Killing a defunct zombie process means identifying and killing the parent process. In this article, I will show how you can force a zombie process so that you can practice removing it. A simple way of forcing a zombie process is to start a process that has a short sleep in the background, immediately invoking … Bash: identifying and killing a zombie child processes
Using subprocess.Popen, subprocess.call, or subprocess.check_output will all invoke a process using Python, but if you want live output coming from stdout you need use subprocess.Popen in tandem with the Popen.poll method. In this article I will show how to invoke a process from Python and show stdout live without waiting for the process to complete. … Python: Getting live output from subprocess using poll
Postfix is a open source mail transfer agent. If communication the upstream mail relay is disrupted, email will build up in the pending mail queue until the root cause is resolved.