On Wed, 2006-04-12 at 18:49 +0200, Chris wrote: > Hello, > > Hi I'd like to open X-applications like the in the example below from an su > Terminal, but get an Xlib connection error. I have set up sudo so that: sudo > kwrite /etc/fstab works, but how come it doesn't in a normal su Terminal? > > Thanks, > > Chris > > athlon:/home/stoffel# kwrite /etc/fstab > Xlib: connection to ":0.0" refused by server > Xlib: No protocol specified > > kwrite: cannot connect to X server :0.0
The credentials for using an X server are found in the .Xauthority file of each user's home directory. If you run 'xauth list' from the non-privileged user account, you will see the credentials to the X server you are working on. However, root does not have appropriate credentials in its .Xauthority until they are granted. When sudo is used, the HOME directory is not modified, so even though root is running the program, the HOME is still that of the original user, so the .Xauthority contains the appropriate credentials. However, when using su, the HOME changes to root's home directory, and the appropriate credentials do not exist in ~root/.Xauthority . 'man xauth' for more details. There is a wrapper package for su called sux, which grants the resulting su user permissions to the current X server when sux is called. Casey -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
