installing julia

Follow their instructions to install the latest version of julia, currently v1.5.2.

On a Mac, I created a link to the Julia executable in a directory on my PATH, to be able to start julia from a terminal:

ln -s /Applications/Julia-1.5.app/Contents/Resources/julia/bin/julia /usr/local/bin/julia

To test that your installation worked, try

$ julia --version
julia version 1.5.2
$ julia
               _
   _       _ _(_)_     |  Documentation: https://docs.julialang.org
  (_)     | (_) (_)    |
   _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 1.5.2 (2020-09-23)
 _/ |\__'_|_|_|\__'_|  |  Official https://julialang.org/ release
|__/                   |

julia> 2+2
4

then click Control-D to quit julia, or exit().

To get help on Julia, use the extensive and well-written documentation

Jupyter can use Julia as its backend kernel
Pluto creates notebooks similar to Jupyter’s, but “reactive” and in pure julia: no external installation. We will see later how to install Pluto.
in VS Code: get the “Julia” extension to recognize .jl files as julia scripts, and Markdown Julia to get syntax highlighting in julia code blocks
in Atom:
- get the package atom-language-julia
- or get the Juno Integrated Development Environment (IDE)
see also JuliaEditorSupport for other editors (vim, emacs) and further developments

julia intro
installing packages