Expanding on JavaFan's reply, use chomp to remove the line terminator and also use the three-argument form of open with lexical rather then package filehandles and check whether the open was successful, looking at $OS_ERROR if not. It is also not advisable to have scalars and arrays with the same name as that will only lead to confusion.

...
chomp( my $list = <> );
open my $urlsFH, '<', $list
   or die "open: < $list: $!\n";
my @urls = <$urlsFH>;
...
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I hope this is helpful.