UNIX Question and Answer – User Account Management
UNIX MCQ – Multiple Choice Questions for exam, interview, and Entrance Test
1. What command is used to display the default values for creating a new user account in UNIX?
a) userdefaults
b) defaultuser
c) useradd -D
d) newuser -defaults
Answer: c) useradd -D
Explanation: The useradd -D command is used to display the default values for creating a new user account in UNIX.
2. Which option is used with the useradd command to specify the expiration date for a new user account?
a) -e
b) -expire
c) -expiry
d) -expires
Answer: a) -e
Explanation: The -e option with the useradd command is used to specify the expiration date for a new user account.
3. What command is used to create a new group in UNIX?
a) groupadd
b) addgroup
c) newgroup
d) creategroup
Answer: a) groupadd
Explanation: The groupadd command is used to create a new group in UNIX.
4. Which option is used with the usermod command to add a user to multiple groups simultaneously?
a) -G
b) -addGroup
c) -group
d) -add
Answer: a) -G
Explanation: The -G option with the usermod command is used to add a user to multiple groups simultaneously in UNIX.
5. What command is used to remove a user from a group in UNIX?
a) removeuser
b) delgroup
c) groupdel
d) userdel -G
Answer: d) userdel -G
Explanation: The userdel -G command is used to remove a user from a group in UNIX.
6. Which option is used with the chsh command to change the user’s login shell?
a) -s
b) -shell
c) -login
d) -change
Answer: a) -s
Explanation: The -s option with the chsh command is used to change the user’s login shell in UNIX.
7. What command is used to change the primary group of a user in UNIX?
a) primarygroup
b) usergroup
c) chgrp
d) usermod -g
Answer: d) usermod -g
Explanation: The usermod -g command is used to change the primary group of a user in UNIX.
8. Which option is used with the useradd command to specify the initial login group for a new user?
a) -l
b) -login
c) -g
d) -group
Answer: c) -g
Explanation: The -g option with the useradd command is used to specify the initial login group for a new user.
9. What command is used to display the group membership of a user in UNIX?
a) showgroups
b) groups
c) usergroups
d) getent passwd
Answer: b) groups
Explanation: The groups command is used to display the group membership of a user in UNIX.
10. Which option is used with the chage command to set the maximum number of days a password is valid?
a) -M
b) -maxdays
c) -max
d) -expiry
Answer: b) -maxdays
Explanation: The -maxdays option with the chage command is used to set the maximum number of days a password is valid.
11. What command is used to display the current password aging policies for a user account in UNIX?
a) passwd -aging
b) chage
c) aging
d) getpass
Answer: b) chage
Explanation: The chage command is used to display the current password aging policies for a user account in UNIX.
12. Which option is used with the chage command to set the date of the last password change for a user?
a) -l
b) -last
c) -lastchange
d) -password
Answer: c) -lastchange
Explanation: The -lastchange option with the chage command is used to set the date of the last password change for a user.
13. What command is used to display the details of a specific group in UNIX?
a) groupinfo
b) getent group
c) id
d) cat /etc/group
Answer: b) getent group
Explanation: The getent group command is used to display the details of a specific group in UNIX.
14. Which option is used with the usermod command to set the expiration date for a user account?
a) -e
b) -expires
c) -expiry
d) -expire
Answer: a) -e
Explanation: The -e option with the usermod command is used to set the expiration date for a user account.
15. What command is used to display the group ID (GID) associated with a group name in UNIX?
a) getent group
b) id
c) groups
d) grep
Answer: a) getent group
Explanation: The getent group command is used to display the group ID (GID) associated with a group name in UNIX.
16. Which option is used with the usermod command to set the user’s login shell?
a) -login
b) -shell
c) -s
d) -change
Answer: c) -s
Explanation: The -s option with the usermod command is used to set the user’s login shell.
