If you use
sudo, you may have noticed that, with Fedora Core 5, you just can’t exec a graphical application as root (for example) if you haven’t actually logged in as root in your X environment (you never do that ! Do you ?).
You have probably encountered this type of message :
Xlib: connection to ":0.0" refused by server
Xlib: Invalid MIT-MAGIC-COOKIE-1 key
kcalc: cannot connect to X server :0
To be able to launch a graphical application as root, the XAUTHORITY environment variable must be copied to the shell launched by
This will open the /etc/sudoers file.
After “_XKB_CHARSET”, just add “XAUTHORITY”. This should now look like :
LS_COLORS MAIL PS1 PS2 QTDIR USERNAME \
LANG LC_ADDRESS LC_CTYPE LC_COLLATE LC_IDENTIFICATION \
LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC \
LC_PAPER LC_TELEPHONE LC_TIME LC_ALL LANGUAGE LINGUAS \
Now, you can try:
It’ll work !