You don't show what you've tried so far, so I'll give you a general description of how I'd approach the problem. The problem can be split up into three parts:

  1. Loop through each line of the file
  2. Check whether the current line matches your target ("starts with 'Article'")
  3. Output the reformatted line

The code for each part also is relatively self-contained:

  1. #!perl -w
use strict;

# loop through the file
while (<>) {
    print
};

    [download]
  2. if (/^Article\b/) {
    s/\s*$//; # remove trailing whitespace and newlines
    print "Line [$_] is a heading.";
};

    [download]
  3. $_ = "Article 1 News";
print "\\subsection*{$_}";

    [download]

You'll have to assemble these parts into a coherent whole and/or ask questions about the parts that are still unclear to you. If you chose a different approach, it will help us to help you better if you show your approach.

In reply to Re: Simple Text Manipulation by Corion
in thread Simple Text Manipulation by pseingalt

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.