| access | Access a target environment on the Jurassic Systems grid. |
| system | Check a system's current status. |
| ls | List files in the current directory. |
| display | Display image files (hint: use ls to find a 'file'). |
| music | Turn background music on or off. |
| keychecks | Display system level command history. |
| man | Display reference manual for a given command. |
| help | List all available commands. |