2009/9/27 Harry Putnam <rea...@newsguy.com>:
> Will it make any difference in loading time or cpu resource usage to
> use the `tail' command like 'qx/tail -n30 $file/' as apposed to something
> in straight perl like this example that prints the last 30 lines of $log:
>

Not absolute that which is better.
But `tail` will launch an external process that is generally slower.
You may benchmark them to see the difference, using the module like:

http://search.cpan.org/~pangj/Net-Squid-ReverseProxy-0.02/lib/Net/Squid/ReverseProxy.pm

//ye

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