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Description of problem:
groupadd rejects upper case characters in the group name.
# groupadd FOOBAR
groupadd: FOOBAR is a not a valid group name
IEEE Std 1003.1-2001 specifies that user and group names are composed of characters from the portable filename character set. The portable filename character set is defined as [a-z][A-Z][0-9][._-]. Therefore the group name is valid according to POSIX and I'm very surprised to find that groupadd doesn't accept this group name.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. groupadd FOOBAR
Actual Results: groupadd: FOOBAR is a not a valid group name
Expected Results: The group should be created.
It's fixed in shadow-utils-4.0.3-26.RHEL3 in next update.