How To Install ntp-doc on Ubuntu 18.04
Introduction
In this tutorial we learn how to install ntp-doc on Ubuntu 18.04.
What is ntp-doc
ntp-doc is:
NTP, the Network Time Protocol, is used to keep computer clocks accurate by synchronizing them over the Internet or a local network, or by following an accurate hardware receiver that interprets GPS, DCF-77, NIST or similar time signals.
This package contains HTML documentation for the ntp packages (ntp, ntpdate). Since there are no substantive man pages for ntp’s programs and configuration files, this package is desirable for any setup beyond the simple default configuration.
There are three methods to install ntp-doc on Ubuntu 18.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install ntp-doc Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install ntp-doc using apt-get by running the following command:
sudo apt-get -y install ntp-doc
Install ntp-doc Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install ntp-doc using apt by running the following command:
sudo apt -y install ntp-doc
Install ntp-doc 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 ntp-doc using aptitude by running the following command:
sudo aptitude -y install ntp-doc
How To Uninstall ntp-doc on Ubuntu 18.04
To uninstall only the ntp-doc package we can use the following command:
sudo apt-get remove ntp-doc
Uninstall ntp-doc And Its Dependencies
To uninstall ntp-doc and its dependencies that are no longer needed by Ubuntu 18.04, we can use the command below:
sudo apt-get -y autoremove ntp-doc
Remove ntp-doc Configurations and Data
To remove ntp-doc configuration and data from Ubuntu 18.04 we can use the following command:
sudo apt-get -y purge ntp-doc
Remove ntp-doc configuration, data, and all of its dependencies
We can use the following command to remove ntp-doc configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge ntp-doc
References
Summary
In this tutorial we learn how to install ntp-doc package on Ubuntu 18.04 using different package management tools: apt, apt-get and aptitude.
