On 17 February 2016 at 05:40, Kang Kai <Kai.Kang@windriver.com> wrote:

I prefer to keep such check. There is more than one case that causes operation error such as pass wrong parameters. The messages are helpful for developers.

In that case the groupadd will return an error code. What situations with proper locking will result in groupadd running successfully but the group not being added?