Q:

How can I find out which version of screen I am using?

Further to my previous question on screen not splitting my terminal , I got to the point where I can split my terminal horizontally but not vertically . This documentation says that vertical splitting requires screen >= 4.1. So how can I find out which version of screen I am using?

A:

Type Ctrl-A then v.  You'll get something on the status line that looks like
screen 4.00.03jw4 (FAU) 2-May-06

