I have previously managed to do this with one file

That's a good place to start. Might I suggest the following approach to help extend this to several files?

  1. Take your working code and move it into a subroutine (see perlsub) which takes the filename to be read as the only argument. Confirm the script still works as before.
  2. Now simply call the subroutine twice in the script with a different filename each time. Confirm that the script produces the output you expect for two input files.
  3. Now write your loop to find all the files in the directory and just call the subroutine from within the loop. You should now have output from all the files.

Portioning up the code into smaller blocks (such as using subroutines) helps you to work on small parts of a larger problem in isolation. If you have specific problems with any particular part feel free to ask. Remember that an SSCCE is best. Good luck.


🦛


In reply to Re: Extract information from several files in directory by hippo
in thread Extract information from several files in directory by Sofie

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.