tn(terminal-notifier)

tn is a wrapper for terminal-notifier to make a terminal notification after some command is done

Installation

I'll try to add this to homebrew ASAP

It depends on terminal-notifier, so you have to install it first with

$ brew install terminal-notifier

Then copy bin/tn to your PATH like /usr/local/bin

Just prepend tn to your command

$ tn rake -T

You'll receive the notification if it successes

However, for a failed command like this

$ tn rake foo

you'll get