How to check Ubuntu version in Linux command line

To check the version of Ubuntu that you are running on your Linux system using the command line, you can use the lsb_release command. This command displays information about the Linux distribution, including the version number.

To check the version of Ubuntu that you are running, open a terminal window and run the following command:

lsb_release -a

The lsb_release command will display a list of information about the Linux distribution, including the name, release number, and codename.

For example, the output might look something like this:

No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.1 LTS
Release:        20.04
Codename:       focal

In this example, the lsb_release command is displaying information about an Ubuntu 20.04.1 LTS system. The Distributor ID field shows the name of the Linux distribution, in this case Ubuntu. The Description field shows the version of the Linux distribution, in this case Ubuntu 20.04.1 LTS. The Release field shows the release number of the Linux distribution, in this case 20.04. The Codename field shows the codename of the Linux distribution, in this case focal.

If you only want to display the version number of Ubuntu that you are running, you can use the lsb_release command with the -r option.

For example:

lsb_release -r

This will display the release number of the Ubuntu distribution that you are running, in this case 20.04.