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    Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first

    How to restart ES from a script?

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    scriptessystems.cfgrestart
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    • cyperghostC
      cyperghost
      last edited by cyperghost

      @meleu well that are only 2 or three more processes - clean enough but thank you ;)

      @TMNTturtlguy I'm also not a coder - I made my master degree in chemistry

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      • TMNTturtlguyT
        TMNTturtlguy @cyperghost
        last edited by

        @cyperghost thanks for explaining!

        To answer your question from the previous post - OMX is the screensaver running, part of a new update to ES.

        here is my output - when i ran the kill line, it killed the screensaver.
        0_1497625746069_0f8ea24f-92e6-4002-b41f-13d774febe71-image.png

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        • cyperghostC
          cyperghost
          last edited by

          yes that's it...

          You see so it works...
          You killed ES with PID 941

          This was terminated

          and relaunched as new
          ES with PID 1500

          meleus script would kill
          938 and 941
          you can check with (the -e parameter shows list of killed PIDs)

          pkill -f -e "/opt/retropie/supplementary.*emulationstation([^.]|$)"
          

          after meleus script all emulationstation PIDs are gone >> dead!

          BuZzB 1 Reply Last reply Reply Quote 0
          • BuZzB
            BuZz administrators @cyperghost
            last edited by BuZz

            @cyperghost What's the problem with sending a SIGINT to all processes rather than one ?

            @TMNTturtlguy es-restart will get removed by the ES launch script hence why it disappears.

            To help us help you - please make sure you read the sticky topics before posting - https://retropie.org.uk/forum/topic/3/read-this-first

            cyperghostC 1 Reply Last reply Reply Quote 1
            • cyperghostC
              cyperghost @BuZz
              last edited by cyperghost

              @BuZz Well ... You are the coding wizard :)

              I think if you show us a way to solve this proper please go on.
              Maybe you can make this waterproof? Or tell us something behind the scene of RetroPie?
              Your are welcome!

              BuZzB 1 Reply Last reply Reply Quote 0
              • BuZzB
                BuZz administrators @cyperghost
                last edited by BuZz

                @cyperghost I'm not sure what the problem is ? :)

                [edit] is it still the same issue as in the OP ? I'd have to test, but it should be ok to killall on ES, which would also kill the current running script of course as it's a child process itself.

                To help us help you - please make sure you read the sticky topics before posting - https://retropie.org.uk/forum/topic/3/read-this-first

                cyperghostC 1 Reply Last reply Reply Quote 0
                • cyperghostC
                  cyperghost @BuZz
                  last edited by

                  @BuZz ... and you ask me? :D

                  Bild Text

                  TMNTturtlguyT cyperghostC 2 Replies Last reply Reply Quote 0
                  • TMNTturtlguyT
                    TMNTturtlguy @cyperghost
                    last edited by

                    @cyperghost @meleu

                    That did it! Success....I am now back to running without getting the errors. @cyperghost your script does work well. I am going to upload the update to github. If you are willing it would be great for you to test. It is easy for you to delete the script after testing if you don't find it useful. Thanks for all the help. Will be interested to see how updates to ES will affect this.

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                    • cyperghostC
                      cyperghost @cyperghost
                      last edited by cyperghost

                      @BuZz
                      The problem is that you can't kill ES with killall command.
                      It will return to bash prompt and you are not able to restart in graphical mode on your TV (via SSH yes that works)

                      So I seem to kill the latest child process that forces ES to restart IF a es-restart is present in /tmp

                      meleus script kills two pids... and then ES is gone like killall.

                      Maybe now you understand my "EUREKA" ;)

                      BuZzB 1 Reply Last reply Reply Quote 0
                      • BuZzB
                        BuZz administrators @cyperghost
                        last edited by

                        @cyperghost perhaps he accidently killed the parent bash script. Killing all ES processes or just one shouldn't make a difference. I'll test though.

                        To help us help you - please make sure you read the sticky topics before posting - https://retropie.org.uk/forum/topic/3/read-this-first

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                        • cyperghostC
                          cyperghost
                          last edited by

                          @BuZz
                          Please test... maybe you understand my EUREKA today, okay?
                          This was really tricky

                          BuZzB 1 Reply Last reply Reply Quote 0
                          • meleuM
                            meleu
                            last edited by

                            @cyperghost @TMNTturtlguy
                            Some background I would like to share with you guys:

                            • when you type emulationstation in the shell, it executes /usr/bin/emulationstation

                            • the /usr/bin/emulationstation is a shell script that calls /opt/retropie/supplementary/emulationstation/emulationstation.sh.

