max charachters for usernames Post: 14522

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Top Forums UNIX for Dummies Questions & Answers max charachters for usernames Post 14522 by thehoghunter on Friday 1st of February 2002 10:50:13 AM

02-01-2002

thehoghunter

Guest

Some info -
From docs.sun.com:
http://docs.sun.com/ab2/coll.47.4/SY...Enc=iso-8859-1

User (Login) Names
User names, also called login names, let users access their own systems and remote systems that have the appropriate access privileges. You must choose a user name for each user account you create. User names must:

Be unique within your organization, which may span multiple domains

Contain from two to eight letters and numerals (the first character must be a letter and at least one character must be a lowercase letter)

Not contain an underscore or space

---------------------------
You can have a username longer than what is documented. I tested on a Solaris 2.6 system and found that the following worked with no problems

userids12red

I also tried userids12 as a login since the documentation says it's a max of 8 characters, but I could not log in (believing that the system should see the first 8 characters and let me in anyway)

thehoghunter

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LEARN ABOUT DEBIAN

lppasswd

lppasswd(1)							    Apple Inc.							       lppasswd(1)

NAME

       lppasswd - add, change, or delete digest passwords.

SYNOPSIS

       lppasswd [ username ]
       lppasswd -a [ -g groupname ] username
       lppasswd -x username

DESCRIPTION

       lppasswd  adds, changes, or deletes passwords in the CUPS digest password file, passwd.md5. When run by a normal user, lppasswd will prompt
       for the old and new passwords.  When run by the super-user, lppasswd can add new accounts (-a username), change	existing  accounts  (user-
       name), or delete accounts (-x username) in the digest password file. Digest usernames do not have to match local UNIX usernames.

OPTIONS

       lppasswd supports the following options:

       -g groupname
	    Specifies a group other than the default system group.

SECURITY ISSUES

       By  default,  the lppasswd program is not installed to allow ordinary users to change their passwords. To enable this, the lppasswd command
       must be made setuid to root with the command:
       chmod u+s lppasswd

       While every attempt has been made to make lppasswd secure against exploits that could grant super-user privileges  to  unprivileged  users,
       paranoid system administrators may wish to use Basic authentication with accounts managed by PAM instead.

SEE ALSO

       lp(1), lpr(1),
       http://localhost:631/help

COPYRIGHT

       Copyright 2007-2011 by Apple Inc.

22 February 2008						       CUPS							       lppasswd(1)