I'm writing a ruby script to gather statistics from a Raspberry Pi. All the proj... | Hacker News

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		atmosx on Feb 5, 2014 \| parent \| context \| favorite \| on: Follow-up on "Linux server monitoring tools" I'm writing a ruby script to gather statistics from a Raspberry Pi. All the projects I've seen so far rely on Perl/Python/PHP scripts which are executing shell commands to extract informations every X minutes. I wonder, isn't there some sort of API to access in Unix-based systems data like CPU usage, memory usage, etc in a more natural way?

dsr_ on Feb 5, 2014 [–]

Why, yes, there is.

Go run strace on ps or top and see what they call.

I'll save you some time: it turns out to be stat() and open() on things in /proc.

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