```console
$ teller show
[new (dotenv)]: EMPTY = tr***
$ teller put --providers new --map-id one NEW_VAR=s33kret
$ teller show
[new (dotenv)]: EMPTY = tr***
[new (dotenv)]: NEW_VAR = s3***
$ teller put --providers new --map-id one TRICKYVAR="-A"
$ teller show
[new (dotenv)]: EMPTY = tr***
[new (dotenv)]: NEW_VAR = s3***
[new (dotenv)]: TRICKYVAR = -A***
```