The first method you can use is a GUI method to see what version you have installed. Personally I think it could be made a bit more prominent, but that isn’t my call. To find the version using the GUI method simply do the following:
System > About Ubuntu
The resulting window will show some main contents and then thank you for your interest in version.
The other method to find your version is a command line method. There are two commands you can use:
cat /etc/issue
or you can use
cat /etc/lsb-release
…and finally to find your kernel version and a few more details about your machine use the uname command which, per the man pages, shows system
information. Examples:
uname -a : print all informationuname -r : print the kernel release
uname -v : print the kernel version
uname -o : print the operating system
see man uname for more details on using the uname… and now you should be able to find out more about your machine, report better bugs and continue to make Ubuntu even better!
