DuckDNS

Duck DNS crontab script

Prerequisites

• bash
• crontab
• sponge
  • Debian: sudo apt-get install moreutils
  • Fedora: sudo yum install moreutils

Setup

NOTE: This setup is similar to the instructions provided by Duck DNS (https://www.duckdns.org/install.jsp?tab=linux-cron)

1. Download duck.sh script and place it in a desired location. For the sake of this setup, /DuckDNS/duck.sh will be used.
2. Update script to provide DOMAINS and TOKEN based on your Duck DNS information. Also update LOG_FILE and LOG_LENGTH to desired log location and log max line count respectively.
3. Make script executable
   • chmod 700 duck.sh
4. Add script to crontab
   • crontab -e
   • */5 * * * * ~/DuckDNS/duck.sh >/dev/null 2>&1
5. Success!