go环境变量配置 (GOROOT和GOPATH)

1. GOROOT就是go的安装路径
   在~/.bash_profile中添加下面语句:

GOROOT=/usr/local/go
export GOROOT

export $PATH:$GOROOT/bin;:

2. GOPATH:

go installgo get

cd ~
mkdir gopath

GOPATH=/Users/username/gopath

go get

export $PATH:$GOPATH/bin

• 创建一个go项目, 并且编译运行:

mkdir goproject
cd goproject
touch hello.go

在hello.go中输入:

package main
import "fmt"
func main() {
      fmt.Println("Hello, GO !")
}

go build./helloHello, GO !go run hello.go

source ~/.bash_profile