The CAS Server Command-line Utility has two help options that display the usage syntax. The --help option displays a summary of the tasks. The --help-detail option displays detailed usage information for all the tasks. For example:

C:\Endeca\CAS\<version>\bin>cas-cmd.bat --help
usage: cas-cmd <task-name> [options]
[Inspecting Installed Modules]
  getAllModuleSpecs
  getModuleSpec
  listModules
[Managing Crawls]
  createCrawls
  deleteCrawl
  getAllCrawls
  getCrawl
  getCrawlIncrementalSupport
  listCrawls
  startCrawl
  stopCrawl
  updateCrawls
[Managing Dimension Value Ids]
  createDimensionValueIdManager
  deleteDimensionValueIdManager
  exportDimensionValueIdMappings
  generateDimensionValueId
  getDimensionValueId
  importDimensionValueIdMappings
[Viewing Crawl Status and Results]
  getAllCrawlMetrics
  getCrawlMetrics
  getCrawlStatus
  
For detailed usage information including task options, use --help-detail
For detailed usage information for individual task options, use <task-name>
--help