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User Profile and Password Tricks Print E-mail
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Written by Chamara Withanachchi   

1. You can't create a system i user profile name that starts with a number but you can sign on with a user profile name that begins with a number.
In several systems besides i5/OS, administrators can set up user profiles that begin with a number rather than a letter. However, i5/OS has a prohibition against starting a user profile name with a number, but there is a workaround. If you want to synchronize your i5 user profiles with other system IDs that start with a number, you can configure i5 users to also sign on with a user profile name that begins with a number.
It's easy to configure a user profile for numeric sign-on. The process starts by creating a user profile that has the following format:
Qnxxxxxxxx
Where Q equals the letter 'Q', n equals any number between 0 and 9, and xxxxxxxx equals any eight character or less string consisting of letters, numbers, or the special characters @, #, $, or _. Using this naming convention, any of the following user profiles would be valid i5/OS user IDs.

Q1TEST#
Q12345
Q1_2_3_4_5

Either by quirk or design in i5/OS, user profile names configured according to the Qnxxxxxxxx format allow users to sign on to an i5/OS system by using two different user profile names. The actual Qnxxxxxxxx profile name that was created for the user.


The second 2 through 9 characters of the user profile name, the nxxxxxxxx part of the name. For our sample user profiles, this means that a user could sign on to an i5 system by using any of the following user profile names.

Q1TEST# or 1TEST#
Q12345 or 12345
Q1_2_3_4_5 or 1_2_3_4_5

When the user signs on, his job name will always be created and running under the Qnxxxxxxxx name but i5/OS will also accept an alternate user sign-on under the shortened nxxxxxxxx user name. This quirk allows you to fool the user into thinking that they are signing on with a user profile that starts with a number, even though the system is using a user profile that starts with the letter 'Q'. This is a handy trick when you want your users to sign on to different systems with a consistent user profile name that starts with a number.


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