17. What command is used to display information about system users in UNIX?
a) showusers
b) getent passwd
c) id
d) cat /etc/passwd
Answer: b) getent passwd
Explanation: The getent passwd command is used to display information about system users in UNIX.
18. Which option is used with the chsh command to specify the new login shell for a user?
a) -s
b) -shell
c) -new
d) -change
Answer: a) -s
Explanation: The -s option with the chsh command is used to specify the new login shell for a user.
19. What command is used to assign a password to a user account in UNIX?
a) passwd
b) setpass
c) addpass
d) modpass
Answer: a) passwd
Explanation: The passwd command is used to assign a password to a user account in UNIX.
20. Which option is used with the chage command to set the minimum number of days required between password changes?
a) -m
b) -mindays
c) -min
d) -minpass
Answer: b) -mindays
Explanation: The -mindays option with the chage command is used to set the minimum number of days required between password changes.
21. What command is used to display the user ID (UID) associated with a username in UNIX?
a) getent passwd
b) id
c) whoami
d) user
Answer: a) getent passwd
Explanation: The getent passwd command is used to display information about user accounts, including the user ID (UID) associated with a username.
22. Which option is used with the usermod command to add a user to multiple groups simultaneously?
a) -G
b) -addGroup
c) -group
d) -add
Answer: a) -G
Explanation: The -G option with the usermod command is used to add a user to multiple groups simultaneously in UNIX.
23. What command is used to remove a user from a group in UNIX?
a) removeuser
b) delgroup
c) groupdel
d) userdel -G
Answer: d) userdel -G
Explanation: The userdel -G command is used to remove a user from a group in UNIX.
24. Which option is used with the chsh command to change the user’s login shell?
a) -s
b) -shell
c) -login
d) -change
Answer: a) -s
Explanation: The -s option with the chsh command is used to change the user’s login shell in UNIX.
25. What command is used to change the primary group of a user in UNIX?
a) primarygroup
b) usergroup
c) chgrp
d) usermod -g
Answer: d) usermod -g
Explanation: The usermod -g command is used to change the primary group of a user in UNIX.
26. What command is used to lock a user account in UNIX?
a) lockuser
b) userlock
c) passwd -l
d) usermod -l
Answer: c) passwd -l
Explanation: The passwd -l command is used to lock a user account in UNIX.
27. Which option is used with the passwd command to disable password aging for a user account?
a) -n
b) -noage
c) -disable
d) -agingoff
Answer: c) -disable
Explanation: The -disable option with the passwd command is used to disable password aging for a user account.
28. What command is used to display the expiration date of a user account in UNIX?
a) expdate
b) userexpire
c) chage -l
d) usermod -l
Answer: c) chage -l
Explanation: The chage -l command is used to display the expiration date of a user account in UNIX.
29. Which option is used with the chage command to set the date of the last password change for a user?
a) -last
b) -lastchange
c) -lc
d) -pwdchange
Answer: b) -lastchange
Explanation: The -lastchange option with the chage command is used to set the date of the last password change for a user.
30. What command is used to display the group ID (GID) associated with a group name in UNIX?
a) getent group
b) id
c) groups
d) grep
Answer: a) getent group
Explanation: The getent group command is used to display the group ID (GID) associated with a group name in UNIX.
31. Which option is used with the usermod command to change the user’s primary group?
a) -p
b) -primarygroup
c) -pg
d) -g
Answer: d) -g
Explanation: The -g option with the usermod command is used to change the user’s primary group in UNIX.
32. What command is used to display the password aging information for a user account in UNIX?
a) passwd -aging
b) chage
c) aginginfo
d) pwdaging
Answer: b) chage
Explanation: The chage command is used to display the password aging information for a user account in UNIX.
33. Which option is used with the chage command to set the maximum number of days before a password must be changed?
a) -max
b) -maxdays
c) -d
d) -days
Answer: b) -maxdays
Explanation: The -maxdays option with the chage command is used to set the maximum number of days before a password must be changed.
