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Getting Started with Golang - Mac OS X

Install Go (without brew)

Download Go from:

and download and install the .PKG package. Uninstall any previous install.

If a previous version was already installed, run:

sudo rm -rf /usr/local/go

Install Go (with brew)

brew install go

Create your GOPATH

The GOPATH is where all your Go code will live.

Run:

mkdir ~/go

Install Git

Download from:

Install go tools

Open a NEW Terminal (with new env vars), paste this in to install those sweet tools:

# if in zsh, do also: export PATH=/usr/local/go/bin:$PATH
export GOPATH=$HOME/go
go get -u github.com/nsf/gocode/...
go get -u github.com/rogpeppe/godef/...
go get -u golang.org/x/tools/cmd/...

You might see an error with godoc. Ignore it.

Install VisualStudio Code

VisualStudio Code has one of the best support for coding in Go. It has excellent plugins and works across platforms.

Download from:

After installation, do:

  • Hit Cmd+Shift+P and type in Install exte

  * Hit Enter to accept Install extensions

  * From the list, select Go, and click Install. Wait and then click Enable.

Setup Go environment variables

In VS Code, open ~/.profile.

If you use zsh, open ~/.zshrc instead.

Tweak your profile file to add these lines and save the file:

export GOPATH=$HOME/go
export PATH=$HOME/go/bin:$PATH

Setup of global Git configuration

Open the file ~/.gitconfig in VS Code.

Make sure similar lines are in there:

[user]
name = Your Name
email = [email protected]

Save & exit.

Setup GitHub authentication

Generate a new key

Run:

cat $HOME/.ssh/id_rsa.pub

If you see No such file or directory, continue on, otherwise skip this ssh-keygen step and go to Register your key on GitHub.

Still in "Git Bash", run:

ssh-keygen

Accept the default file name (hit ENTER). This key gives access to all your github repos. Secure it with a password when asked.

  • This password never leaves your computer, the key shouldn't either, but if lost, it is encrypted with this password.

Register your key on GitHub

Run:

cat $HOME/.ssh/id_rsa.pub

Go to:

Click "Add SSH key" (at the top right of the box).

Copy the ssh-rsa ....... in the Key input field. Don't fill in Title (it will use the key comment).

GitHub will ask you to confirm with your GitHub password.

Check out your first project, get ready to run and build

In a terminal, run:

mkdir -p $GOPATH/src/github.com/abourget
cd $GOPATH/src/github.com/abourget
git clone [email protected]:abourget/getting-started-with-golang

cd getting-started-with-golang

go install -v
getting-started-with-golang

Modify main.go in this repository and rerun go install -v to compile and getting-started-with-golang to re-execute the program.