I humbly ask for help on the following matter:

I have a little piece of code, that isn't working properly. It's supposed to take all files from a directory "mail" and print the first line from each of them. But as I run it, it displays the following warning: "use of uninitialized value in print...etc", and, obviously, doesn't print anything. I know, the solution must be simple, but I just can't find it. Thank you in advance, and here's the code:

#/usr/bin/perl
use strict;
use warnings;

opendir (DIR, "\mail");
foreach my $file (readdir DIR){
    open WRITE, '<', '$file';
    my $text = <WRITE>;
    print $text;
}

[download]

In reply to Read first line from each file in a directory 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.