The first thing you need to do is install pv.
sudo apt update && sudo apt install pv

• 1. Download .sh files
  

  • 1a. git clone https://github.com/The-Exterminator/PiShrink-to-Crontab.git
    
  • 1b. cd PiShrink-to-Crontab/
    

• 2. Install PiShrink and Backup
  

  • 2a. chmod +x *.sh
    
  • 2b. sudo mv *.sh /usr/local/bin/
    

• 3. Change BACKUP_PATH="/media/Backup
  

• DO NOT CHANGE /$(get_codename)/${HOSTNAME}
  

  • 3a. sudo nano /usr/local/bin/Backup.sh
    

• 4. Delete folder
  

  • 4a. cd
    
  • 4b. sudo rm -r PiShrink-to-Crontab
    

• 5. chmod /YOU/BACKUP/FOLDER/
  

  • 5a. chmod 755 /YOU/BACKUP/FOLDER/
    

• 6. sudo nano /etc/crontab
  Insert -> 59 23 * * 1 root /usr/local/bin/Backup.sh
  (Makes backup Monday at 23.59) Or look here and set your own crontab
  

• To @Drewsif : For his magical scripts!!! - Read here for more information