# koji > Interact with kojihub. > Some subcommands such as `build`, `tag-build`, `download-build`, `buildinfo`, `call`, etc. have their own usage documentation. > More information: . - Execute a koji subcommand: `koji {{subcommand}}` - Introduce yourself to test connectivity with koijhub: `koji moshimoshi` - Display help about global options: `koji {{[-h|--help]}}` - Display help to get all available commands: `koji help` - Display help for a specific subcommand (like `build`, `tag-build`, `download-build`, `buildinfo`,`call`, etc.): `koji {{subcommand}} {{[-h|--help]}}` - Display version: `koji version`