PostgreSQL 12 High Availability Cookbook - Third Edition

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Though the documentation explains all of the actions available for check_postgres, it may be inconvenient to refer to it regularly. The check_postgres.pl script accepts the usual --help parameter, but it also has a more notable ability. If we specify the --man parameter instead, check_postgres will actually display the entire manual. This is similar to investigating the check_postgres man page like this:

man check_postgres

Sometimes, man pages don't get installed properly or are not available for one reason or another. The --man parameter should always work on any system that also contains the perl documentation package.