01.Go环境搭建

0.镜像

0.1.国外镜像

https://golang.org/dl/

0.2.中国镜像

https://golang.google.cn/dl

0.3.中文网站

https://studygolang.com/dl 

1.下载Go安装

# 构建多版本体系
$ sudo mkdir -p /usr/local/gosdk
$ cd /usr/local/gosdk
# 下载
$ wget https://dl.google.com/go/go1.16.5.darwin-amd64.tar.gz

2.解压

# 路径
$ pwd
/usr/local/gosdk

# 解压
$ tar -zxf go1.16.5.darwin-amd64.tar.gz

# 查看目录内容
$ ll                                                                                                                                                                                         total 264192
drwxr-xr-x@ 20 xxx  admin        640 Jun  4 01:18 go
-rw-r--r--@  1 xxx  staff  130223787 Jul  5 23:59 go1.16.5.darwin-amd64.tar.gz

# 重命名
$ sudo mv -p go go1.16.5
$ mv go /usr/local

# 软连接
$ pwd
/usr/local
sudo ln -s gosdk/go1.16.5 go

3.验证

$ go env                                                                                                                                                                                           
GO111MODULE=""
GOARCH="amd64"
GOBIN="/usr/local/go/bin"
GOCACHE="/Users/xxx/Library/Caches/go-build"
GOENV="/Users/xxx/Library/Application Support/go/env"
GOEXE=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/xxx/Works/workdirs/github/godev/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/xxx/Works/workdirs/github/godev"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org,direct"
GOROOT="/usr/local/go"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/go/pkg/tool/darwin_amd64"
GOVCS=""
GOVERSION="go1.16.5"
GCCGO="gccgo"
AR="ar"
CC="clang"
CXX="clang++"
CGO_ENABLED="1"
GOMOD="/dev/null"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
GOGCCFLAGS="-fPIC -arch x86_64 -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/var/folders/gm/d5s654153r98z5wmjp8n_yl80000gn/T/go-build2458542179=/tmp/go-build -gno-record-gcc-switches -fno-common"

4.知识总结