APLawrence.com -  Resources for Unix and Linux Systems, Bloggers and the self-employed

2004/02/27 zombie

A process whose parent dies before it did.

Zombies result from errors or sloppy programming. A process forks, and execs a new process onto the fork. The original process is the parent of the old process; you can see that in a "ps" listing. If that parent now dies or exits deliberately, the child process continues to run. But when it dies, it is supposed to report its exit status to its parent - if that parent were alive, it is supposed to issue a "wait()" on the child to collect that status. If the parent is dead, it's not going to be doing that, so init inherits the process and shows it as being in a "zombie" state. Init will clean everything up eventually; just give it time.

See Understanding "Kill"



Got something to add? Send me email.




Increase ad revenue 50-250% with Ezoic


More Articles by

Find me on Google+

© Tony Lawrence



Kerio Samepage


Have you tried Searching this site?

Support Rates

This is a Unix/Linux resource website. It contains technical articles about Unix, Linux and general computing related subjects, opinion, news, help files, how-to's, tutorials and more.

Contact us





Perl is designed to give you several ways to do anything, so consider picking the most readable one. (Larry Wall)





This post tagged: