It is also occasionally useful to be able to kill an X server with impunity, e.g. to check how an application behaves when its X connection goes away.
Even better: You can use this to deal with less-than-well-behaved programs that require a given resolution or color depth; I use it to be able to play Might and Magic VI full-screen using Wine, without having to fiddle with XRandR to get my resolution back afterwards.
So how do I do this? Simple:
startx /path/to/program option1 option2 -- :1
It really is that simple. If you wish, you can add more options after the double dash to pass them to the invoked X server. For instance, to run MM6 I do this:
startx $HOME/bin/mm6-core -- :1 -depth 16
-depth 16tells X that I want 16-bit color.
mm6-coreis simply a script that takes care of invoking Wine with the right options.
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