How to Install Unison on macOS

Unison is a file-synchronization tool that allows you to keep files and directories in sync between different machines. This tutorial will guide you through the steps of installing Unison on your macOS machine.

Step 1: Download Unison

You can download Unison from the following URL: https://www.cis.upenn.edu/~bcpierce/unison/download/releases/stable/unison-2.48.4.tar.gz

Step 2: Install Xcode Command Line Tools

To install Xcode Command Line Tools, open Terminal and run the following command:

xcode-select --install

Step 3: Install Homebrew

Homebrew is a package manager that makes it easy to install other software packages on your macOS machine. To install Homebrew, open Terminal and run the following command:

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"

Step 4: Install OCaml

Unison is written in OCaml, so you will need to install it before you can install Unison. To install OCaml, open Terminal and run the following command:

brew install opam

Step 5: Install Unison

To install Unison, open Terminal and navigate to the directory where you downloaded the Unison tarball in Step 1. Then run the following commands:

tar -xzvf unison-2.48.4.tar.gz
cd unison-2.48.4
make UISTYLE=text
sudo make install

Step 6: Confirm Installation

To confirm that Unison was installed correctly, run the following command in Terminal:

unison -version

You should see output that includes the version number of Unison you just installed.

Congratulations, you have successfully installed Unison on macOS!