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How to get all the processes on display from Xvfb?

I have a program that starts ChromeDrivers, which launches the Chrome + browser, then tries to close both after completing some tasks (using Selenium). But often when my program cannot kill the ChromeDriver / Chrome browser. When I try to kill ChromeDriver, Chrome + browser, all other child processes are not destroyed.

I tried looking at / proc / x / environ to determine if I could extract the DISPLAY of this process, but found that such environment variable was not selected for the child processes of browser +.

Is there any other way to detect all processes on a particular Xvfb display and kill them all?

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google-chrome process selenium selenium-chromedriver xvfb
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This looks pretty promising if you have only one child process:

xvfb-run sleep 60 & pid_xvfb=$! kill $(ps -o pid= --ppid $pid_xvfb)
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