So it has to search for a line, replace 0 in the following line with a 1 and save that in the file.

You replace one line in a file by rewriting the whole file( at least that is the easiest way). So you can use one of the two snippets above (I believe both work, but there seems to be dissent, so check first) to read your .ini file and write the results to a new file. Check if it is good and then copy it over the original .ini file.

If you feel confident in the script you can also automatically have Perl overwrite the input file with the -i switch. 

perl -i rep.pl config.ini

[download]

In reply to Re^2: Search and replace next line by Thilosophy
in thread Search and replace next line by perlnewbie2000

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.