Administering user accounts

Copying user accounts from SCO XENIX or non-SCO OpenServer systems

Use the addxusers(ADM) utility to copy accounts from non-SCO OpenServer systems (or SCO XENIX systems) to your system. addxusers accepts an edited /etc/passwd file as input and makes the necessary database modifications for use on your system. Refer to the addxusers(ADM) manual page for a complete procedure.

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Password compatibility across UNIX systems

The password encryption scheme used by your SCO OpenServer system maintains compatibility with other XENIX and UNIX system implementations, while providing the ability to create passwords with more than eight significant characters. However, if you are using the Improved or High security profiles, passwords of up to 80 characters are allowed, and these cannot be imported to UNIX systems from other vendors. To ensure compatibility, you can limit the number of characters considered significant when passwords are checked and encrypted.

To reconfigure the number of significant segments, use the command:

usermod -D -x "{passwdSignificantSegments value}"

where value is from 1 to 10. A value of 1 (instead of the 10 used in the Improved or High defaults) allows the encryption mechanism to ignore characters following the first eight, thus allowing complete compatibility with other systems.

WARNING: Most XENIX and UNIX systems will accept passwords longer than eight characters, but only use the first eight for encryption. This can cause unexpected results when moving an encrypted password string from one of these systems to an SCO OpenServer system. If a password longer than eight characters has been used, such as ``narcissus'', only the first eight characters (``narcissu'') should be entered on an SCO OpenServer system.

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© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003