[NBLUG/talk] top

[Walter Hansen]

Hmmm. Been a while since I played with shell scripts. I probably should
take the class some time.

I got:

top -b -d 30 | egrep 'Cpu(s)|load average|PID|nusd'

to work but when I try to redirect output to a file it doesn't:

top -b -d 30 | egrep 'Cpu(s)|load average|PID|nusd' > toplog.txt

and it also didn't work when I did this:

nohup top -b -d 30 | egrep 'Cpu(s)|load average|PID|nusd' > toplog2.txt &

or when I put the above command in a file made it +x and then ran it.

Although in both of the last cases I could see the top process running.

Hmmm. I guess I'd better go kill those processes.....


> On Wed, Dec 15, 2004 at 10:41:41AM -0800, sms at sonic.net wrote:
>> > Anybody know if there is a way to log top information or similar
>> > information. I'm interested in a couple of processes and their CPU
>> usage
>> > over about a half hour time period. I'd also like the overall system
>> > usage over the period. I can probably watch it manually most nights,
>> > but I'd like to know whether I'm there or not.
>>
>> Is there any reason you don't want to use a simple script?  E.g.
>>
>> touch topper
>> date >> topper
>> echo " " >> topper
>> while (whatever-condition-suits-your-need)
>> do
>>   top n 1 >> topper
>>   echo "=======================================================" >>
>> topper
>>   sleep 30   # That's a snapshot every 30 seconds; change as needed
>> done
>
> You can also run top in "batch" mode with -b -- this produces dumb
> terminal
> output.
>
>  -Scott
>
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