I think that you have answered your question for yourself. What do I mean by that?

"Some of the parameters are stored elsewhere in the script as scalars and would need to be evaluated at the time of use."

That's what eval is for! It evaluates things at run time. I'm thinking the last line should be: system(eval{$hash{command1}});

But I did not test it, YMMV, objects in mirror may be closer than they appear, any bit rot caused by using this is to be blamed upon alpha particles and not me.

Updated the code snippet (eval needed braces and not parentheses). I did test it, but as always: YMMV, objects in mirror may be closer than they appear, any bit rot caused by using this is to be blamed upon alpha particles and not me.

In reply to Re: possible to evaluate scalars stored in a string? by Mr. Muskrat
in thread possible to evaluate scalars stored in a string? by emilford

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.