
Chapter 4 Setting Up User Accounts 69
Now let’s say that Tony and Tom have the same short name, but different passwords.
If Tom attempts to log in to Tony’s computer using the short name “tsmith” and his
password (smitty), Mac OS X finds “tsmith”, in both domains and gives him the option to
choose the user he wishes to authenticate to. His only option is to authenticate to his
own user record in the root domain, with his own password.
If Tony has a user record in his local directory domain that has the same names and
password as his record in the Students domain, he would still get the option to choose
the user ID he wishes to log in to. Tony’s local domain should offer a name/password
combination that distinguishes it from the Students domain’s record. If the Students
domain is not accessible (when Tony works at home, for example), he can log in to the
Students domain only if the account is set up as a mobile account. In that case, he can
use the files on his computer which were created under the mobile user. Tony will still
get the login window option to choose the user he wishes to authenticate to if his user
ID in both the local domain and Students domain is the same.
Duplicate short names can have undesirable effects in group records, described in the
next section.
/
Students Faculty
ony’s computer
Tony Smith
(tsmith, tony)
Tom Smith
(tsmith,smitty)
Tom’s computer
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