#### 3.20.12.7 Dbm Exit Codes ¶

The table below summarizes exit codes used by `mailutils dbm`:

Code | Symbolic name | Meaning
--- | --- | ---
0 | EX_OK | Successful termination
64 | EX_USAGE | Command line usage error
65 | EX_DATAERR | Error in user-supplied data: the input file is badly formatted, or some of the data supplied in the command line are invalid (e.g. user name, uid or the like), etc.
66 | EX_NOINPUT | Cannot open input file
67 | EX_NOUSER | No such user or UID when trying to set output file ownership
69 | EX_UNAVAILABLE | Operation cannot be performed due to some kind of problem (e.g. access to the file denied, etc.)
70 | EX_SOFTWARE | Internal software error
74 | EX_IOERR | Input/output error