Linux / UNIX: Create Username or Groups in UPPER Case

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Q. How do I create username or user groups in upper case under Linux / *BSD / UNIX operating systems?

You can create username and groups in upper case but I don’t recommend it for following problems:
(a) Confusion – Some user may get confused with username VIVEK and vivek.

(b) Compatibility issues – Many protocols and certain libraries may produced compatibility issues.

The use of upper case letters for usernames or group names should be avoided under Linux / UNIX like operating systems.

Posted by: Vivek Gite

The author is the creator of nixCraft and a seasoned sysadmin and a trainer for the Linux operating system/Unix shell scripting. He has worked with global clients and in various industries, including IT, education, defense and space research, and the nonprofit sector. Follow him on Twitter, Facebook, Google+.

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