How to update Golang

For updating golang, you need to first uninstall golang. Check where is the go directory. Run which go. The output might be similar to:-

souvik:Development souvikhaldar$ which go /usr/local/bin/go

Delete the directory as is the output above.

sudo rm -rf /usr/local/bin/go

Now install the required version. Visit this link

Check the version by running :-

souvik:~ souvikhaldar$ go version go version go1.12.3 darwin/amd64