Killing a process in linux [closed]

Question

server01:/# ps -ax | grep java

Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html

 7342 pts/3    Z      0:00 [java] <defunct>

 7404 pts/3    S+     0:00 grep java


server01:/# kill 7342

server01:/# ps -ax | grep java

Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html

 7342 pts/3    Z      0:00 [java] <defunct>

 7406 pts/3    S+     0:00 grep java


server01:/# 

In the above I am using ps command to know the pid of the java process which is 7342 in the above case.

Then I killed that process using kill command. But that is not killed because again ps command shows java process with pid 7342.

Should I use some else command to kill the process and Why kill is not able to kill the process

Thanx

Answer 1

try

ps aux

then

kill -1 PID_NUMBER

to ask program to close itself, if it dosn´t answer you can force it to close

kill -9 PID_NUMBER

remember that using -9 to force program will finalize without asking and not saving anything check: man kill for more details

Answer 2

kill -9 can be used as a last resort to ensure the process dies.....