About Linux Ubuntu
Ubuntu is a Linux distribution based on Debian and composed mostly of free and open-source software.
Ubuntu is a powerful system that is not an exception to the open-source paradigm of Linux distributions.
It features community and professional support for its users. The default software, packages,
and repositories are all free software as well, meaning that one can simply install the operating system
and utilize everything without requiring any licenses or special purchases.
The user may also wish to add licensed software and may do so with no major complication if they already know
the system and the way it works.