I noticed that the "end-of-line" for each line is changed from "0d 0a" to "0d 0d 0a"

Windows converts 0x0a to 0x0d 0x0a on output unless the output file handle has been marked binary (as with binmode).

On input, it does the reverse, converting 0x0d 0x0a to 0x0a; if the file hasn't been marked binary..

What is happening in your case is that when the text file is written, 0x0a becomes 0x0d 0x0a. When you read it in as binary, no conversion is done so you get 0x0d 0x0a in memory...

But when you print it to the text mode screen, the automatic conversion is done (again), so 0x0d 0x0a becomes 0x0d 0x0d 0x0a as you are seeing.

When you omit the binmode, the 0x0d 0x0a read from disk, become just 0x0a in memory; and then when you print it out, they get converted back to 0x0d 0x0a and everything looks normal.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority". I knew I was on the right track :)
In the absence of evidence, opinion is indistinguishable from prejudice. Not understood.

In reply to Re: Answer: How do I read an entire file into a string? by BrowserUk
in thread How do I read an entire file into a string? by vroom

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.