groups and group management in Linux CLI - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to list all groups on the system.

Linux CLI

cat /etc/[1]

Drag options to blanks, or click blank then click option'

Ashadow

Bgroup

Cpasswd

Dhosts

Attempts:

3 left

💡 Hint

Common Mistakes

Using /etc/passwd instead of /etc/group

Using /etc/shadow which stores passwords

Using /etc/hosts which stores network info

The file /etc/group contains all the groups on a Linux system.

2fill in blank

medium

Complete the command to add a new group named 'developers'.

Linux CLI

sudo [1] developers

Drag options to blanks, or click blank then click option'

Auseradd

Busermod

Caddgroup

Dgroupadd

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'useradd' which adds users, not groups

Using 'usermod' which modifies users

Using 'addgroup' which is not standard on all systems

The 'groupadd' command creates a new group on the system.

3fill in blank

hard

Fix the command to add user 'alice' to the group 'staff'.

Linux CLI

sudo usermod -aG [1] alice

Drag options to blanks, or click blank then click option'

Astaff

Busers

Cadmin

Dsudo

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong group name

Forgetting the '-a' option which appends the group

Using 'usermod' without '-G' option

The '-aG' option adds the user to the specified group without removing from others. 'staff' is the target group.

4fill in blank

hard

Fill both blanks to create a new user 'bob' with primary group 'developers'.

Linux CLI

sudo useradd -g [1] [2]

Drag options to blanks, or click blank then click option'

Adevelopers

Bbob

Cstaff

Dalice

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up username and group

Using wrong group name

Forgetting to specify username

The '-g' option sets the primary group. The username is 'bob'.

5fill in blank

hard

Fill both blanks to extract the primary group of user 'charlie'.

Linux CLI

groups [1] | cut -d ' ' -f [2]

Drag options to blanks, or click blank then click option'

Acharlie

C3

D:

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong delimiter

Using wrong field number

Forgetting username

The 'groups' command shows groups for 'charlie'. The output is cut using space as delimiter, field 3 shows the primary group name.