dyndns-refresh

a small bash-script to refresh a dyn A entry. Should work for many providers.

features

• simple bash-script (you don't have to install a program)
• logging (the response of the provider will be logged)

usage

• clone the repository (for example in your home directory) and make dyndns.sh executeable

git clone https://github.com/sedrubal/dyndns-refresh.git && cd dyndns-refresh
chmod +x dyndns.sh

• copy the config.cfg.example to config.cfg and edit it. You only have not to provide every variable:

cp config.cfg.example config.cfg
editor config.cfg
# provide following configs:
# - $url
# - $loggerpath
# - $logfile

• set file permissions:

sudo chown -R $USER:$GROUP .
sudo chmod 400 config.cfg

• check, if the script works

./dyndns.sh -v
tail $logfile

• create a crontab (crontab -e -u $USER) like this:

 0/15 * * * * /home/$USER/dyndns.sh 2>&1
#  │  └─┴─┴─┴─ every hour, day, month, weekday
#  └────────── when minute == 15

functionality

• a crontab will trigger this script (default: every 15 minutes; you can change the interval)
• this scripts uses curl to request the update-website of the provider. He will notice your ip.
• the output will be saved as log

dependencies

• unix based os
• curl
• cron
• logger
• (logrotate)

supported providers

• joker.com
• no-ip.com ?
• ...

not implemented yet / todo

• (automatic installation and support for crontab)
• check if parameter $1 == "-v" (bash is so complicated)

license

dyndns-refresh by sedrubal is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.