I tried changing umask settings for some files as:
umask 0012
for file c:
-rw-rw-r-- 1 unipro unipro 0 2010-10-15 11:30 c
umask 0013
for file d:
-rw-rw-r-- 1 unipro unipro 0 2010-10-15 11:32 d
How is it that both have the same permissions, even after using different umask permissions?