dtrace Command Exit Status Values
            
         The following exit values are returned by the dtrace utility:
               
- 0
- 
                     
                     The specified requests were completed successfully. For D program requests, the 0 exit status indicates that programs were successfully compiled, probes were successfully enabled, or anonymous state was successfully retrieved. dtracereturns 0 even if the specified tracing requests encountered errors or drops.
- 1
- 
                     
                     A fatal error occurred. For D program requests, the 1 exit status indicates that program compilation failed or that the specified request could not be satisfied. 
- 2
- 
                     
                     Invalid command-line options or arguments were specified.