go mod 常用命令

1. download

# download modules to local cache(下载依赖包)
go mod download

2. edit

# edit go.mod from tools or scripts（编辑go.mod)
go mod edit

3. graph

# print module requirement graph (打印模块依赖图)
go mod graph

4. init

# initialize new module in current directory（在当前目录初始化mod）
go mod init

5. tidy

# add missing and remove unused modules(拉取缺少的模块，移除不用的模块)
go mod tidy

6. vender

# make vendored copy of dependencies(将依赖复制到vendor下)
go mod vendor

7. verify

# vverify dependencies have expected content (验证依赖是否正确）
go mod verify

8. why

# explain why packages or modules are needed(解释为什么需要依赖)
go mod why

原文：执行 go help mod

Go mod provides access to operations on modules.

Note that support for modules is built into all the go commands,
not just 'go mod'. For example, day-to-day adding, removing, upgrading,
and downgrading of dependencies should be done using 'go get'.
See 'go help modules' for an overview of module functionality.

Usage:

        go mod <command> [arguments]

The commands are:

        download    download modules to local cache
        edit        edit go.mod from tools or scripts
        graph       print module requirement graph
        init        initialize new module in current directory
        tidy        add missing and remove unused modules
        vendor      make vendored copy of dependencies
        verify      verify dependencies have expected content
        why         explain why packages or modules are needed

Use "go help mod <command>" for more information about a command.