cannot download, $GOPATH not set
[Update: as of Go 1.8, GOPATH defaults to $HOME/go, but you may still find this useful if you want to understand the GOPATH layout, customize it, etc.] The official Go site discusses GOPATH and how to lay out a workspace directory. export GOPATH=”$HOME/your-workspace-dir/” — run it in your shell, then add it to ~/.bashrc or … Read more