go-mod:tldr:81345

The command "go mod download" is used in the Go programming language to download the dependencies defined in the go.mod file of a project.

When you work on a Go project, you often need to use external packages or modules that are not part of the standard library. These external modules are specified in the go.mod file, which is a file that manages the project's dependencies.

The "go mod download" command is used to download all the dependencies mentioned in the go.mod file. It fetches the necessary packages and stores them in the module cache, which is a local directory on your machine where Go stores all the downloaded modules.

After running "go mod download," you can use the downloaded packages in your Go project by importing them in your code. Go will automatically handle the retrieval and linking of these dependencies when you build or run your project.

This command is typically used when setting up a new project or when you want to ensure that you have all the necessary dependencies locally available, even if you are not actively building or running the project at the moment.