How to get KDE version from console

There are many ways to do this. One way of would be open up konsole, then do:

kwrite --version

Kwrite is one of the default applications the comes with KDE. This should show something like:

Qt: 4.6.3
KDE Development Platform: 4.4.4 (KDE 4.4.4) "release 3"
KWrite: 4.4.4 (KDE 4.4.4) "release 2