Display Command-Line Tool Usage
Learn about the multiple uses of the flag package and how it can be useful for command-line tools.
We'll cover the following...
The flag package
The flag package contains many other useful options, including managing command-line flags of different data types, automatic help generation, and the FlagSet type for
managing subcommands.
Before moving on, you might want to check the documentation for the flag package
if
you want to explore some of these additional options.
Now let’s present usage information to the user so they know how to use our tool.