Actually, the server that doesn't work was using Tie:File 0.95, whereas my local machine is using 0.93 (as well as Perl 5.6.1, just like the server)

I uninstalled 0.95 and reinstalled w/ 0.93 just to see, same dice.

I've made the change you suggested, and unfortunately dumb luck isn't with me. See below for the results. (the file.txt file starts out with 7 identical lines, and ends as you see) 

bash-2.05a$ vi tie
bash-2.05a$ ./tie
Use of uninitialized value in read at /usr/lib/perl5/5.6.1/Tie/File.pm
+ line 699, <FH> line 7.
Use of uninitialized value in read at /usr/lib/perl5/5.6.1/Tie/File.pm
+ line 699, <FH> line 7.
bash-2.05a$ cat file.txt
this is a really long line of text (sortof)
 TestText
TestText TestText TestText
TestText TestText TestText
TestText TestText TestText
TestText TestText TestText
TestText TestText TestText
bash-2.05a$

[download]
Note the complaints about line 699 of File.pm.....

In reply to Re: Re: Re: Re: Re: Re: Tie::File strangeness with unshift by u914
in thread Tie::File strangeness with unshift by u914

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.