What are Subcommands and How Do They Work?

Subcommand is a command that is used to perform a specific task or action within a larger program or application. Subcommands are typically used in command-line interfaces (CLIs) and are often associated with a particular option or set of options that can be specified when invoking the command.

For example, the `ls` command in Unix-like operating systems has several subcommands, such as `ls -l` to list files in a long format, `ls -a` to list all files including hidden files, and `ls -t` to list files in a tabular format. Similarly, the `git` command in version control systems has subcommands like `git add`, `git commit`, and `git push` to perform specific actions related to adding, committing, and pushing changes to a repository.

Subcommands can be useful for organizing and structuring commands into smaller, more manageable pieces, making it easier for users to learn and remember the different options and actions available within a larger program or application.