Display Command-Line Tool Usage
Explore how to use Go's flag package to display automatic and custom usage information in command-line applications. Understand handling of invalid flags, custom help messages, and improving user interaction with your CLI tool.
We'll cover the following...
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.
Command-line tool
Command-line tools should be helpful. But sometimes the user doesn’t know how to ...