On 07/01/11 15:19, Terry Coles wrote:
On Friday 07 Jan 2011, John Carlyle-Clarke wrote:
DISPLAY=:0.0 chromium-browser
Thanks. That works fine.
I assume that I was right about the reason it wouldn't work in a script, eg
I'm not attached to the display in the X environment at the time?
That's pretty much it. Processes generally inherit an environment from
the process that spawns them. xinit or startx or {x,k,g}dm set
"DISPLAY" and other things when starting X and launching the clients
(usually a window manager or similar).
This means when you start a shell in your graphical session, it inherits
DISPLAY. Start a terminal in X and do "echo $DISPLAY" to check it.
If your shell script was started outside of X in some way (by cron, atd,
or boot process for example) then DISPLAY will not be set.
Of course, if you have more than one X session running, or if you are
running X remotely, then things may go a bit wonky since DISPLAY will
need to be something else!
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