install liunx
wget https://storage.googleapis.com/golang/go1.17.5.linux-amd64.tar.gz
tar -xvf go1.8.1.linux-amd64.tar.gz -C /usr/local/
sudo vi /etc/profile
export GOROOT=/usr/local/go
export GOPATH=/go # bin pkg src
export PATH=$PATH:$GOROOT/bin:$GOPATH/bin
go env -w GOPROXY=https://goproxy.cn/,direct
git clone https://github.com/golang/text.git $GOPATH/src/golang.org/x/text