checking running process

Question

I am new babe to Linux. So please skip to read if you are not patient with begineer.

Let's say I am asked to check and shut down the processes that I am not familiar with. So when I ls under bin folder, I see multiple process .sh. But I want to know which process is associated with which tomcat process.

Is there any easy way to find out that?

Example startmyprocess1.sh, but when I do ps -ef | grep startmyprocess1 doesn't return the running process.

But actually the running tomcat process name is myprocess, so when I do ps -ef | grep myprocess, I can see the running process. To know that I have to ask the responsible person.

So, the names are different. If like that, I need to ask him several times. Any better way to figure this out?

Answer 1

Starting myprocess from within startmyprocess.sh does not name the process after the underlying shell script, that is why your ps -ef | grep startmyprocess1 does not return a result.

This is also why many processes, especially daemons, write their pid out to file so that you can easily reference it's process. This can be done with:

#!/bin/sh
pid=`myprocess`
echo $pid > /tmp/myprocess.pid

or you can query $! which contains the last pid:

#!/bin/sh
myprocess
echo $! > /tmp/myprocess.pid

and query/list the process by it's pid:

ps --pid $PID

Answer 2

try this one..,(not tested)

ps -aux | grep "yourprocess"

For example,

ps -aux | grep "httpd"