I have several deamon (ftp, telnet, ssh) running on my Linux box. How do I kill the process? What syntax should I use (kill -*** **)

Danny

I believe man signal will give you more info, but here's what I use:

ps aux | grep programname
So:
ps aux | grep ftp
Would give me info about where proftpd is running, then I'd note the pid and:
kill -15 1234
Where 1234 is the pid.

A 15 signal tells the application to finish up and close. It's clean. If your application doesn't respond to that, you can kill -9 it instead.

A 9 signal tells it to stop right now and close, actually I think it might even happen further up the chain of events, such as get killed from it's source rather than the application itself. It's much worse for the application, and should only be used when 15 (or others) aren't working.

I hope I've got those correct, see man signal for more info

Cool

Thanks! What about Kill -HUP? when do you use -HUP?

I use HUP when I need to restart inetd, such is the case if I use proftpd in inetd mode rather than standalone.

A HUP signal stands for (IIRC) Hang UP; it means:
After you finish what you are doing, simply restart your process, re-read your configuration file, and move on as if nothing happened.

Or something like that

HTH

Cool

kill -kill is a good one if nothing else works...!

FOr services such as ftp, try:

/sbin/service --status-all | grep ftp

...if it's recognised, you should get a response such as:

vsftpd (pid 10234) is running...

If so, you can then do:

/sbin/service vsftpd stop

to stop the service.

Another thing to look at - do a:

/sbin/chkconfig --list | more

to see all services that start automatically. See man chkconfig for more options.

Dave

Also, if you don't want to run the daemons to start automatically chkconfig is your friend. As Dave suggested run man chkconfig. You can use it to control what daemons start and what run level they start at.

Mike

You can use 'top' to see all of the process running with who is running them and their pid.

I also enjoy the command pkill.

With pkill you can actually kill commands simply by name alone and not by PIDs.

Give it a try sometime.

Cool, learn something new everyday Can't believe I've never found that...

Mike