With execbeat version 3.1.1 on GNU/Linux exit code zero is being returned if the configured command cannot be found.
The log file contains an appropriate error message but in the produced document the exitCode suggests success:
"exec": {
"command": "FILE",
"exitCode": 0,
"stdout": ""
},
Please consider producing code 127 in this case because this will help to recognise the problem's cause. Thank you.