I have been told that this is possible but I don't quite understand how to implement that with getopt::std.
That's because you should use Getopt::Long. Also 
open STDOUT, ">> $log_dir/$log_file

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Don't open files like this if you don't know what Perl does with two-argument open. Especially if $log_dir and $log_file come from user input. Do it like this: 
open STDOUT, '>>', $log_dir/$log_file

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Consider using File::Spec::Functions for manupilating file names. 
&filesize;

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Don't call functions like this if you don't know what it actually does. Call them like this: 
filesize();

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use warnings; instead of -w. Also use strict;

In reply to Re: getopt::std to pass arguments to command line help by Anonymous Monk
in thread getopt::std to pass arguments to command line help by hextor

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