Workbook 3 User and Groups : Chapter 2 Linux Groups and the /etc/group file

Question 1

What is the name of the file in which group ID (GID)’s are found?

Answer 1

/etc/group [12]

Question 2

Which fields in /etc/group identify a group’s
(i) name
and
(ii) members?

Answer 2

(ii) field 1

(ii) field 4 [12/13]

Question 3

What is a user’s primary group and where can you find that piece of data?

Answer 3

It is the default group of his own group [13]

/etc/group

Question 4

What is a user’s secondary group(s) and where can you find that piece of data?

Answer 4

A user belonging to another group

/etc/group [13]

Question 5

What commands are used to change group memberships?

Answer 5

Only root user can change the group

usermod