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useradd command

We have linux machine as a mail server.. and we are using windows XP as a client machine..(Outlook express)
i want to create a new user..with hyphen like "abc_d"
so that we can use this id as                     abc_d@domain.com

please advise me what is command to create the id..

i am using some other id like with out any hyphens.. it is ok.. but i want to create user with having hyphens..

this is command what iam using with out hyphens.. user id  "abc"

# useradd -c "staff" -u 123 -g 500 -m abc -d /home/abc -s /bin/bash

but i want to create the user with "abc_d"



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3 Solutions
 
bryanlloydharrisCommented:
What about the adduser command?  Just type adduser by itself and see if you have it.  If you have it, just answer the questions and it will add your user.
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ravenplCommented:
I'm sorry - I don;t understand Your problem.
Just use the username "abc_d". Hint: don't use -u option.
bryanlloydharris: what brand of Linux You use - mine useradd is not asking for anything?
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windbringerCommented:
The question is a little bit intriguing for me.
First for me hyphen is something like this - not like this _ so the user would be abc-d not abc_d.
Second it would help  if you tell the problem with useradd command. Meanining what command did  you give and what error did you get.
Anyway it is good to check if that user id you want to create exists (the user-id is from the -u option and you can check it looking at the /etc/passwd and /etc/shadow files).  And if the username is not accepted you can try using single quote around the username which prevents that the username to be interpreted as an option.
ravenpl: I use Slackware and there adduser it is a script which asks you different options you want for the user.
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