How to check for pg_dump errors?

[Chris Hoover <revoohc@xxxxxxxxx>]

Silly question, but in a shell script, what is the best way to check
for a pg_dump problem?  I'm working on reworking our backup
methodology, and want to make sure that if pg_dump can't dump a db, we
page the on call db.  Does it return any sort of exit code
indicating it was not successful dumping a database?

Thanks,

Chris