go env -w GOPROXY=direct go env -w GOSUMDB=off go env -w GOPROXY=https://goproxy.io,direct go env -w GO111MODULE="on" go env
go env -w GOPROXY=direct go env -w GOSUMDB=off go env -w GOPROXY=https://goproxy.io,direct go env -w GO111MODULE="on" go env