I recently had to stop cron jobs until I carry out some operations on the raspberry pi, i found a quick solution by issuing these commands:
sudo /etc/init.d/cron stop
And to start it again:
sudo /etc/init.d/cron start

I recently had to stop cron jobs until I carry out some operations on the raspberry pi, i found a quick solution by issuing these commands:
sudo /etc/init.d/cron stop
And to start it again:
sudo /etc/init.d/cron start