# fan in-out
exec ["exec1", "exec2", "exec3", "exec4", "exec5", "exec6", "exec7",] {
	cmd => "sleep 10s",
	shell => "",
	timeout => 0,

	Meta:sema => ["s:2",],
}

Exec["exec1"] -> Exec["exec4"]
Exec["exec2"] -> Exec["exec4"]
Exec["exec3"] -> Exec["exec4"]
Exec["exec4"] -> Exec["exec5"]
Exec["exec4"] -> Exec["exec6"]
Exec["exec4"] -> Exec["exec7"]