X11: run a gnome app as another user

Question

I have ubuntu + x11 + gnome.

I want to run a graphical application as another user.

However, when I start it from the command line using sudo -u otheruser

Answer 1

gksu -u  -c 

Replace with the username to run the command as, and > with the command you want to run. Remember that the program will be run in the s context, but in the current directory.

In the popping up window, enter the password of the target of course.