Memory, disk and CPU usage via Command line

Question

Memory, disk and CPU usage via Command line

Are there shell commands to access the memory, cpu and disk usage as i cannot find any reference in my O'Reilly Mac OS X in a Nutshell book (Panther version)?

MacBook Pro 15" 2.16GHz Intel Core 2 Duo, Mac OS X (10.5)

Posted on Sep 8, 2008 2:48 AM

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Answer 1

Sep 8, 2008 3:08 AM in response to Craig Roberts1

top - memory and cpu

df - disk free space

du - disk usage

Check out the man page for each.

And diskutil info /

Message was edited by: Mark Jalbert

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Answer 2

Sep 8, 2008 3:34 AM in response to Mark Jalbert

Has anyone parsed top to be available to periodically store values in a text file?

My idea is to build up a profile of application usage during the day showing when applications were run, how many open and what impact is on the system resources. I don't think there are any utilities (free or otherwise) out there that do this.

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Answer 3

Sep 8, 2008 3:39 AM in response to Craig Roberts1

Sorry, I read man page and see that top -l1 will show just the one sample.

If anyone has done this kind of script parsing and is happy to share then I'd be most grateful of the time-saving.

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Answer 4

Sep 8, 2008 4:29 AM in response to Craig Roberts1

sar? the system comes with 2 scripts

/usr/lib/sa/sa{1,2}

that can be used to automatically collect and write the
information to a file. See sar(1) and sadc(8).

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Answer 5

Sep 8, 2008 6:27 AM in response to Nils C. Anderson

Excellent. Thanks.

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