Programming Technology

Masoud’s notes about Golang part 4 – Golang Commands

Execute project

go run .

Create an executable file of the project (build)

go build .

Download and install external package

go get {package path}

#### eg.
go get

Display Current GOPATH

go env GOPATH

install new go package

go install test-app

Update package

go get -u test-app

List Packages Alongside Dependencies

go list
go list ./...

Display Version Information

go version

Maintain Module Dependencies

The go mod tidy command allows us to add missing dependencies or delete unused modules. This go command helps in maintaining module dependencies and keep your applications as lean as possible. Simply run the following simple command to do this.

Make sure to run this from your project’s root directory. You can check the go.mod file to see which dependencies were added or deleted. The -v flag, if used, causes tidy to display which modules were removed to the standard error.

go mod tidy [-v]

Verify Module Dependencies

go mod verify

Display Why Packages/Modules are Needed

You can see why certain modules or packages are required in your application. This is useful if you are working with someone else’s code or are trying to figure out what certain things do in a specific project. The “why” command of the mod tool allows us to do this

The first one is the general syntax, and the second one is an example. It prints out why the language and encoding packages are required in your application.

go mod why [-m] [-vendor] packages...
go mod why

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