apply_updates.sh

#!/bin/bash

# Apply Updates
defaults write /Library/Preferences/com.apple.SoftwareUpdate AutomaticCheckEnabled -bool true
sleep 1
output="$(softwareupdate --install --all 2>&1)"
sleep 1
defaults write /Library/Preferences/com.apple.SoftwareUpdate AutomaticCheckEnabled -bool false

# restart and notifcy user if needed
grep -i -q "restart" "$output"
if [ $? -eq 0 ] ; then
  echo "Restarting in 2 minute and notifying user..."
  jamf DisplayMessage -message "Your machine has installed updates that require a restart. Please save your work and quit any applications you have open. Your machine will restart in 2 minutes."
  shutdown -r +2
else
  echo "Restart not required"
fi