Very Computer

hi,

I know the kill command can kill a process ID, but it is normally done by
two command: firstly show the proc id and then kill. Does any one know how
to do it in a single command line? ie. kill -HUP | ps ..... inet ??

Thanks
Sam

Well you could do a ps and pipe it to grep, then awk, then kill.  You
might look at killall.  It may have the functionality that you're
looking for.

--

Biology/Neuroscience, Pre-med | http://home.uchicago.edu/~dpryan

   hello,

Quote:>  I know the kill command can kill a process ID, but it is normally done by
>  two command: firstly show the proc id and then kill. Does any one know how
>  to do it in a single command line? ie. kill -HUP | ps ..... inet ??

   Maybe:
   ~# ps aux | grep inet | awk '{print $2}' | xargs kill -HUP

   But, there is 'skill' (/usr/ports/sysutils/skill) that you can use by
giving the name of the process instead of PID:
   ~# skill -HUP inet

regards,
--
               I believe the technical term is "Oops!"

killall -HUP inetd

does what you want.

--
Stephen Montgomery-Smith

http://www.math.missouri.edu/~stephen

Quote:> hi,

> I know the kill command can kill a process ID, but it is normally done by
> two command: firstly show the proc id and then kill. Does any one know how
> to do it in a single command line? ie. kill -HUP | ps ..... inet ??

> Thanks
> Sam

in general, no.
a human has to look at the whole line of ps output to decide what is the
right process, and the decision is based on different criteria every time.
in one case you may need to kill a login shell and all it's children but not
any other shells or any other instances of the children.

in another case you may need to kill any process attached to a particular
tty

or any process that has anything to do with the X server...

in the simplest case, if you know for a fact that there is only one instance
of a particular program, and you know exactly how to regexp for that program
in the list, then you could do something like this:

kill -HUP `ps -ef |awk '($8 == "theprogram"){print $2}'`

which means, if field 8 is "theprogram" then kill the process number in
field 2

but this is unsafe, even though I have provided a more precise example here
than some others you would see if you had searched google groups for "awk
kill"

which all go like:

kill -HUP `ps -ef |awk '/theprogram/{print $2}'`

which means if "theprogram" occurs anywhere in the line, then print field 2,
and kill tries to kill it. this is more likely to get the wrong line, or get
multiple lines.

basically if you can write a script that parses the output of ps and spits
out a single pid, then you can do "kill -HUP `script`" but what that script
amounts to depends entirely on criteria only you know such as what exactly
do you need to kill?
there is no one size fits all answer.

bahh, those were sco unix examples, here is the equivalent on freebsd:
(looking for lpd in this case)

kill -HUP `ps auxwww | awk '($11 == "/usr/sbin/lpd"){print $2}'`

--

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filePro BBx  Linux SCO  Prosper/FACTS AutoCAD  #callahans Satriani

Most system daemons store their PID in /var/run If you were looking to
kill natd, you would use kill -15 `cat /var/run/natd.pid`
--
Daniel Rudy
Reply to dcrudy at aol dot com.

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If you want to kill -HUP all processes whose ps output has the word
"luser" in it, you can do:

        kill -HUP `ps -auxwww | awk '/luser/ { print $2 }'

If you want to kill -HUP all the processes called inetd you can
do:

        killall -HUP inetd

David.