terminal-notifier

Send macOS User Notifications. More information: https://github.com/julienXX/terminal-notifier.

Send a notification (only the message is required):

terminal-notifier -group {{tldr-info}} -title {{TLDR}} -message '{{TLDR rocks}}'

Display piped data with a sound:

echo '{{Piped Message Data!}}' | terminal-notifier -sound {{default}}

Open a URL when the notification is clicked:

terminal-notifier -message '{{Check your Apple stock!}}' -open '{{http://finance.yahoo.com/q?s=AAPL}}'

Open an app when the notification is clicked:

terminal-notifier -message '{{Imported 42 contacts.}}' -activate {{com.apple.AddressBook}}