terminal-notifier is a command-line tool to send macOS User Notifications, which are available on macOS 10.8 and higher.

(And it works really good! Very handy.)

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For Blockchain Startups, Switzerland’s ‘Crypto Valley’ is No New York - CoinDesk https://t.co/BUCd3fG22q via @nuzzel thanks @aantonop
—Panayotis Vryonis (@vrypan) Mon Oct 31 16:25:43 +0000 2016