This gist checks to see if JSS enrollment is complete, and attempts to force enrollment until sucessful.

checkEnrollment.sh

#!/bin/bash
# Check to make sure the machine has enrolled before continuing
/bin/echo "Checking enrollment..."
until [ ! -f "/Library/Application Support/JAMF/FirstRun/Enroll/enroll.sh" ]
    do
        /bin/echo "Machine is not enrolled. Trying enrollment."
        
        # Attempt enrollment
        /Library/Application\ Support/JAMF/FirstRun/Enroll/enroll.sh
        
        # Test if enrollment completed, sleep and try again if not
        if [ ! -f "/Library/Application Support/JAMF/FirstRun/Enroll/enroll.sh" ]
        	then
        		break
        	else 
        		sleep 30
        fi
    done
/bin/echo "Enrollment complete"
exit 0