True or False: If the onlyif attribute is set, then the exec will only run if the command associated to the onlyif attribute has an exit code of 0.

The statement is true. In Puppet, the onlyif attribute is used with the exec resource to specify a command that will be executed only if it exits successfully, indicated by an exit code of 0. If the command associated with the onlyif condition returns a non-zero exit code, the exec resource will not run. This ensures that the execution of the associated command occurs conditionally based on the success of the check provided by the onlyif command.

This behavior allows for better control over resource execution by preventing unnecessary actions when a specific condition is not met, thereby enhancing idempotency and preventing potential errors or conflicts during resource application.