Checking and solving Linux zombie processes

Use the following command to find the zombie process

ps-A-ostat,ppid,pid,cmd|grep-e'^[Zz]'

Command notes:
-A parameter lists all processes
-o Custom For the output field, we set the display field to stat (status), ppid (process parent id), pid (process id), and cmd (command). These four parameters

-C are used to specify the name of the command being executed. Here you are asking ps to only display the information of the process generated by the php command
ps-Cjava-olstart,pid,cmd【But it seems that the printing is incomplete~】
ps-A-olstart,pid,args|grepjava【This is OK ~】
Since the process with status z or Z is a zombie process, we use grep to capture the process with stat status zZ

There are a total of 9 zombie processes here. We need to kill them all and execute the following command

kill-98310

At this time, you execute the search for zombie processes and find that all zombie processes are gone.

Supplement:

Recently I encountered another problem. There are more than 100 zombie processes on a server, and the parent process of each zombie process is different. If you use the above method to kill one by one, it will not work. I'm so exhausted.
　 Then you should think of a simple command to directly find the zombie process and then kill the parent process~

　ps-A-ostat,ppid,pid,cmd|grep-e'^[Zz]'|awk'{print $2}'|xargskill-9

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