Josh Kelley wrote: > On 1/5/06, Johnny Hughes <mailing-lists at hughesjr.com> wrote: >> BUT, the I think that the real reason that dots should not be allowed in >> user names is because this doesn't allow dots: >> >> RFC 4282 - The Network Access Identifier >> >> There is no requirement to follow this for usernames; however, I think >> we should. > > Unless I'm misreading the RFC, it does allow dots in usernames? > > nai = username > nai =/ "@" realm > nai =/ username "@" realm > > username = dot-string > dot-string = string > dot-string =/ dot-string "." string I don't know myself but Fedora Core 4 allows dots in usernames. useradd asdf.adsf under Fedora Core 4 works just fine as well as userdel asdf.asdf . I wonder which direction RHEL will follow in the future since Fedora is usually the test ground for newer stuff in RHEL.