-s, --split=N Download a file using N connections. If more
than N URIs are given, first N URIs are used and
remaining URLs are used for backup. If less than
N URIs are given, those URLs are used more than
once so that N connections total are made
simultaneously. The number of connections to the
same host is restricted by the
--max-connection-per-server option. See also the
--min-split-size option.