How to Install nsupdate.info on OpenBSD

nsupdate.info is a dynamic DNS service that allows you to dynamically update your IP address on a DNS server. In this tutorial, we will guide you through how to install nsupdate.info on OpenBSD.

Prerequisites

Before you begin, you must have the following:

A working OpenBSD installation.
Root user access.

Steps

First, ensure that your OpenBSD system is up to date by running the following command:
```
sudo pkg_add -uU
```
Next, download the nsupdate.info package using the following command:
```
sudo pkg_add nsupdate.info
```
Once the package is downloaded, you will need to create a configuration file by running the following command:
```
sudo touch /etc/nsupdate.info.conf
```
Edit the configuration file by adding your nsupdate.info username and password using the following command:
```
sudo nano /etc/nsupdate.info.conf
```
Replace "username" and "password" with your actual nsupdate.info username and password.
```
username=username
password=password
```
Save the changes to the configuration file by pressing CTRL + X, then Y, then ENTER.
Create a script to update your IP address using nsupdate.info. Create the file using the following command:
```
sudo touch /usr/local/bin/nsupdate.info.sh
```
Edit the script using the following command:
```
sudo nano /usr/local/bin/nsupdate.info.sh
```
Add the following contents to the script, replacing "yourdomain.com" with your actual domain name:
```
#!/bin/sh
/usr/local/bin/nsupdate.info -d yourdomain.com
```
Save the changes to the script by pressing CTRL + X, then Y, then ENTER.
Make the script executable using the following command:

sudo chmod +x /usr/local/bin/nsupdate.info.sh

Finally, add the script to your crontab to run every 5 minutes using the following command:

sudo crontab -e

Add the following line to the crontab, replacing "yourdomain.com" with your actual domain name:

*/5 * * * * /usr/local/bin/nsupdate.info.sh > /dev/null 2>&1

Save the changes to the crontab by pressing CTRL + X, then Y, then ENTER.

That's it! Now, your IP address should update automatically on nsupdate.info every 5 minutes.