DuckDNS.sh

A Posix Shell Script (Bash-compatible) for tracking your IP address (at home, or on devices).

Install

mkdir -p ~/bin/

my_branch="v1"
curl -fsSL -o ~/bin/duckdns.sh \
    "https://raw.githubusercontent.com/BeyondCodeBootcamp/DuckDNS.sh/${my_branch}/duckdns.sh"

chmod a+x ~/bin/duckdns.sh

Usage

USAGE
    duckdns.sh <subcommand> [arguments...]

SUBCOMMANDS
    myip                         - show this device's ip(s)
    ip <subdomain>               - show subdomain's ip(s)

    list                         - show subdomains
    auth <subdomain>             - add Duck DNS token
    update <subdomain>           - update subdomain to device ip
    set <subdomain> <ip> [ipv6]  - set ipv4 and/or ipv6 explicitly
    clear <subdomain>            - unset ip(s)
    run <subdomain>              - check ip and update every 5m
    enable <subdomain>           - enable on boot (Linux) or login (macOS)
    disable <subdomain>          - disable on boot or login

    help                         - show this menu

Examples

duckdns.sh myip
duckdns.sh ip foo

duckdns.sh list
duckdns.sh auth foo

duckdns.sh update foo
duckdns.sh set foo 127.0.0.1
duckdns.sh set foo ::1
duckdns.sh set foo 127.0.0.1 ::1
duckdns.sh clear foo

duckdns.sh run foo
duckdns.sh enable foo
duckdns.sh disable foo

Configure

You'll need to create your account, subdomain, and token before you can use duckdns.sh.

1. Login to https://duckdns.org and create a subdomain, such as CHANGE-ME for CHANGE-ME.duckdns.org

2. Copy your DNS Token

3. Create your subdomain token env file:

   duckdns.sh auth CHANGE_ME

   or

   # create the env file
   mkdir -p ~/.config/duckdns.sh/
   touch ~/.config/duckdns.sh/CHANGE_ME.env
   
   # write your token to the env file
   vim ~/.config/duckdns.sh/CHANGE_ME.env

   DUCKDNS_TOKEN=xxxxxxxx-xxxx-4xxx-8xxx-xxxxxxxxxxxx
   

License

CC0-1.0 (Public Domain)
See https://creativecommons.org/publicdomain/zero/1.0/.