A cron job is a Linux utility used for scheduling a task to be executed in the specific time according to its schedule at designated time. Learn how to easily use cron jobs for automation on Ubuntu 14.04 in this tutorial.
Combine cardio with core work to reap the flat-belly benefits of both types of sweat sessions in this Better-Body Challenge. This workout alternates between jumping rope and standing ab exercise, so you can tone your belly while burning serious calories in just 20 minutes. We use one eight-pound dumbbell in this workout to increase the toning potential of each exercise. No weights? No problem. This workout will still be effective without them.