I see lsb_release
is mentioned below.
https://www.ionos.com/digitalguide/server/know-how/how-to-check-debian-version/
Unfortunately, it may not work on all Debian based systems; for example, on a stock Ubuntu 20.04.2, it returns the following:
$ lsb_release
No LSB modules are available.
Is there any other way for me to find out which version of Debian my current Ubuntu installation is based on?
lsb_release -a
.No LSB modules are available.
on stock Ubuntu 20.04.2.