根据子父节点关系生成血缘关系

下载启动确认

go 1.17.2.windows-amd64.msi	Installer	Windows	x86-64	124MB

C:\Program Files\Go

编辑C:\Program Files\Go\bin%GO_HOME%

go version

	Microsoft Windows [版本 10.0.22000.258]
	(c) Microsoft Corporation。保留所有权利。
	C:\Users\Administrator>go version
	go version go1.17.2 windows/amd64

helloworld.go

package main
import "fmt"

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

---

go version

go version go1.13.4 darwin/amd64

3、配置环境变量

source ~/.bash_profile

export GOPATH=$HOME/go
export GOROOT=/usr/local/go