How would I implement a program options with a commands style? Something similar to git and other version control systems:

./a.out ls --pattern '[a-z][0-9]+\.txt' --count 7

Here I run a.out with command "ls". The "ls" command has a particular options description.

./a.out read --count Dracula

Here I run a.out with command "read". This command also has options of its own, and just to emphasize it I show that the --count option has a different value type here.

./a.out --help

Show me general help.

./a.out help ls

Does the library support this style? How would I get it to work?

Matan