Read perlre. If you're in a rush read perlrequick. And if you find the learning curve too steep, take a step back and start with perlretut
Note, this isn't perfect. It assumes your end of line character is a linefeed. It also doesn't handle linefeeds in the 4th field. But then in the sample provided, it wasn't significant.
use strict;
use warnings;
my $data;
localscope: {
local $/;
$data = <DATA>;
my $i=1;
while ($data =~ /\G((?:(?:[^,]*),){3}(?:[^\n]*\n))/g) {
my $entry = $1;
print "$i $entry";
$i++;
}
}
1;
__DATA__
"123", "DEF123","this
is
test","C:\Abhinav\test.jpg"
"456", "DEF456","this is test","C:\Matt\test.jpg"
"726", "DEF726","this is test","C:\Matt\test.jpg"
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