I faced this problem when I was revising modulemaker, the command-line utility that comes with ExtUtils::ModuleMaker. There are default values that come with the module; the user can save personal default values to a file which will override the original default values; and the user can then supply values via command-line options or the interactive mode.

It was quite challenging to figure it all out, and I haven't had to pay attention to it for several months, so I can't recite how it goes off the top of my head. But you're welcome to poke around in the source and see if it gives you some leads.

Jim Keenan

In reply to Re: command line args - a chicken and egg problem by jkeenan1
in thread command line args - a chicken and egg problem by pileofrogs

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":



  • 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! —
  • 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:
    & &amp;
    < &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.