Joshua L. Laughner - Part 1, Lesson 1: Installing Git

Part 1, Lesson 1: Installing Git

The first step to using Git is, of course, to install it. It may already be installed on your system. We'll check first.

Windows
Mac
Linux

Windows

Is it installed?

There are two ways to check if it is installed:

Type "Git" in your search box. If you see "Git GUI" and "Git Bash" as options, it is installed.
Right click in the main area of the file explorer as shown below. If you see "Git GUI" and "Git Bash" in the context menu, it is installed.

Note that this is also the easiest way to launch Git Bash (which is what we will be using). When you launch it via the right-click menu, the bash terminal starts in this folder.

Installing

To install, download the Windows package from https://git-scm.com/downloads. Launch the installer like a normal Windows installer.

The first page of the installer will pop up with a number of options to enable or disable.

An image showing the first page of the Git Windows installer

The three you definitely want checked are:

Git Bash Here
Git GUI Here
Associate .git* configuration files with the default text editor

You may uncheck Git LFS if you want, but it doesn't interfere with anything, so I would leave it checked. The "Associate .sh files to be run with Bash" is one you should uncheck if you already have .sh files that should be run with something else - this is uncommon for Windows, so it's usually okay to leave it checked.

The next page will ask what editor you want to use for your commit messages. The default (vim) is, as the warning says, not very intuitive. I recommend choosing one of the other editors, which are normal GUI editors (whereas vim is in the terminal). If you already have one of the ones listed installed, use that. Otherwise, Notepad++ is the most lightweight and so will launch the quickest. If you don't use any of the other ones, then I recommend Notepad++. Note: you won't be able to click "Next" if you have selected an editor that is not installed. In that case, cancel the Git installation, install your desired editor, then try Git again.

An image showing the dialogue to select an editor for Git

An image showing the dialogue to select an editor for Git with the dropdown extended

There will be several more dialogues, I recommend keeping the defaults for all of them.

Mac

Is it installed?

Open your Terminal. The easiest way is to do a Spotlight search (with Cmd+Spacebar) and search for "Terminal" - it'll be the one with a mostly black box as an icon. When it launches, type git --version. If it prints something like git version 2.28.0 on the next line (your number may differ), then it is installed. If it prints git: command not found then you will need to install it.

Installing

The main Git page for Mac (https://git-scm.com/download/mac) gives several options. Although installing via Homebrew is the first option, if you don't have Homebrew already installed, that might be more than you want to deal with. (I will say, having Homebrew installed can be very helpful in data science.) Either the Xcode or binary installer methods are easiest. The binary installer is just like any other app installer. To install with Xcode, in the Terminal type:

xcode-select --install

and this should install Git along with some other command line tools. Note: you do not need the full Xcode package, only the command line tools.

Linux

Is it installed?

Most Linux distributions come with Git preinstalled. You can check by opening your Terminal and typing git --version. If it prints something like git version 2.28.0, then it is installed. If you see git: command not found or something like The package git is not installed. You can install it with..., then it needs installed.

Installing

The main Git Linux downloads page (https://git-scm.com/download/linux) lists how to install it for many Linux distributions. In all cases you will install it through your package manager (e.g. apt, yum, etc.)