_rc - UDM Built-in Variable

The _rc built-in variable holds the current UDM return code, a numeric value that indicates the highest return code received from processing all UDM commands up to that point.

The value of _rc is the return code that the UDM Manager returns when it exits.

As with the _halton variable, _rc can be set, via the set command, to any of the following integers or convenience values:

For example: