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Re: How do I recognize a zombie process?

 
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# 1  
Old 08-21-2008
Tools Re: How do I recognize a zombie process?
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
Re: How do I recognize a zombie process?-zombie1jpg
# 2  
Old 08-21-2008
Example:
root 6365 6353 0 0:00 <defunct>
# 3  
Old 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

# 4  
Old 08-22-2008
MySQL
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
# 5  
Old 08-23-2008
get the proccess id, then pkill it
$ ps aux | awk '$8=="Z" { print $2 }'

Good luck
 
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