I have the following line of code in a script:

 .Pattern = "(^c|l|j|s|o)\d{4}[_](\d*?.dat|\d*?.idx)"

This is being used to delete any files starting with C, L, J, S or O followed by the '_' and 0 or more digits then the extension. My issue is I need to modify this single line to delete all files as stated above AND files that do not have the '_' and 0 or more numbers in it.

Problem is I do not want to delete a files named C1234ABC.IDX. 1 letter, 4 digits, followed by either the extension, or _# or _## then extension. I have been playing around with:

 .Pattern = "(^c|l|j|s|o)\d{4}\w*?(\d*?.dat|\d*?.idx)"

but this did not do anything at all. Any ideas or suggestions to help resolve this would be great.

Thanks!!

In reply to Regular Expression Assistance by jaacmmason

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.