Which X server am I running?

[LuckyTaxi]

I just installed BSD 4.5 and I installed both 3.3.6 and 4.1 by mistake. How can I tell which one is running?

 

[Heisenberg]

Look at the X logfile. Should be a '/var/log/XFree86.0.log' file.

 

[HigherGround]

run "xdpyinfo | grep vendor" from a shell window, it should tell you the release number ( 4XXX if running V4 3XXX if V3 )