sure fire way to get a PID

[iggystar]

I want a PID, just a PID and nothing but a PID.

You'd think ps would have an option for this, but if it does I can't find it.

I've tried piping the results of a PS command into every little unix widget I can think of I can't find a way to get the PID that works every time.

Any suggestions?

I need this so I can write a scripts I need for my rc1.d, rc2.d, etc directories. If anybody can point me to a good FAQ or recommend a good boox for a beginning Linux admin I'd appreciate that as well. I've been underwhelmed by the books I've looked at so far.

 

[pcunix]

ps -o pid --noheaders

If that's not what you mean, explain better.
Tony Lawrence
SCO Unix/Linux Resources

http://pcunix.com

tony@pcunix.com

 

[iggystar]

Well it's in the ballpark, but not exactly. I need the pid of a specific process, not just all the processes.

The line you gave me just gives me all the pids, it's not exactly what I need.

 

[pcunix]

How to you identify the process????

Can you explain what you really mean here?

Do you mean that you know the name of the process and want it's pid to kill it? I'd just use killall for that.

Or do you mean the last process you ran? There are shell variables for that sort of thing.

Be more specific as to what you want and I'm sure we can help you. Tony Lawrence
SCO Unix/Linux Resources

http://pcunix.com

tony@pcunix.com

 

[ifincham]

Hi,

On a redhat system you can just do :

cat /var/run/httpd.pid

(e.g. for the pid of httpd)

This can be used as an argument to something like kill - for example :

kill `cat /var/run/httpd.pid`

(all the .pids are in /var/run )

Hope this helps

 

[TheRAt]

how about something like:

ps ax -o pid -o cmd | g sshd | cut -f1 -d\/

this gives me a list of the pids for the sshd process(es) running on my machine... AV
tnedor@yahoo.com

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