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Username limitations

 
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Frederick Maulion
Occasional Advisor

‎11-09-2001 04:35 PM

‎11-09-2001 04:35 PM

Username limitations

Does usernames in Linux (specifically Mandrake 8.1) have to start with letters? I tried creating them with numbers but Linux doesn't accept the usernames.
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Marco Paganini
Respected Contributor

‎11-09-2001 08:56 PM

‎11-09-2001 08:56 PM

Solution

Re: Username limitations

Hello Frederick,

I've checked the source code for useradd.c and you're right. Usernames and Groupnames cannot start with a digit (they MUST start with a letter). Also, they may not contains colons, commas, newlines or any non-printable characters.

Hope it helps,
Paga
Keeping alive, until I die.
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Frederick Maulion
Occasional Advisor

‎11-09-2001 10:08 PM

‎11-09-2001 10:08 PM

Re: Username limitations

Thanks, Paga.

Just wanted confirmation.

Frederick
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