use strict;
use warnings;
use LWP;
use HTTP::Cookies::Netscape;

my $url = "https://example.com";
my $cookie_jar = HTTP::Cookies::Netscape->new(
    file  => "/path/to/cookies.txt",
    );
my $browser = LWP::UserAgent->new( );
$browser->cookie_jar( $cookie_jar );
my $resp = $browser->get($url);

print $resp->content, "\n";