hello/README.md
| 1 | # hello |
| 2 | |
| 3 | Greets people from the command line. |
| 4 | |
| 5 | ## Usage |
| 6 | |
| 7 | | Argument | Description | |
| 8 | | -------- | ----------- | |
| 9 | | `NAME` | Optional. The name to greet. Only the first argument is read. Defaults to the `USER` environment variable, then to `world`. | |
| 10 | |
| 11 | ```sh |
| 12 | $ cargo run -- Ada |
| 13 | Hello, Ada! |
| 14 | ``` |
| 15 | |
| 16 | With no name it greets whoever is signed in. |
| 17 | |
| 18 | ## Develop |
| 19 | |
| 20 | ```sh |
| 21 | cargo test |
| 22 | ``` |