You update the initial file the same way you would update a text file, or any other type of file: in this case once you've read the file close it, then open in for writing ans print the output to this filehandle.

The way you use open, the fact that you use sysread are kind of unusual, so either you have a very personal style or you have little Perl experience and you are cargo-culting your way through the problem. You may want to read a little bit about Perl if you need to use it properly. Invest in "Learning Perl", or read the docs (at least the part on open and print, type perldoc -f open to get them

In reply to Re^3: How can I replace a line (tag) in an XML file? by mirod
in thread How can I replace a line (tag) in an XML file? by perlPractioner

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.