How to Install Unison on Linux System


Unison is a free, cross-platform utility that allows us to maintain two sets of file replicas (instances) on two different computers or various disks of the same system. It updates both replicas of a distributed directory structure, unlike straightforward mirroring or backup programs. The conflicting updates are found and shown. Unison can connect any two online computers using either a direct socket link or tunneling over an encrypted ssh connection. It works well across sluggish links like PPP connections and is conservative with network bandwidth. Using a compression mechanism similar to rsync, transfers of minor updates to huge files are optimized. Read on to learn how to install Unison on a Linux system.

You can find other guides here: How to install Rust on a Linux System and How to Install MongoDB on a Linux System, How to install Rust in a Linux System also, How to install Gradle on Ubuntu again, How to Install Apache OpenOffice on Ubuntu  and How to install and configure Microsoft Teams on Ubuntu

Unsupported Usage of Unison

Due to file permissions, USB sticks formatted as VFAT (FAT32, FAT16, etc.) do not work with Unison. A work around could be by giving USB sync a try. You may also try running with the ‘-perms 0’ option or adding a line like “perms = 0” to your /.unison/*.prf file as a workaround.

Why Install Unison on Linux

There are several benefits when comparing Unison to various synchronization techniques like CVS, Coda, rsync, Intellisync, etc. You can synchronize and run numerous UNIX platforms on Unison. For Unison to work, no kernel modifications, system access, or root privileges are necessary. On the same machine, across a network, whether through ssh or a direct socket connection, Unison may synchronize changes to files and folders in both directions. The rsync protocol has a variant that optimizes transfers, making it perfect for slower links. Because it handles the copies carefully and uses private structures, Unison has a clear and accurate specification and is resilient to failure.

Installing Unison on Linux

There are two ways to get this done, using apt and using aptitude.

before using any of the methods, make sure that you have updated the operating system with the command below:

apt update 

After updating the apt database, we can install unison with aptBy performing the following command:

sudo apt -y install unison
How to install Unison on a Linux System-unison
unison installed with apt

Install unison Using aptitude

On Ubuntu, aptitude is typically not installed by default. Use the following command to install aptitude

sudo apt install aptitude
How to install Unison on a Linux System-aptitude

We can install unison using aptitude by running the following command:

sudo aptitude -y install unison
How to install Unison on a Linux System-aptitide-unison
aptitude install Unison

As we know we already installed from method one, so it says it’s already installed, as shown above. If this were not true, we would have been able to install Unison easily,

How To Uninstall Unison on Ubuntu

We can run the following command to uninstall only the unison package:

sudo apt remove unison

Remove unison configuration, data, and all of its dependencies 

To remove unison configurations, data, and all of their dependencies, execute the following command:

sudo apt-get -y autoremove --purge unison


We can install Union by following the series of commands stated above. With the abovementioned steps, you can install Unison on a Linux system without hassle.

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