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A zombie process is nothing to worry about. It is not _any_ sort of security issue. I dug this up on google, it explains a zombie process better than I could: http://www.ale.org/archive/ale/ale-1.../msg00394.html
Thank you very much. I have one more question, as you see in that copy of my pc's statistics i have two users running on my pc. What i need to find out is who is the other user. When i type "users" i get "root root" twice. Is there any way for me to figure out why i have two root accounts running? I had installed clamav a couple of days back but i assumed that the group would be named clamav (installed using a .tgz file) Any ideas?
a zombie process is an uncleaned proccess on your system......
due to maybe a program bug........
a zombie process have 'Z' ,not 'S' or 'R' state.
I can't see it on your 'top' post......
USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT
root tty1 - 16May05 13days 6:38m 0.01s /bin/sh /usr/X1
root pts/0 :0 02:46 1.00s 0.01s 0.00s w
Thats what i get when i type the "w" command.
The first user which is logged on to 'tty1' is the shell from where you had initially logged on in a non-gui mode or runlevel 3 and it is from here that you have gone into gui mode or runlevel 5 by using some command say 'startx' as in linux.
The second terminal is the 'pts/0' which is normally used by the gui mode to open a separate session for the user to log in again in the gui mode. When you will log out of the gui mode it will again take you the terminal 'tty1' and then after issuing the command 'w' will show you on only one user i.e. the first one.
If you want to go to 'tty1' from the gui mode without logging out from the gui mode you can use the key combination 'Ctrl+Alt+F1'.
Last edited by ansarimuzaffar; 09-13-2007 at 11:18 PM.
a zombie process is an uncleaned proccess on your system......
due to maybe a program bug........
a zombie process have 'Z' ,not 'S' or 'R' state.
I can't see it on your 'top' post......
A zombie process is a process in which it's parent process has died or was stopped manually and immediately (kill -9 comes to mind). It usually occurs when a parent process doesn't stop cleanly.
I don't think it has anything to do with bugs.
The link that bulliver provides isn't working for me (dunno if others here are having the same issue), so here's another definition:
A zombie process doesn't react to signals because it's not really a process at all- it's just what's left over after it died. What's supposed to happen is that its parent process was to issue a "wait()" to collect the information about its exit. If the parent doesn't (programming error or just bad programming), you get a zombie. The zombie will go away if its parent dies- it will be "adopted" by init which will do the wait()- so if you see one hanging about, check its parent; if it is init, it will be gone soon, if not the only recourse is to kill the parent..which you may or may not want to do. -- from http://aplawrence.com/SCOFAQ/FAQ_scotec6cantkill.html
use the 'who' command to see who is logged in and if they are logged in from a local console or from a remote host.
also, to see if you have any zombie processes, use 'ps -aux'. if you see a 'Z' in the STAT column, then that process is zombied. not a big deal unless you have many.
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