This tutorial will show you how to setup a flow in Node-RED to send a command through SSH to your Mac and make it sleep on command.
ssh keygen on your Node-RED instance, and then ssh-copy-id user@host to send that key to your mac. (You will change user and host with your username for your mac and it's IP.I'm not going to go over installing Node-RED, however here's an up to date guide on how to install it if needed.
Here's a screenshot of how I have Node-RED configured for this setup. On the http in node on the left, I've setup a get method with the url /mac-sleep . Connected to that, I have a http response node which is configured to give the http status of 200 when there's an http input. Finally, I have an exec node configured with the command ssh user@host 'bash sleep.sh'.
To setup your Mac for this, you will want to open a new terminal window and run cd ~ to make sure you are in your user's home directory. To create and edit the file you are going to make, run nano sleep.sh. Nano is the text editor and sleep.sh is going to be the file name. Paste in the commands below into sleep.sh.
# Run Sleep Command
osascript -e 'tell application "System Events" to sleep'
# Exit SSH session / terminal
exitYou can type CTRL+X, <enter button> and then Y, <enter button> to save and close the file. Now, run the command chmod +x sleep.sh. to make it executable.
That should be all. Comment on this post if you have questions or issues.