Run:

% go run helloworld.go

Build executable:

% go build helloworld.go

Install binary:

% go install helloworld.go

This will put the "helloworld" binary in the $GOPATH/bin folder:

~/go/bin/01_helloworld

NOTE: When using modules you can simply run:

% go build % go install

Now, with this being on Github, if I run:

% go get github.com/johansteyn/learn/go/01_helloworld

Then it will download all of my "learn" repository to:

~/go/pkg/mod/github.com/johansteyn/[email protected]

Then, if I run:

% go install github.com/johansteyn/learn/go/01_helloworld@latest

It will build my app and place the binary in the $GOPATH/bin folder:

~/go/bin/01_helloworld

Note that the name of the binary includes "01_", which is different from running install earlier. I assume go takes the folder name as the default name of the module when modules are not being used.