Late Night Shutdown Prompt

README.md

Prompt yourself every 5 minutes after 7 PM if you really want to still be using your computer or not. This helps to avoid late night device use. You can dismiss the dialog every 5 minutes. If you don't dismiss it within 15 seconds your computer will shutdown.

Installation

1. Add the shutdown.applescript to your local bin folder ~/.local/bin/shutdown.applescript. You may have to create this directory first with mkdir -p ~/.local/bin. Make the script executable with chmod +x ~/.local/bin/shutdown.applescript.
2. Allow your user to use sudo to invoke shutdown without prompting for a password by adding a sudoers file:

echo "$USER ALL=NOPASSWD: /sbin/shutdown" | sudo tee /etc/sudoers.d/shutdown > /dev/null

3. Install the crontab via crontab -e.

crontab

# Run every 5 mintes from 7 pm until 4 am
*/5 19-23,0-3 * * * ~/.local/bin/shutdown.applescript

shutdown.applescript

#!/usr/bin/osascript

try
    set userResponse to display dialog ¬
        "Do you want to shut down your Mac?" ¬
        buttons {"Cancel", "Shutdown"} default button "Cancel" ¬
        giving up after 15
on error errMsg number errNum
    if errNum = -128 then
        -- User canceled the dialog
        return
    else
        -- Some other error occurred, re-raise it
        error errMsg number errNum
    end if
end try

if gave up of userResponse then
    -- User didn't respond within 15 seconds, proceed to shut down
    do shell script "sudo /sbin/shutdown -h now"
else if button returned of userResponse is "Shutdown" then
    -- User clicked Shutdown
    do shell script "sudo /sbin/shutdown -h now"
end if