34. What command is used to assign a password to a user account in UNIX?
a) passwd
b) setpass
c) addpass
d) modpass
Answer: a) passwd
Explanation: The passwd command is used to assign a password to a user account in UNIX.
35. Which option is used with the chage command to set the minimum number of days before a password can be changed?
a) -m
b) -mindays
c) -d
d) -min
Answer: b) -mindays
Explanation: The -mindays option with the chage command is used to set the minimum number of days before a password can be changed.
36. What command is used to set the expiration date for a user account in UNIX?
a) expire
b) userexpire
c) passwd -e
d) usermod -e
Answer: d) usermod -e
Explanation: The usermod -e command is used to set the expiration date for a user account in UNIX.
37. Which option is used with the usermod command to specify the expiration date for a user account?
a) -e
b) -expire
c) -d
d) -date
Answer: a) -e
Explanation: The -e option with the usermod command is used to specify the expiration date for a user account.
38. What command is used to display the details of a specific group in UNIX?
a) groupinfo
b) getent group
c) id
d) cat /etc/group
Answer: b) getent group
Explanation: The getent group command is used to display the details of a specific group in UNIX.
39. Which option is used with the usermod command to set the expiration date for a user account?
a) -e
b) -expires
c) -expiry
d) -expire
Answer: a) -e
Explanation: The -e option with the usermod command is used to set the expiration date for a user account.
40. What command is used to display the group ID (GID) associated with a group name in UNIX?
a) getent group
b) id
c) groups
d) grep
Answer: a) getent group
Explanation: The getent group command is used to display the group ID (GID) associated with a group name in UNIX.
41. Which option is used with the usermod command to set the user’s login shell?
a) -login
b) -shell
c) -s
d) -change
Answer: c) -s
Explanation: The -s option with the usermod command is used to set the user’s login shell in UNIX.
42. What command is used to display information about system users in UNIX?
a) showusers
b) getent passwd
c) id
d) cat /etc/passwd
Answer: b) getent passwd
Explanation: The getent passwd command is used to display information about system users in UNIX.
43. Which option is used with the chsh command to specify the new login shell for a user?
a) -s
b) -shell
c) -new
d) -change
Answer: a) -s
Explanation: The -s option with the chsh command is used to specify the new login shell for a user.
44. What command is used to assign a password to a user account in UNIX?
a) passwd
b) setpass
c) addpass
d) modpass
Answer: a) passwd
Explanation: The passwd command is used to assign a password to a user account in UNIX.
45. Which option is used with the chage command to set the minimum number of days required between password changes?
a) -m
b) -mindays
c) -min
d) -minpass
Answer: b) -mindays
Explanation: The -mindays option with the chage command is used to set the minimum number of days required between password changes.
46. What command is used to display the user ID (UID) associated with a username in UNIX?
a) getent passwd
b) id
c) whoami
d) user
Answer: a) getent passwd
Explanation: The getent passwd command is used to display information about user accounts, including the user ID (UID) associated with a username.
47. Which option is used with the usermod command to add a user to multiple groups simultaneously?
a) -G
b) -addGroup
c) -group
d) -add
Answer: a) -G
Explanation: The -G option with the usermod command is used to add a user to multiple groups simultaneously in UNIX.
48. What command is used to remove a user from a group in UNIX?
a) removeuser
b) delgroup
c) groupdel
d) userdel -G
Answer: d) userdel -G
Explanation: The userdel -G command is used to remove a user from a group in UNIX.
49. Which option is used with the chsh command to change the user’s login shell?
a) -s
b) -shell
c) -login
d) -change
Answer: a) -s
Explanation: The -s option with the chsh command is used to change the user’s login shell in UNIX.
50. What command is used to change the primary group of a user in UNIX?
a) primarygroup
b) usergroup
c) chgrp
d) usermod -g
Answer: d) usermod -g
Explanation: The usermod -g command is used to change the primary group of a user in UNIX.
