Bash script help

moodupani · 08-17-2005, 07:59 PM

Hi people,

I am practicing bash script.
I couldn't do this my book question.

How to do this?
Write a bash script that kills all the processes executing a certain command at a certain moment in time. For example, kill all processes running mail. Unless you have a super user privilege, you can kill only your own processes.

I would really appreciate, if someone help me.

Thanks.

kencaz · 08-17-2005, 08:03 PM

Sounds like Homework... Shame on you....!!!

KC

carl.waldbieser · 08-17-2005, 10:13 PM

You just need to think about what you need to do and write the code:

+ Somehow get a list of the processes you want (is there a command that does this?).
+ kill each of those processes.

FYI, there are actually commands on several GNU/Linux distributions that already do this. Your prof just wants to see you learning your lessons. This should be pretty simple for you. Try it, you might learn something!

moodupani · 09-02-2005, 07:36 PM

Hi ,
I am having problem running this script.
can u fix it to correct format pls?

write a bash script that kills all the processes executing a certain command at a certain moment in time. For example, kill all processes running mail. Unless you have a super user privilege, you can kill only your own processes.

#!/bin/sh

kill `ps -ef | grep $1 | awk '{ print $2 }'`

Tinkster · 09-02-2005, 10:25 PM

You sure are a slow learner, eh?

Please stop asking homework questions. If you have an
approach to a solution feel free to come back and ask
for an explanation as to what you're doing wrong.

WE WON'T BE DOING YOUR WORK FOR YOU.

Cheers,
Tink

crabboy · 09-02-2005, 11:43 PM

moodupani,

I've merged your two identical homework posts. Do not repost identicial questions in separate threads in an attempt to get someone to do your homework for you.

eddiebaby1023 · 09-03-2005, 04:39 PM

Quote:

Originally posted by moodupani
Hi ,
I am having problem running this script.
can u fix it to correct format pls?

write a bash script that kills all the processes executing a certain command at a certain moment in time. For example, kill all processes running mail. Unless you have a super user privilege, you can kill only your own processes.

#!/bin/sh

kill `ps -ef | grep $1 | awk '{ print $2 }'`

Hint: if you're having trouble figuring out what your script is (or isn't!) doing, split it into temporary files which you can examine at your leisure to see what each part of the pipeline is doing.

Code:

ps -ef >tmp1
grep $1 <tmp1 >tmp2
awk '{print $2}' <tmp2 | tee tmp3

Now you can run your script and see exactly what each stage is producing. That should give you a clue about what you need to fix.