[CentOS] Why are dots in username & groupname no longer allowed?
Remco Barendse
redhat at barendse.toFri Dec 30 13:58:25 UTC 2005
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> As far as I know, dots where never supposed to be valid characters for > Unix usernames. The historical reasons are many, including the syntax > of some commands that take username as a parameter. Several commands will > that username.group as a parameter and, as you can see, the dot can > get in the way of that. > > So, if you ask me, the upstream provider just corrected a long standing > compatibility issue. I think it's really a bug : https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=159034 but not something the upstream provider cares to fix it seems > In any case, if you really want to have usernames with dots on it, > you can create them manualy, or create them without the dot, and then > change them by editing the apropriate files. That's what I did now but I'm not very comfortable in editing /etc/shadow by hand Thanks for the feedback!
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