How do I provide arguments to a command run from gksudo?

Question

I want to add a shortcut for gnome-system-monitor that runs with root access and has very high priority.

My command for the shortcut is:

gksudo -k -u root nice --20 gnome-system-monitor

But this gives the error:

gksudo: unrecognized option '--20'

How can I say that the --20 is an option of nice, not gksudo?

Is this the best command for what I want?

Answer 1

Try using:

gksudo -k -u root -- nice --20 gnome-system-monitor

The double dash (--) signifies the end of the parameter list for gksudo, so it doesn't try to interpret the --20 as a parameter to gksudo.

More information about this "bare double dash" can be found on Unix & Linux Stack Exchange.