安装Go 1.11，关联 golang

Binary Distributions

Official binary distributions are available at https://golang.org/dl/.

After downloading a binary release, visit https://golang.org/doc/install or load doc/install.html in your web browser for installation instructions.

  1. tar -C /usr/local -xzf go$VERSION.$OS-$ARCH.tar.gz
  2. Add /usr/local/go/bin to the PATH environment variable.
    adding this line to your /etc/profile (for a system-wide installation) or $HOME/.profile: 
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      export PATH=$PATH:/usr/local/go/bin

  3. 设置环境变量：

    在 /etc/profile 添加：

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     export GOROOT=/usr/local/go 
 export GOBIN=$GOROOT/bin
 export GOPKG=$GOROOT/pkg/tool/linux_amd64 
 export GOARCH=amd64
 export GOOS=linux
 export GOPATH=$HOME/workspace/go
 export PATH=$PATH:$GOBIN:$GOPKG:${GOPATH//://bin:}/bin

windows

下载msi（如，go1.11.5.windows-amd64.msi）直接安装，执行路径都自动添加到path配置，默认安装在 c:\go

Mac OS

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brew install golang

Installing Go from source

https://golang.org/doc/install/source

检查是否安装成功

  1. Create your workspace directory, %USERPROFILE%\go.
    (If you’d like to use a different directory, you will need to set the GOPATH environment variable.)

  2. make the directory src/hello inside your workspace

  3. in that directory create a file named hello.go 
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    package main

import "fmt"

func main() {
  fmt.Printf("hello, world\n")
}
  4. 编译 
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     C:\> cd %USERPROFILE%\go\src\hello
 C:\Users\Gopher\go\src\hello> go build
  5. 运行 C:\Users\your-name\go\src\hello> hello