I would like to know the diffrence beteen the following commands:
sudo x11vnc
sudo x11vnc -auth /var/lib/lightdm/.Xauthority -display :0
thank you in advance.
It is the same command so there is no difference.
If you meant: what do the options mean: the manual explains it like this:
Options
-display disp
X11 server display to connect to, usually :0. The X server process must be running on same machine and support MIT-SHM. Equivalent to setting the DISPLAY environment variable to disp.
-auth file
Set the X authority file to be file, equivalent to setting the XAUTHORITY environment variable to file before startup. Same as
-xauth file
. See xsecurity(7) , xauth(1) man pages for more info.
Related:
sudo x11vnc
is the default command which called sudo x11vnc -auth /var/lib/lightdm/.Xauthority -display :0
man
command?man sudo;man x11vnc
man x11vnc