How To Install openntpd on Ubuntu 22.04
Introduction
In this tutorial we learn how to install openntpd on Ubuntu 22.04.
What is openntpd
openntpd is:
NTP, the Network Time Protocol, is used to keep the computer clocks synchronized. It provides the ability to sync the local clock to remote NTP servers and can act as NTP server itself, redistributing the local clock.
This is an alternative implementation of the NTP software, made by the OpenBSD Project. It makes use of privilege separation, only implements a subset of the NTP protocol, adjusting the rate of the clock to synchronize the local clock.
Alternative packages which provide similar functionality are ntp and chrony.
There are three methods to install openntpd on Ubuntu 22.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install openntpd Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install openntpd using apt-get by running the following command:
sudo apt-get -y install openntpd
Install openntpd Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install openntpd using apt by running the following command:
sudo apt -y install openntpd
Install openntpd Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Ubuntu. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install openntpd using aptitude by running the following command:
sudo aptitude -y install openntpd
How To Uninstall openntpd on Ubuntu 22.04
To uninstall only the openntpd package we can use the following command:
sudo apt-get remove openntpd
Uninstall openntpd And Its Dependencies
To uninstall openntpd and its dependencies that are no longer needed by Ubuntu 22.04, we can use the command below:
sudo apt-get -y autoremove openntpd
Remove openntpd Configurations and Data
To remove openntpd configuration and data from Ubuntu 22.04 we can use the following command:
sudo apt-get -y purge openntpd
Remove openntpd configuration, data, and all of its dependencies
We can use the following command to remove openntpd configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge openntpd
References
Summary
In this tutorial we learn how to install openntpd package on Ubuntu 22.04 using different package management tools: apt, apt-get and aptitude.
