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How to show a live clock in your Linux terminal (3 easy methods)

Don't want to look away from the terminal to check the time? Use these methods to add a live clock to your terminal!
Network World

Many ways to use the date command on Linux

You can change the command’s output format in many ways — report dates in the past and future, convert Unix and Linux timestamps into readable dates, display dates in UTC (Coordinated Universal Time), ...