-- Idea: lock the screen automatically when ambient brightness shifts if it changes enough when I walk away, also only do this if the right external monitor is connected.
-- > hs.brightness.ambient()
-- 2019-07-24 11:25:15: -- Loading extension: brightness
-- 1257
--
-- > hs.brightness.ambient()
-- 1257
--
-- > hs.brightness.ambient()
-- 1257
--> hs.brightness.ambient()
-- 1006
--
-- > hs.brightness.ambient()
-- 1006
--
-- > hs.brightness.ambient()
-- 1006
--
-- > os.execute('sleep 2')
-- true	exit	0
--
-- > os.execute('sleep 2'); print('test')
-- 2019-07-24 11:33:46: test
--
--
-- > os.execute('sleep 2'); hs.brightness.ambient()
--
--
-- > os.execute('sleep 2'); print(hs.brightness.ambient())
-- 2019-07-24 11:34:20: 1175