ChemAxon offers a comprehensive API for programmers accessing all classes and functionalities of the JChem toolkit. Database developers often use SQL statements via the JChem Cartridge for the same purpose and chemists can enjoy the graphical applications like Instant JChem. It is less known, however, that ChemAxon provides a rich set of command line utilities that are sometimes more simple and powerful than the above mentioned interfaces. Some command line utilities will be demonstrated presenting how you can convert molecules, how to store calculated properties and complex descriptors in SDFile fields, and how to search quickly in files or databases.