Kill second instance of a process












3















I'm running two instances of omxiv (Omx Image Viewer). The first instance acts like a background image, and the second instance acts as a slideshow. My question is how can I specifically kill the second instance?



Small note: The second instance will always be opened after the first instance.



I was thinking about killing it by pid, but I am not sure if it will have the same pid after the reboot, therefore this might not work.



Right now I am calling:



pkill -9 omxiv


which is terminating both instances.










share|improve this question



























    3















    I'm running two instances of omxiv (Omx Image Viewer). The first instance acts like a background image, and the second instance acts as a slideshow. My question is how can I specifically kill the second instance?



    Small note: The second instance will always be opened after the first instance.



    I was thinking about killing it by pid, but I am not sure if it will have the same pid after the reboot, therefore this might not work.



    Right now I am calling:



    pkill -9 omxiv


    which is terminating both instances.










    share|improve this question

























      3












      3








      3


      1






      I'm running two instances of omxiv (Omx Image Viewer). The first instance acts like a background image, and the second instance acts as a slideshow. My question is how can I specifically kill the second instance?



      Small note: The second instance will always be opened after the first instance.



      I was thinking about killing it by pid, but I am not sure if it will have the same pid after the reboot, therefore this might not work.



      Right now I am calling:



      pkill -9 omxiv


      which is terminating both instances.










      share|improve this question














      I'm running two instances of omxiv (Omx Image Viewer). The first instance acts like a background image, and the second instance acts as a slideshow. My question is how can I specifically kill the second instance?



      Small note: The second instance will always be opened after the first instance.



      I was thinking about killing it by pid, but I am not sure if it will have the same pid after the reboot, therefore this might not work.



      Right now I am calling:



      pkill -9 omxiv


      which is terminating both instances.







      debian ubuntu process raspbian






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Jan 13 at 11:22









      DinoDino

      1183




      1183






















          1 Answer
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          14














          pkill has a -n flag that will make it only affect the most recently started ("newest") matching process.



          pkill -n omxiv


          If the omxiv process is well behaved, there is no need to use -9.



          There is also a -o flag that will make pkill send a signal to the oldest matching process.



          Note that using pkill -n will always kill the newest instance. If you have three processes, it will kill the third, not the second (as per title of question).






          share|improve this answer


























          • That's exactly what I needed, it works great. Thanks for explanation

            – Dino
            Jan 13 at 11:30











          • According to the man page, this also works on Debian and Ubuntu.

            – kasperd
            Jan 13 at 19:52






          • 1





            @kasperd I was a bit careful, because OpenBSD pkill has some options not implemented on Linux systems, for example -q to be quiet.

            – Kusalananda
            Jan 13 at 20:29











          Your Answer








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          1 Answer
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          active

          oldest

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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          14














          pkill has a -n flag that will make it only affect the most recently started ("newest") matching process.



          pkill -n omxiv


          If the omxiv process is well behaved, there is no need to use -9.



          There is also a -o flag that will make pkill send a signal to the oldest matching process.



          Note that using pkill -n will always kill the newest instance. If you have three processes, it will kill the third, not the second (as per title of question).






          share|improve this answer


























          • That's exactly what I needed, it works great. Thanks for explanation

            – Dino
            Jan 13 at 11:30











          • According to the man page, this also works on Debian and Ubuntu.

            – kasperd
            Jan 13 at 19:52






          • 1





            @kasperd I was a bit careful, because OpenBSD pkill has some options not implemented on Linux systems, for example -q to be quiet.

            – Kusalananda
            Jan 13 at 20:29
















          14














          pkill has a -n flag that will make it only affect the most recently started ("newest") matching process.



          pkill -n omxiv


          If the omxiv process is well behaved, there is no need to use -9.



          There is also a -o flag that will make pkill send a signal to the oldest matching process.



          Note that using pkill -n will always kill the newest instance. If you have three processes, it will kill the third, not the second (as per title of question).






          share|improve this answer


























          • That's exactly what I needed, it works great. Thanks for explanation

            – Dino
            Jan 13 at 11:30











          • According to the man page, this also works on Debian and Ubuntu.

            – kasperd
            Jan 13 at 19:52






          • 1





            @kasperd I was a bit careful, because OpenBSD pkill has some options not implemented on Linux systems, for example -q to be quiet.

            – Kusalananda
            Jan 13 at 20:29














          14












          14








          14







          pkill has a -n flag that will make it only affect the most recently started ("newest") matching process.



          pkill -n omxiv


          If the omxiv process is well behaved, there is no need to use -9.



          There is also a -o flag that will make pkill send a signal to the oldest matching process.



          Note that using pkill -n will always kill the newest instance. If you have three processes, it will kill the third, not the second (as per title of question).






          share|improve this answer















          pkill has a -n flag that will make it only affect the most recently started ("newest") matching process.



          pkill -n omxiv


          If the omxiv process is well behaved, there is no need to use -9.



          There is also a -o flag that will make pkill send a signal to the oldest matching process.



          Note that using pkill -n will always kill the newest instance. If you have three processes, it will kill the third, not the second (as per title of question).







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Jan 13 at 20:29

























          answered Jan 13 at 11:27









          KusalanandaKusalananda

          125k16236389




          125k16236389













          • That's exactly what I needed, it works great. Thanks for explanation

            – Dino
            Jan 13 at 11:30











          • According to the man page, this also works on Debian and Ubuntu.

            – kasperd
            Jan 13 at 19:52






          • 1





            @kasperd I was a bit careful, because OpenBSD pkill has some options not implemented on Linux systems, for example -q to be quiet.

            – Kusalananda
            Jan 13 at 20:29



















          • That's exactly what I needed, it works great. Thanks for explanation

            – Dino
            Jan 13 at 11:30











          • According to the man page, this also works on Debian and Ubuntu.

            – kasperd
            Jan 13 at 19:52






          • 1





            @kasperd I was a bit careful, because OpenBSD pkill has some options not implemented on Linux systems, for example -q to be quiet.

            – Kusalananda
            Jan 13 at 20:29

















          That's exactly what I needed, it works great. Thanks for explanation

          – Dino
          Jan 13 at 11:30





          That's exactly what I needed, it works great. Thanks for explanation

          – Dino
          Jan 13 at 11:30













          According to the man page, this also works on Debian and Ubuntu.

          – kasperd
          Jan 13 at 19:52





          According to the man page, this also works on Debian and Ubuntu.

          – kasperd
          Jan 13 at 19:52




          1




          1





          @kasperd I was a bit careful, because OpenBSD pkill has some options not implemented on Linux systems, for example -q to be quiet.

          – Kusalananda
          Jan 13 at 20:29





          @kasperd I was a bit careful, because OpenBSD pkill has some options not implemented on Linux systems, for example -q to be quiet.

          – Kusalananda
          Jan 13 at 20:29


















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