Take screenshot every 5 minutes

screencapture.sh

First, create a couple new folders:

cd ~/
mkdir Scripts
mkdir Screenshots
cd Screenshots
mkdir cron

cd ~/Scripts
vim screencapture.sh

Paste the following into the new file:

#!/bin/bash
TIMESTAMP=`date +%Y%m%d%H%M%s`
screencapture -x ~/Screenshots/cron/$TIMESTAMP.jpg

crontab -e

Create a new line by pasting the following:

*/05 * * * * ~/Scripts/screencapture.sh