|  |  |  |  | 
| Common FeaturesCommon Features — Features available in all test programs | 
All tests support the following command line options:
| 
 | list the available subtests and exit | 
| 
 | run the specified subtest | 
| 
 | print extra debugging information when running tests and optionally only show the messages from the specified log domain (use "application" to specify the default application domain) | 
| 
 | print a short description of the test and exit | 
| 
 | print help and exit | 
The following exit status codes are defined:
| Name | Value | Description | 
|---|---|---|
| IGT_EXIT_SUCCESS | 0 | The test was successful | 
| IGT_EXIT_SKIP | 77 | The test was skipped | 
| IGT_EXIT_TIMEOUT | 78 | The test took longer than expected and was stopped | 
| IGT_EXIT_INVALID | 79 | An invalid option or subtest was specified | 
Any other exit status indicates a test failure.