$scp = Net::SCP->new( "hostname", "username" );
#with named params
$scp = Net::SCP->new( { "host"=>$hostname, "user"=>$username } );
$scp = Net::SCP->new( "hostname", "username" );
#with named params
$scp = Net::SCP->new( { "host"=>$hostname, "user"=>$username } );