Re: [gentoo-user] Re: How to tell Cron X is running or not

On Sun, Nov 25, 2007 at 08:40:08PM -0600, reader@×××××××.com wrote:
> Yup, both of those should work from cron or anywhere.  In my case and
> probably many other as well, I could shorten the ps approach to:
> ps aux|grep '[X] :0'
>
> But looking for /tmp/.X0-lock  is probably the most reliable.  Thanks

Try xdpyinfo.  If $DISPLAY is not set, try xdpyinfo -display :0.0 for
the usual main display.  ssh -X -Y makes up its own names, but you
haev to figure out whether cron programs should even know about the
display in general, or the ssh ones in particular.

At any rate, try this:

    if xdpyinfo >/dev/null; then echo "X running"; else echo "No X"; fi

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