Where is the cron / crontab log? / How to enable the Cron Log?

The software utility cron also known as cron job is a time-based job scheduler in Unix-like computer operating systems. Users that set up and maintain software environments use cron to schedule jobs (commands or shell scripts) to run periodically at fixed times, dates, or intervals. It typically automates system maintenance or administration—though its general-purpose nature makes it useful for things like downloading files from the Internet and downloading email at regular intervals.
HDDTemp crontab every hour in to file

In this article we are going to create a txt file and in it we are going to store the HDD temperature for every hour, a utility that gives info about the HDD.