How to download and setup jack
Open terminal and run command
git clone https://github.com/rumlang/jack.git
git clone is used to create a copy or clone of jack repositories.
You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with jack https://github.com/rumlang/jack/archive/master.zip
Or simply clone jack with SSH
[email protected]:rumlang/jack.git