Setup Golang

$ curl -O https://dl.google.com/go/go1.11.4.linux-amd64.tar.gz

$ tar -xvf go1.11.4.linux-amd64.tar.gz

$ sudo mv go /usr/local/

cat <<EOF >>~/.profile
export GOPATH=\$HOME/work
export PATH=\$PATH:/usr/local/go/bin:\$GOPATH/bin
EOF

$ mkdir $HOME/work

$ source ~/.profile

$ go version

go version go1.11.4 linux/amd64

$ mkdir -p $GOPATH/src/github.com/ansilh/golang-demo

$ vi $GOPATH/src/github.com/ansilh/golang-demo/main.go

package main
import "fmt"

func main(){  
 fmt.Println("Hello World.!")
}

go install github.com/ansilh/golang-demo

$ golang-demo

Hello World.!