Yes of course there is a way. Try this: 

open FILE, "<whatever.txt" or die "Oops $!\n";
my @content = <FILE>;
close FILE;
for my $i ( 0 .. $#content -1 ) {
    $content[$i] = $some_edit if $content[$i+1] eq $some_next_line_bit
+;
}

open FILE, ">whatever.txt" or die "Oops $!\n";
print FILE @content;
close FILE;

[download]

There are plenty of other ways to do it. You could revise the code above using the +< operator to open the file for R/W and use a seek FILE, 0, 0 to reset the pointer for the write to save a couple of lines. If the file is huge you could use a while loop and temp file thusly: 

my $last = '';
open FILE, "<whatever.txt" or die "Oops $!\n";
open TMP, ">tmp.txt" or die "Oops $!\n";
while (<FILE>) {
    $last =~ s/this/that/ if $_ eq $some_next_line_bit;
    print TMP $last;
    $last = $_;
}
print TMP $last; # print the very last line
close FILE;
close TMP;
rename "tmp.txt", "whatever.txt";
unlink "tmp.txt";

[download]

cheers

tachyon

s&&rsenoyhcatreve&&&s&n.+t&"$'$`$\"$\&"&ee&&y&srve&&d&&print

In reply to Re: edit text by tachyon
in thread edit text by polr

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