Justin Ma 25349a1eac
Add an example for default command to get an env var with fallback (#5874)
* Add an example for `default` command to get an env var with fallback

* update test

* update test
2022-06-25 17:27:54 +08:00
..
2022-04-20 08:50:14 -05:00
2022-06-24 16:47:00 +12:00