I know that /etc/passwd contains the group names and that 500+ group ids are user group ids. But they can be modified to any number... So how can I be sure that they are actually user group ids only.
I changed the group id of a user group to a number less than 500(81 precisely) and found that the Users and Groups interface under System Tools did not display the user group. Why????
I need only the user group names to store some data corresponding to each group in a file that is similar to /etc/passwd. I am trying to develop an interface that will recognise all the user groups existing on the system and read certain data associated with each user group.
Why is this so suspicious ????