As others have pointed out, lines end differently on UNIX and Windows. What you want to do is ensure that your input record separator (stored in the Perl special variable <c>$/<c/> {see perlvar}) is set correctly for the type of file you wish to read. 

local $/ = "\r\n"; # read with Windows-style endings
while (<FH>) {
   print "Found: $_"; 
}

[download]

(Quick note: the line endings stay on the line unless you chomp them off.)

There are other approaches if you don't know what line endings you will be dealing with. The easiest is to slurp the whole file and then split it yourself, though this is a bad idea for very large files. 

use File::Slurp;
my $content = read_file('my_file.txt');

for ( split(/[\r\n]+/, $content) ) {
   print "Found: $_\n"; 
}

[download]

This splits on any of \r, \n, or \r\n (or, incidentally, \n\r), taking care of Mac, Windows, or UNIX line endings. As a side effect, blank lines are skipped and all line endings are trimmed off. This may or may not be desirable.

<-radiant.matrix->
A collection of thoughts and links from the minds of geeks
The Code that can be seen is not the true Code
I haven't found a problem yet that can't be solved by a well-placed trebuchet

In reply to Re: File lines being treated as one. by radiantmatrix
in thread File lines being treated as one. by minixman

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.