User Account Management

Question 1

What is the command to create a local user account?

Answer 1

useradd

Question 2

What is the command to create a local group?

Answer 2

groupadd

Question 3

What is the command to delete a user and it’s home directory?

Answer 3

userdel -r

Question 4

What is the command to delete a group?

Answer 4

groupdel

Question 5

What is the command to add a user to a supplementary group?

Answer 5

usermod -aG

Question 6

What file contains a list of a systems user accounts?

Answer 6

/etc/passwd

Question 7

What is the file that contains the list of groups of which users belong?

Answer 7

/etc/group

Question 8

What file contains the hashed passphrase for user accounts and additional properties related to user account passwords?

Answer 8

/etc/shadow

Question 9

In what file can you change password requirements for new users?

Answer 9

/etc/login.defs

Question 10

What command can you use to change password requirements for a user?

Answer 10

chage {-m min days} {-M max days} {-d last day} {-I inactive} {-E expire date} {-W warn days} user

Question 11

What options can you change for password requirements inside the /etc/login.defs in regards to newly created accounts?

Answer 11

PASS_MAX_DAYS 99999
PASS_MIN_DAYS 0
PASS_MIN_LEN 5
PASS_WARN_AGE 7
UID_MIN 1000 (can be changed to 10000 or 20000 to not be guessed so easily (security)