How do I start a X-application on remote server over ssh?

Question

I need to start a X program on a remote server over ssh. The program should use the remote X-server (no x-forwarding required). What's the proper way to do this?

Answer 1

someapp --display <display identifier>

or

DISPLAY=<display identifier> someapp

The display identifier is usually :0.

Answer 2

export DISPLAY=:0.0 and then run your program. you may need to do xauth +localhost first. edit: xhost +localhost not xauth