Hi, I'm confused, Created a user using useradd -c user_full_name -d /dev/null -g GroupA -s /sbin/nologin bob_t I see in the /etc/passwd file bob_t:x:100:1000:user_name:/dev/null:/sbin/nologin Where in /etc/group GroupA:x:1000 The question is, how come bob_t is not included into GroupA in the /etc/group file? Is the /etc/group file only for supplemental groups which the user bob_t is also associated with? (and GroupA is the user's primary group and thus no need to be included?) using the command line parameter usermod -g somegroup username --