Re: How do I recognize a zombie process?

pikecoguy · #1 (**permalink**) 08-21-2008

Hey Guys,

I am not really new to Unix/Linux however I was never taught how to spot a zombie process. I used top to check out the processes I was running and how the resources were looking and in the upper right it said 1 zombie, I have attached a jpeg of it. Thank you in advance for your help.

Michael

SebaM6 · #2 (**permalink**) 08-21-2008

Example:
root 6365 6353 0 0:00 <defunct>

buffoonix · #3 (**permalink**) 08-21-2008

Most ps implementations show it as <defunct>.
So you could simply

Code:

$ ps -ef | grep defunct

With Linux ps you can also go after the state like such, provided there are any zombies
which well behaved programs simply don't produce

Code:

$ ps -e -o pid= -o state=|awk '$2=="Z"{print$1}'|tr \\040 ,|xargs ps -fp

pikecoguy · #4 (**permalink**) 08-22-2008

Quote:

Originally Posted by buffoonix

Most ps implementations show it as <defunct>.
So you could simply

Code:

$ ps -ef | grep defunct

With Linux ps you can also go after the state like such, provided there are any zombies
which well behaved programs simply don't produce

Code:

$ ps -e -o pid= -o state=|awk '$2=="Z"{print$1}'|tr \\040 ,|xargs ps -fp

Thank you very much that helps a ton I will use these and see what I come up with.

Michael

sad_angle · #5 (**permalink**) 08-23-2008

$ ps aux | awk '$8=="Z" { print $2 }'

Good luck

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