while (<>) {
  print;
  if  (m/TheLineBefore/){
    # read the line to be replaced
    my $line = <>;
    # do something with it
    $line =~ s/1/0/;
    # print the new version
    print $line;
 }
}
__DATA__
test data
more
TheLineBefore
LocalCompilerPresent=1
more stuff

[download]
This is a frequent question, see also the search results for next line.

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

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