You have an interesting case here. Personally, I don't see anything wrong with the approach you've started with, and I think trying to stuff subroutine refs into the GetOpt::Long usage to handle option dependencies is just going to obfuscate things. You don't need to go there, IMO. (I would especially advise against any approach the requires the options to be given in a specific order; this goes against the nature of option usage as most command-line users understand it.)

Apart from that, I have just a few nit-picks:

• Running the script with no args looks like a no-op; this should be treated the same as using the "-h|--help" option.
• You might consider working on the pod a bit... see if you can indicate some of the option dependencies in the synopsis, and/or re-order the list of options so the dependencies are more salient and make sense on first glance.
• For heaven's sake, provide an appropriate DESCRIPTION that at least gives an idea about what happens when the various settings are activated.
• Your "make_dirs" sub could be using the Perl-internal "mkdir" and "chmod" functions, rather than running a bunch of system calls, and I'm not sure what you gain by using  !system "ls ..." or die as opposed to, say,  ( -d "..." ) or die
• You have a "get_line" sub that is never called; I think it's very good that you never actually use this sub, and it would be fine to remove it from the script.

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.