This reply didn't mention two other things with the original code that should be pointed out. First, you are not using -T (read perlsec and perlrun). Second, you aren't using -w or strict (perldoc strict and perlrun). You should NEVER NEVER NEVER NEVER create a file based on raw user input which you are doing. This is BAD BAD BAD. Learn now before you learn the hard way. You seem to use tr// to help make this safe, but it isn't the best way, and safer programming is better programming. Look at Untaint.pm for untainting of the input and read perlsec, twice. Also, I see no reason why you are using $_. Also, please skim this node but really pay attention to the comments I made on that node following it. It deals with file locking. You have no file locking here, and possibly do not need it, however you should take a look and familiarize yourself with it if you are using text files and not a DB.
swiftone is right about looking at CGI::Carp. It is a great tool for debugging CGI, just add this in your script:

use CGI::Carp qw(fatalsToBrowser);

and you will get more useful error messages to the browser, most of the time at least :)

Cheers,
KM


In reply to RE: Re: Opening a file error by KM
in thread Opening a file error by Anonymous Monk

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.