notify

Place this script somewhere in your PATH (echo $PATH) and make sure it's executable (chmod +x).

$ notify -h
usage: notify [-h] message [title]

Generate OS X notifications from terminal

positional arguments:
  message     notification text
  title       title (optional)

optional arguments:
  -h, --help  show this help message and exit

License

Distributed under the MIT License with no attribution required.