I have presently export DISPLAY=:0. I do not know what the : means, and
why would you choose 1 rather than zero? Note that presently the window
does appear, but the command wmctrl -k does not seem to do anything. I
will be giving anacron an opportunity tomorrow with Wes' suggestion added.
-Denis
On Tue, Feb 6, 2018 at 1:57 PM, Tomas Kuchta <tomas.kuchta.li...@gmail.com>
wrote:
> 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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