This is because you're only matching a line at a time, whereas you want to match the whole file e.g 
## die() if we can't open the file
open(F, "prof.xml") or die("ack: $!");

## join together all the lines into a single string
my $xml = join '', <F>; # see. also C<local $/>

## assign $data to the capture in the regex
## also note the use of the 's' modifier (see. man perlre)
my($data) = $xml =~ m{(<emp>.*</emp>)}s;

[download]
But if you're working with XML you'll be wanting an XML parser to make your life easier. Firstly there's the basic XML::Parser, but that'll probably be a little clunky for your needs so you may want to use XML::Simple instead.
HTH

_________
broquaint

In reply to Re: Unable to get more than one line by broquaint
in thread Unable to get more than one line by winefm

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.