A simple tool for MacOS to combat eyestrain.

Eyesaver displays a system dialog every twenty minutes to remind you to look away from the screen for twenty seconds.

First, save the eyesaver.sh file to some location where you can find it. I saved it to my ~/Scripts directory.

From there, cd into the directory where you saved the file and run the command

chmod +x eyesaver.sh

to make the script executable.

If the script executed successfully, navigate to the ~/Library/LaunchAgents directory and download the com.samarth.eyesaver.plist file. Rename the file to something else if you prefer.

To configure the plist file for your machine, edit line 10 where it says

<string>/Users/samarth/Scripts/eyesaver.sh</string>

and change the path to point where you saved the eyesaver.sh script.

After that, save the plist file and run

launchctl load com.samarth.eyesaver.plist

while still in the ~/Library/LaunchAgents directory. If you see a system dialog pop up, it worked. To unload the job, simply run

launchctl unload com.samarth.eyesaver.plist

This link was really helpful for figuring out how to use the launchd utility.