I think the speed differences can be neglected. When running time uptime and time cat /proc/uptime the variations are much larger than the difference between the respective execution times.

But why do you want to re-invent the wheel? There are tools like Nagios and collectd (which supports perl plugins) that can be used to obtain and collect such data.

In reply to Re: get system info using perl by moritz
in thread get system info using perl by saurabh.hirani

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