Do this if what only what you require is the bit between: 
print grep { !/process/  } <>;

[download]
perl <script>.pl <input>.txt

[download]

prints
ksjhfk
kfh

[download]

You could also put this in an array 
my @process = grep { !/process/  } <>;

[download]
However this would just be each element for each line. If you wanted them grouped you need something more complex using assertions ( if you do it the inefficent way like i have )
John,

UPDATE: This would group them 
{
    local undef $/;
    print split /process \s \w+ (.+?) end \s process/xms, <>;
}

[download]

P.S. Don't actually use these methods of doing it, There just other ways to do it.

In reply to Re^3: read multi lines of a file in perl by binf-jw
in thread read multi lines of a file in perl by sharan

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.