$ ./executable-with-subcommands-using-thor.rb
Tasks:
  executable-with-subcommands-using-thor.rb help [TASK]  # Describe available tasks or one specific task
  executable-with-subcommands-using-thor.rb subA [TASK]  # Execute a task in namespace subA
  executable-with-subcommands-using-thor.rb subB [TASK]  # Execute a task in namespace subB
  executable-with-subcommands-using-thor.rb test         # test in CLI

$ ./executable-with-subcommands-using-thor.rb help
Tasks:
  executable-with-subcommands-using-thor.rb help [TASK]  # Describe available tasks or one specific task
  executable-with-subcommands-using-thor.rb subA [TASK]  # Execute a task in namespace subA
  executable-with-subcommands-using-thor.rb subB [TASK]  # Execute a task in namespace subB
  executable-with-subcommands-using-thor.rb test         # test in CLI

$ ./executable-with-subcommands-using-thor.rb subA help test
Usage:
  executable-with-subcommands-using-thor.rb subA test

test in SubCommandA