because a period (or colon) can be used to separate arguments to commands like chown. for example,
> chown user1.group1 somefile
makes user1 the owner and group1 the group of somefile. if periods were allowed in usernames, all hell could break loose. the same goes for #'s, and :'s. i know that i've missed some- what are the others?


jurvis

ps i don't believe this can be changed, but then again... tell a linux user he can't and he'll find a way to make you eat your words- good luck!

On Thursday, Aug 28, 2003, at 17:06 America/New_York, Felix wrote:

Does any one know why I canīt use dot in user names
Can I change it.
It happend when I try to add a user
adduser username.lastname.
 
thanks
felix


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