Drop to the tmp directory and download the Inadyn zip file.
cd /tmp
wget http://cdn.dyndns.com/inadyn.zip
Unzip the file and copy the linux version of the inadyn file located in /bin/linux to the /usr/bin directory.
unzip inadyn.zip
cp inadyn/bin/linux/inadyn /usr/bin/inadyn
We must change the file permission
chmod 755 /usr/bin/inadyn
Create or edit the configuration file for inadyn
nano /etc/inadyn.conf
In the inadyn.conf file must look something like this.
--username yourdyndnsusername --password yourdyndnspassword --alias yoursite1.dyndns.com --alias yoursite2.dyndns.com --update_period 6000 --background
Save the configuration file and change the file permission.
chmod 640 /etc/inadyn.conf
Now, we want inadyn to start every time the system rebooted.
export EDITOR=nano
crontab -e
In the crontab, add this at the very first line.
@reboot inadyn
Done! We can run Inadyn instantly by entering inadyn command in the terminal window.