                            • the /opt/retropie/supplementary/emulationstation/emulationstation.sh calls the /opt/retropie/supplementary/emulationstation/emulationstation and this is the real emulationstation binary.

                            • the /opt/retropie/supplementary/emulationstation/emulationstation.sh has a logic to restart ES, restart system and shutdown system based on the existence of some specific files in /tmp. The code of this script can be seen here.

                            • in my failed attempt to restart ES from commandline, I was trying create the /tmp/es-restart and kill only the ES binary. According to the emulationstation.sh it's enough to restart ES. But as we saw, my approach is killing the emulationstation.sh too, and that is what is "crashing".

                            I'll try something more concise this evening, but if @cyperghost has some free time now and would like to investigate more, my suggestion is to find a way to kill only that very specific binary: /opt/retropie/supplementary/emulationstation/emulationstation.

                            I used those metacharacters on my pkill regex to try to match some edge cases (like running a custom branch ES or launching ES with some parameter).

                            P.S.: now that I see @BuZz is aboard, I'm sure that the elegant solution is coming. :)

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                            • BuZzB
                              BuZz administrators @cyperghost
                              last edited by BuZz

                              @cyperghost I think the problem is just the emulationstation.sh is being killed (which handles the restarting). Should be simple enough to avoid killing that. eg specifying the process name exactly rather than pattern matching.

                              To help us help you - please make sure you read the sticky topics before posting - https://retropie.org.uk/forum/topic/3/read-this-first

                              cyperghostC 1 Reply Last reply Reply Quote 0
                              • cyperghostC
                                cyperghost @BuZz
                                last edited by cyperghost

                                @BuZz Please go on.... I think it is not as easy
                                Because I manually lauched /opt.../ emulationstation.sh and that did not workd.
                                @TMNTturtlguy discovered the /tmp thing today +1 for him

                                BuZzB 1 Reply Last reply Reply Quote 1
                                • BuZzB
                                  BuZz administrators @cyperghost
                                  last edited by BuZz

                                  @cyperghost It should be. I would guess at something like

                                  touch /tmp/es-restart; killall -e "/opt/retropie/supplementary/emulationstation/emulationstation"
                                  

                                  should be fine.

                                  To help us help you - please make sure you read the sticky topics before posting - https://retropie.org.uk/forum/topic/3/read-this-first

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                                  • cyperghostC
                                    cyperghost
                                    last edited by

                                    let me test...

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                                    • BuZzB
                                      BuZz administrators
                                      last edited by BuZz

                                      or to work with emulationstation running from any path. (eg with emulationstation-kids etc).

                                      touch /tmp/es-restart; pkill -f "/emulationstation$"
                                      

                                      To help us help you - please make sure you read the sticky topics before posting - https://retropie.org.uk/forum/topic/3/read-this-first

                                      cyperghostC 1 Reply Last reply Reply Quote 1
                                      • cyperghostC
                                        cyperghost
                                        last edited by cyperghost

                                        Works fine

                                        touch /tmp/es-restart; killall -e "/opt/retropie/supplementary/emulationstation/emulationstation"
                                        
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                                        • cyperghostC
                                          cyperghost @BuZz
                                          last edited by cyperghost

                                          @BuZz said in How to restart ES from a script?:

                                          pkill -f "/emulationstation$"

                                          That let's restart just 2 PIDs... Does not work!

                                          touch /tmp/es-restart; killall -e "/opt/retropie/supplementary/emulationstation/emulationstation"
                                          

                                          runs fine all 3 PIDs are up to date


                                          Man ... I even wrote use the tty1 outputs. So indeed the relauch script was killed

                                          BuZzB TMNTturtlguyT 2 Replies Last reply Reply Quote 0
                                          • BuZzB
                                            BuZz administrators @cyperghost
                                            last edited by

                                            @cyperghost said in How to restart ES from a script?:

                                            pkill -f "/emulationstation$"

                                            Worked here when I just tested.

                                            To help us help you - please make sure you read the sticky topics before posting - https://retropie.org.uk/forum/topic/3/read-this-first

                                            cyperghostC 1 Reply Last reply Reply Quote 1
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