[CentOS] Why are dots in username & groupname no longer allowed?
Adam Gibson
agibson at ptm.com
Fri Jan 6 17:31:47 UTC 2006
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.
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