go 语言环境搭建

1. sudo tar -C /usr/local -xzf go1.15.linux-amd64.tar.gz

2. vi /etc/profile

export PATH=$PATH:/usr/local/go/bin

3. go proxy (china only)

go env -w GO111MODULE=on

go env -w GOPROXY=https://goproxy.io,direct

4. go imports

go get -v golang.org/x/tools/cmd/goimports