On Wed, 26 Apr 2006, Nicolas François wrote:
The [a-z_][a-z0-9_-]*[$] regular expression is what is usually permitted.
From what I can see it should therefore be [$]? at the end: the $ is not
mandatory as it is above.
It is usually recommended to only use usernames that begin with a lower case letter or an underscore, and are only followed by lower case letters, underscores, dashes, and dollar signs. In regular expression terms: '[a-z_][a-z0-9_-]*[$]'. On Debian, the constraints on the username are loosened: Usernames must neither start by a dash ('-') nor contain a colon (':') or an end of line ('\n'). Does it look better to you?
That's better. You still need to mention the digits. -- http://rrt.sc3d.org/ | RSA, n. safety in numbers