Anders Karlsson wrote:
> * James Pifer <jep@xxxxxxxxxxxxxxxx> [20080825 15:03]:
>> I could use a little help with ps and grep. When running a command like:
>>
>> # ps -ewf | grep sendmail
>> root 2730 1 0 Jul14 ? 00:00:01 sendmail: accepting connections
>> smmsp 2739 1 0 Jul14 ? 00:00:00 sendmail: Queue runner@01:00:00 for /var/spool/clientmqueue
>> root 6500 6362 0 07:51 pts/3 00:00:00 grep sendmail
>
> Try
> # ps -ef | grep [s]endmail
> instead. Should do what you want (does for me anyway).
Even easier:
pgrep sendmail
will just print the process ID of sendmail. Nothing else.
Also look at pkill. You'll need to yum install procps if you don't have
it already.
>> Is there any way to run this command and get these results, but exclude
>> the actual grep itself, which is the last line?
>>
>> A little background, I have a java based application that I've used a
>> custom start and stop script for. Basically the stop script does:
>> stop() {
>> for pid in `ps -efww | grep myapp | grep -v grep | cut -b 10-15`;do
>> #echo $pid
>> kill -9 $pid
>> done
>> RETVAL=$?
>> return $RETVAL
>> }
>
> Well, in a shell, $$ is the PID. If you can capture your process PID
> when it starts, you simply write it in a file in /var/run/ and when
> you stop, you issue a "kill -9 $(</var/run/pidfile)".
>
>> This has worked for years, but for some reason it has stopped working. I
>> think it may be because the process is killing itself before it kills
>> the app?
>>
>> I assume the correct way to do this is store the pid in a file that you
>> reference, but I haven't figured out how to do that yet.
>>
>> Any help is appreciated.
>
> You can have a look at various init scripts in /etc/init.d/ to get an
> idea about how they done it.
>
> /Anders
>
--
Sjoerd Mullender
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