Introduction
In this tutorial we learn how to install chrony on Kali Linux.
What is chrony
chrony is:
It consists of a pair of programs:
chronyd: This is a daemon which runs in background on the system.
It obtains measurements (e.g. via the network) of the system’s offset
relative to other systems and adjusts the system time accordingly. For
isolated systems, the user can periodically enter the correct time by
hand (using ‘chronyc’). In either case ‘chronyd’ determines the rate
at which the computer gains or loses time, and compensates for this.
Chronyd implements the NTP protocol and can act as either a client or
a server.
chronyc: This is a command-line driven control and monitoring program.
An administrator can use this to fine-tune various parameters within
the daemon, add or delete servers etc whilst the daemon is running.
There are three methods to install chrony on Kali Linux. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install chrony Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get updateAfter updating apt database, We can install chrony using apt-get by running the following command:
sudo apt-get -y install chronyInstall chrony Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install chrony using apt by running the following command:
sudo apt -y install chronyInstall chrony Using aptitude
If you want to follow this method, you might need to install aptitude on Kali Linux first since aptitude is usually not installed by default on Kali Linux. Update apt database with aptitude using the following command.
sudo aptitude updateAfter updating apt database, We can install chrony using aptitude by running the following command:
sudo aptitude -y install chrony
How To Uninstall chrony on Kali Linux
To uninstall only the chrony package we can use the following command:
sudo apt-get remove chrony
Uninstall chrony And Its Dependencies
To uninstall chrony and its dependencies that are no longer needed by Kali Linux, we can use the command below:
sudo apt-get -y autoremove chrony
Remove chrony Configurations and Data
To remove chrony configuration and data from Kali Linux we can use the following command:
sudo apt-get -y purge chrony
Remove chrony configuration, data, and all of its dependencies
We can use the following command to remove chrony configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge chrony
Dependencies
chrony have the following dependencies:
References
Summary
In this tutorial we learn how to install chrony package on Kali Linux using different package management tools: apt, apt-get and aptitude.
