Re: [gentoo-user] cronie setup questions

[Michael <confabulate@kintzios.com>]

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On Wednesday 9 October 2024 16:31:16 BST Walter Dnes wrote:
> On Thu, Oct 03, 2024 at 07:47:34PM -0400, Walter Dnes wrote
> 
> >   The Gentoo install suggested using "cronie".  I want to run a script
> > 
> > daily as local user.  The config I want is...
> > 
> > 35 7 * * * waltdnes /home/waltdnes/pm/check4update/check4update
> 
>   My email shows that the job is launching, but tripping over
> permissions.  Here's what it's supposed to do...
> 
> * Because I'm running a custom build of Pale Moon web browser, I can't
>   use the built-in updater from the standard version
> * I want to check the palemoon.org Atom feed for new releases
> * A text file "previous.txt" has the date stamp of the most recent entry
> * bash script "check4update"...
> *** wget's the webpage
> *** greps the "<published>" lines
> *** the top line has the most recent posting
> *** compare the the most recent <published> date with "previous.txt"
> *** if the same, exit
> *** if not the same...
> *** 1) update "previous.txt" with the newest date
> *** 2) use "geeqie" to display a garish messege about the update
> 
>   That last step is the problem.  I get the following error...
> 
> (geeqie:14531): Gtk-WARNING **: 07:35:01.797: cannot open display:
> 
>   What do I need to do to allow "geeqie" to open up in an X window as
> user "waltdnes".

You could let it know which display to use in your script, something like:

export DISPLAY=:0

However, it gets more complicated if a user is not logged in whenever the 
script happens to run and if the display is on :1 or some other value.  You 
would probably need to fish for $DISPLAY using awk or something similar and 
feed this into your script before your '/usr/bin/geeqie %u'.  Someone more 
knowledgable on scripting languages will hopefully advise.

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