nzload command status reporting

The nzload command returns status codes when it finishing running.

The status codes are as follows:
0
The load was successful. All input records were inserted.
1
The load failed. No records were inserted, because of an error or errors during the load.
2
The load was successful. The system found errors in input that did not exceed the error threshold (as specified by the -maxErrors option), so good records were inserted.

The nzload command writes high-level errors to the terminal (stderr), nzlog file, and nzbad file. You can specify the nzlog and nzbad file names on the command line or by using a control file.

To free up disk space, periodically delete log files.