$ caribdis --help
NAME:
caribdis - CAR files passing by will be swallowed
USAGE:
caribdis [global options] [subcommand]...
DESCRIPTION:
caribdis is a command-line tool to work with CAR files.
COMMANDS:
cat Concatenate CAR files
ls List blocks or roots in CAR files
roots List roots in CAR files
...
...
help, h Shows a list of commands or help for one command
GLOBAL OPTIONS:
--help, -h show help