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    cron job hdmi on and off

    Scheduled Pinned Locked Moved Solved Troubleshooting
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    • S Offline
      Sam 0 @Sam 0
      last edited by

      i created two files
      off.sh and on.sh
      they contain the following lines

      wlr-randr --output HDMI-A-1 --off
      wlr-randr --output HDMI-A-1 --on

      i also created a folder
      with the following rights:
      cmod 777
      the cron contains the following lines:
      unfortunately this does not work what is wrong?

      # Schakel display uit zondag - donderdag om 22.00
      00 22 * * 0-4 /home/username/MagicMirror/config/hdmionoff/off.sh>> /home/username/MagicMirror/config/hdmionoff/mof.log 2>&1
      # Schakel display uit vrijdag - zaterdag om 22.45
      45 22 * * 5,6 /home/username/MagicMirror/config/hdmionoff/off.sh>> /home/username/MagicMirror/config/hdmionoff/mof.log 2>&1
      # Zet het scherm aan maandag - vrijdag om 7u00
      00 07 * * 1-5/home/username/MagicMirror/config/hdmionoff/on.sh>> /home/username/MagicMirror/config/hdmionoff/mon.log 2>&1
      # Zet het scherm aan zaterdag - zondag om 8u00
      00 08 * * 6,0/home/username/MagicMirror/config/hdmionoff/on.sh>> /home/username/MagicMirror/config/hdmionoff/mon.log 2>&1
      
      S S evroomE 3 Replies Last reply Reply Quote 0
      • S Offline
        sdetweil @Sam 0
        last edited by

        @Sam-0 are the sh files marked executable?

        ls -laF in your folder to see

        permissions are 3 groups of 3 settings
        read/write/execute
        for user, group and all others
        9 settings from the right
        one more for directory and 1 for system

        ds, user, group, other

        Sam

        How to add modules

        learning how to use browser developers window for css changes

        1 Reply Last reply Reply Quote 0
        • S Offline
          Sam 0 @Sam 0
          last edited by

          I thought it was right but now the rights on the sh files are set to 0777 and also on the folders
          I also did a test to see if I could execute the sh files, this works tonight the cron should execute it, let me know if it works

          7d588f38-160b-4f84-a7fc-6932e1d74561-image.png

          S 1 Reply Last reply Reply Quote 0
          • S Offline
            sdetweil @Sam 0
            last edited by sdetweil

            @Sam-0 yes. although you dont need write permission, (except for user)
            means anyone else could change the script

            Sam

            How to add modules

            learning how to use browser developers window for css changes

            S 1 Reply Last reply Reply Quote 0
            • evroomE Offline
              evroom @Sam 0
              last edited by evroom

              @Sam-0 said in cron job hdmi on and off:

              i created two files
              off.sh and on.sh
              they contain the following lines

              wlr-randr --output HDMI-A-1 --off
              wlr-randr --output HDMI-A-1 --on

              Do you have #!/bin/bash or #!/bin/sh at the very beginning of your shell scripts ?

              #! /bin/sh – Execute the file using the Bourne shell, or a compatible shell, assumed to be in the /bin directory
              #! /bin/bash – Execute the file using the Bash shell

              You can also put /bin/bash in the crontab entry (before /home/username/...).
              Then there is no way for cron to not execute it as a shell script and it will even run without the executable bit set.

              And what Sam mentioned: the scripts need to be executable but not necessarily writable (chmod 755).
              This should normally do the trick.

              If you have mail installed (which mail) you can put this at the very beginning of the crontab file:
              MAILTO=username (in my case admin).
              With
              journalctl --since "1 day ago" --unit cron.service --no-pager
              you can see if cron ran your script and with mail you can see more details on the cron job executed.

              Good luck.

              1 Reply Last reply Reply Quote -1
              • S Offline
                Sam 0 @sdetweil
                last edited by sdetweil

                @evroom Thanks for your explanation, I have made adjustments and will check tonight if it works. I will report this back. Thanks for the effort.

                1 Reply Last reply Reply Quote 0
                • S Offline
                  Sam 0
                  last edited by

                  unfortunately it still doesn’t work what am I doing

                  wrong?!

                  6df4646c-2d05-4f37-ab98-06602edb7242-image.png
                  cron info

                  on sh file
                  5579a93f-27f3-4e53-b75e-59c5306798b8-image.png

                  off sh file
                  e7e6712a-47f1-4210-b91f-6eb6bc5c7230-image.png

                  error logfile:
                  2d8cad2e-a6e6-496d-a3eb-34dfff1f115d-image.png

                  evroomE 3 Replies Last reply Reply Quote 0
                  • evroomE Offline
                    evroom @Sam 0
                    last edited by

                    @Sam-0

                    So it seems that the cronjob is okay.

                    Can you do:
                    ˋˋˋls -als /run/user/1000/wayland*ˋˋˋ

                    I think you need wayland-0 iso wayland-1.

                    With ˋˋˋ grep username /etc/passwdˋˋˋ (use your username) you can verify that your user has uid 1000.

                    1 Reply Last reply Reply Quote 0
                    • evroomE Offline
                      evroom @Sam 0
                      last edited by

                      @Sam-0

                      In de laatste 2 regels mist een spatie bij /home.

                      1 Reply Last reply Reply Quote 0
                      • evroomE Offline
                        evroom @Sam 0
                        last edited by

                        This post is deleted!
                        1 Reply Last reply Reply Quote 0
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