Ako povolit X11 cez ssh a nasledne su - user
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% hostname
yorick
% echo $DISPLAY
localhost:17.0
% xauth list | grep yorick/unix:17
yorick/unix:17  MIT-MAGIC-COOKIE-1  628d00dc1de8b7f60cec68d44fca01f5
% su - username
Password:
% echo $DISPLAY
DISPLAY: Undefined variable.
% setenv DISPLAY localhost:17.0
% xauth add yorick/unix:17  MIT-MAGIC-COOKIE-1  628d00dc1de8b7f60cec68d44fca01f5