Delete \n characters from line range in text file

Question

Let\'s say we have a text file with 1000 lines.

How can we delete new line characters from line 20 to 500 (replace them with space for example)?

My try:

Answer 1

Here's a perl version:

my $min = 5; my $max = 10;
while () {
    if ($. > $min && $. < $max) {
        chomp;
        $_ .= " ";
    }
    print;
}

__DATA__
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Output:

1
2
3
4
5
6 7 8 9 10
11
12
13
14
15

It reads in DATA (which you can set to being a filehandle or whatever your application requires), and checks the line number, $.. While the line number is between $min and $max, the line ending is chomped off and a space added to the end of the line; otherwise, the line is printed as-is.