I do not believe that you will be able to open graphical window using cron.
The best you can hope for is sending notifications or emails.
If you have the strength to continue with random experiments. Try: export
DISPLAY :1
In your script before launching the window. Although that will likely be
blocked because the executing user is different than the user owning the
graphical environment.
The only sure way, I can think of, would be to use existing or write own
notification system. This would run after login, by the user and accept
your notification messages for displaying.
Hope it helps, Tomas
On Feb 6, 2018 1:45 PM, "Ali Corbin" <ali.cor...@gmail.com> wrote:
> Another thing to try is to use the full path, in case the cron environment
> doesn't include $PATH
>
> On Tue, Feb 6, 2018 at 1:39 PM, wes <p...@the-wes.com> wrote:
>
> > try sudo wmctrl, the same way you're doing sudo zenity.
> >
> > -wes
> >
> > On Tue, Feb 6, 2018 at 1:27 PM, Denis Heidtmann <
> denis.heidtm...@gmail.com
> > >
> > wrote:
> >
> > > I have a script which runs daily via anacron. I want the script to
> > launch
> > > a zenity window to notify the user, so I issue the command wmctrl -k on
> > > before zenity and wmctrl - off after. This is supposed to minimize
> all
> > > open windows to ensure that the zenity window will be visible. I
> have a
> > > test script to show that it works. Both scripts are owned by root, but
> > > editable by me. I have run the test script from a command line login
> > > using sudo, as well as from a Gnome terminal. The test script behaves
> as
> > > intended--the desktop is cleared of all open windows. I inserted a
> test
> > > zenity window at the beginning of the real script to verity that when
> > > launched by anacron it would behave the same way. It does not! It
> does
> > > not minimize open windows, but the zenity window does appear on top of
> > the
> > > open windows.
> > >
> > > What is different about the anacron launch? I have been monkeying with
> > > this thing for quite a while. I tried wmctrl -R but that did not
> behave
> > as
> > > I had hoped. wmctrl -k does what I want except when anacron is doing
> the
> > > launching.
> > >
> > > Ideas?
> > >
> > > -Denis
> > >
> > > Test script:
> > >
> > > #!/bin/bash
> > > # test to get zenity to work when script is not called from an X window
> > > # change to a non-X login (^ alt F2), call this w/sudo, then go back
> to X
> > > (^ alt F7)
> > > # to see if a zenity window shows up.
> > > # feb 5 2018 the above worked--all open windows minimized.
> > >
> > >
> > > Notification () {
> > > # pass title, text of notice, and timeout as 3 parameters
> > > TITLE=$1; MSG=$2; TIMOUT=$3
> > > wmctrl -k on
> > > sudo -u household zenity --question --title="$TITLE" --text="$MSG"
> > > --timeout="$TIMOUT"
> > > RETRNCODE=$?
> > > wmctrl -k off
> > > return $RETRNCODE # return codes: 0 = YES, 1 = cancel, 5 = timeout
> > > }
> > >
> > > sleep 30
> > >
> > > export DISPLAY=:0
> > > # test of launch of zenity
> > > Notification "Test of zenity (backup_checksh)" "This should minimize
> all
> > > open windows." 20
> > > # remove when satisfied that launch works.
> > >
> > > Top of real script:
> > >
> > > #!/bin/bash
> > >
> > > Notification () {
> > > # pass title, text of notice, and timeout as 3 parameters
> > > TITLE=$1; MSG=$2; TIMOUT=$3
> > > wmctrl -k on
> > > sudo -u household zenity --question --title="$TITLE" --text="$MSG"
> > > --timeout="$TIMOUT"
> > > RETRNCODE=$?
> > > wmctrl -k off
> > > return $RETRNCODE # return codes: 0 = YES, 1 = cancel, 5 = timeout
> > > }
> > > export DISPLAY=:0
> > > # test of launch of zenity
> > > Notification "Test of zenity (backup_checksh)" "This should minimize
> all
> > > open windows." 5
> > > # remove when satisfied that launch works.
> > > MAX_TIME=$((7 * 24 * 3600))
> > > _______________________________________________
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> > >
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