Install ddclient using following command
sudo apt-get install ddclient
Skip all installation steps (Don't worry we can configure after installation)
After successful installation open following file
/etc/ddclient.conf
and add following lines with your no ip credentials
protocol=dyndns2
use=web, web=checkip.dyndns.org/, web-skip="Current IP Address:"
server=dynupdate.no-ip.com
login=< YOUR NO-IP USERNAME>
password='< YOUR NO-IP PASSWPORD>'
<YOUR HOST>.no-ip.org