On 12/03/2010 02:04 AM, Genes MailLists wrote: > On 12/02/2010 07:42 PM, Marko Vojinovic wrote: >> On Thursday 02 December 2010 21:02:17 Aaron Konstam wrote: >>> On Thu, 2010-12-02 at 18:10 +0100, Joachim Backes wrote: >>>> Can somebody explain why pure numbers are allowed for username in the >>>> useradd command? >>>> >>>> sudo useradd 123456789 >>>> >>>> is not rejected! >>>> >>>> As is known, this leads to big problems if referring to such a user and >>>> the username differs from the userid: should such a username be >>>> interpreted as username or userid? >> > > Can you be specific - what big problems are these ? Never tried, but > it is by means obvious that this would be problematic. See chown: allows username and userid as new owner. So if a numerical userid is the same as a username (having another userid), which user is meant? The user with this username, or the user with this userid? > >> So I guess 12345 should be a valid username as any other, and useradd >> correctly allows for creation of such usernames. No bug there. >> > > Agreed - without knowing what the problems are it is hard to say that > useradd (or anything else) should disallow numerical id's .. -- Joachim Backes <joachim.backes@xxxxxxxxxxxxxx> http://www.rhrk.uni-kl.de/~backes
Attachment:
smime.p7s
Description: S/MIME Cryptographic Signature
-- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines
