升级Ubuntu 18.4 的golang版本
1,删除旧版本的golang # apt-get remove golang-go
# apt-get remove --auto-remove golang-go
# apt-get purge --auto-remove golang-go
2,安装最新的golang1.14 # add-apt-repository ppa:longsleep/golang-backports
# apt update
# apt install golang-go
# go version
go version go1.……