GO language Environment Setup

March 20, 2018

Here I’ll write about setting up a GO language environment in MacOS and CentOS.

Installation

MacOS

brew install go
brew install dep

# Setup Environment
echo 'export GOPATH=$HOME/go' >> ~/.bash_profile
echo 'export PATH=$PATH:$GOPATH/bin' >> ~/.bash_profile
source ~/.bash_profile

CentOS

# Check https://golang.org/dl/ for the download link
curl -sO https://dl.google.com/go/go1.10.linux-amd64.tar.gz
mkdir $HOME/goroot
tar -C $HOME/goroot -xzvf go1.10.linux-amd64.tar.gz

# Setup Environment
echo 'export GOROOT=$HOME/goroot/go' >> ~/.bash_profile
echo 'export GOPATH=$HOME/go' >> ~/.bash_profile
echo 'export PATH=$PATH:$GOROOT/bin:$GOPATH/bin' >> ~/.bash_profile
source ~/.bash_profile

# Install "dep"
go get -d -u github.com/golang/dep
cd $(go env GOPATH)/src/github.com/golang/dep
DEP_LATEST=$(git describe --abbrev=0 --tags)
git checkout $DEP_LATEST
go install -ldflags="-X main.version=$DEP_LATEST" ./cmd/dep
git checkout master

Project Setup

All projects should reside inside GOPATH directory, the default is “$HOME/go”, of course you can change it to whatever you like.

Each of your projects should be located under the following directory:

$GOPATH/src/__user_id__/project_name

For “user_id” I usually use my github account URL, or my own domain, e.g.:

$GOPATH/src/github.com/rayed/project_name
$GOPATH/src/rayed.com/project_name

As an example of new project setup, I run the following commands:

# Create new directory for the project and switch to it
mkdir -p $GOPATH/rayed.com/project1
cd $GOPATH/rayed.com/project1

# Create README.md file
touch README.md

# Initialize git
git init 
# git should ignore "vendor" directory, it should be managed by "dep"
echo "/vendor" >> .gitignore

# Initialize "dep" for dependencies management
dep init 
# Always use "dep ensure" command to dependencies
#   instead of "go get"
dep ensure -add github.com/foo/bar github.com/baz/quux