Originally Posted by L Jay
I want to learn Command line Linux. I bought a tutorial book "Linux Command Line" to study. The introduction says it is for Ubuntu and Centos. I need to know if there is a difference in C.L. from distro to distro. I use Debian and don't want to waste time on something else. Thank you. L Jay
It really depends on the area you study.
The shells will be the same, and you can use whatever shell you want in whatever distro you want. So, if you learn bash scripting, it will be the same no matter which distro do you use.
The available tools can vary slightly, but the standard set of gnu tools should be always available in one or another form. So, as long as you don't rely on a feature that is specific of the distro you will also be fine.
Most administrative tasks will also be the same. However, there's an exception. When dealing with runlevels, configuration files, init scripts and a few other things then each distro has "its own book"
As user level you usually don't need to care about the distro unless you are doing a very specialized thing.