How To Install unison on Ubuntu 20.04

In this tutorial we learn how to install unison on Ubuntu 20.04. unison is file-synchronization tool for Unix and Windows

Introduction

In this tutorial we learn how to install unison on Ubuntu 20.04.

What is unison

Unison is a file-synchronization tool for Unix and Windows, written in OCaml. It allows two replicas of a collection of files and directories to be stored on different hosts (or different disks on the same host), modified separately, and then brought up to date by propagating the changes in each replica to the other.

Unison offers several advantages over various synchronization methods such as CVS, Coda, rsync, Intellisync, etc. Unison can run on and synchronize between Windows and many UNIX platforms. Unison requires no root privileges, system access or kernel changes to function. Unison can synchronize changes to files and directories in both directions, on the same machine, or across a network using ssh or a direct socket connection.

Transfers are optimised using a version of the rsync protocol, making it ideal for slower links. Unison has a clear and precise specification, and is resilient to failure due to its careful handling of the replicas and its private structures.

There are three ways to install unison on Ubuntu 20.04. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.

Install unison Using apt-get

Update apt database with apt-get using the following command.

sudo apt-get update

After updating apt database, We can install unison using apt-get by running the following command:

sudo apt-get -y install unison

Install unison Using apt

Update apt database with apt using the following command.

sudo apt update

After updating apt database, We can install unison using apt by running the following command:

sudo apt -y install unison

Install unison 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 unison using aptitude by running the following command:

sudo aptitude -y install unison

How To Uninstall unison on Ubuntu 20.04

To uninstall only the unison package we can use the following command:

sudo apt-get remove unison

Uninstall unison And Its Dependencies

To uninstall unison and its dependencies that are no longer needed by Ubuntu 20.04, we can use the command below:

sudo apt-get -y autoremove unison

Remove unison Configurations and Data

To remove unison configuration and data from Ubuntu 20.04 we can use the following command:

sudo apt-get -y purge unison

Remove unison configuration, data, and all of its dependencies

We can use the following command to remove unison configurations, data and all of its dependencies, we can use the following command:

sudo apt-get -y autoremove --purge unison

References

Summary

In this tutorial we learn how to install unison on Ubuntu 20.04 using different package management tools like apt, apt-get and aptitude.