Stand up every 20 minutes (mac os)

Foreword : Inspired by excellent post Initial task: creating notification every 20 minutes can be decomposed into two parts: create notification scheduled launch First subtask can be solved using this trivial script. standup.sh: #!/bin/sh # stand up notification osascript -e 'display notification "Stand up" with title "Healthy programmer"' say "Stand up" Second subtask (scheduled launch) can be solved using: daemon and agent mechanism. Create file: com.example.stand.up.plist and place it into ~/Library/LaunchAgents/.