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How to Make Your Linux PC Wake From Sleep Automatically

Want to put your Linux PC into sleep or hibernate mode and have it automatically wake at a specific time? You can easily do this with the rtcwake command, included by default with most Linux systems.

This can be useful if you want your computer to do something at a specific time, but don’t want it running 24/7. For example, you could put your computer to sleep at night and have it wake up before you do to perform some downloads.