SEO

#1 (**permalink**) 02-16-2008, 05:29 AM

What is the maximum length for usernames?
And what are valid characters for usernames

Thanks,
--
Zoong PHAM UNIX Systems Administrator
Mercy Health and Aged Care Inc. Melbourne - Australia
zpham@mercy_dot_com_dot_au +61 - 3 - 84167747
PGP public key is available on request

#2 (**permalink**) 02-16-2008, 05:29 AM

On 7 Apr 2004, Zoong Pham wrote:

> What is the maximum length for usernames?
> And what are valid characters for usernames

man 5 passwd:
The login name may be up to 31 characters long. For compatibility
with
legacy software, a login name should start with a letter and consist
solely of letters, numbers, dashes and underscores. The login name
must
never begin with a hyphen (`-'); also, it is strongly suggested that
nei-
ther uppercase characters nor dots (`.') be part of the name, as this
tends to confuse mailers.

--

#3 (**permalink**) 02-16-2008, 05:29 AM

In article <Pine.GSO.4.44.0404062318001.18195-100000@elaine29.Stanford.EDU>, Ted Unangst wrote:
> On 7 Apr 2004, Zoong Pham wrote:
>
>> What is the maximum length for usernames?
>> And what are valid characters for usernames
>
> man 5 passwd:

Thanks Ted!

--
Zoong PHAM UNIX Systems Administrator
Mercy Health and Aged Care Inc. Melbourne - Australia
zpham@mercy_dot_com_dot_au +61 - 3 - 84167747
PGP public key is available on request

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

SEO

username: maximum length and valid characters