Process environment.
| Name | Description |
|---|---|
| arg_count | Returns the number of command line arguments. |
| args | Returns an iterator over the command line arguments. |
| env | Returns an iterator over the environment variables. |
| get_cwd | Retrieves the current working directory. |
| path | Returns an iterator over the paths in the |
| set_cwd | Sets the current working directory. |
| var | Retrieves the value of an environment variable, if any. |