Unix MCQs and Answers with Explanation:The top MCQs on Unix provided in this article will be of huge help to candidates preparing for interviews, placements or certification exams. In this article, we have provided the Top 62 Unix Multiple Choice Questions that cover various aspects of the Unix concept. You can also gather a brief overview of Unix and take a Unix online quiz through this article. Unix is a powerful and popular operating system that was first developed in the late 1960s by Ken Thompson, Dennis Ritchie, and their team at Bell Labs. Since then, Unix has become a dominant force in the world of computing, with many of its features and concepts being adopted by other operating systems.
Unix MCQ Questions & Answers
Unix is known for its robustness, security, and flexibility, and it has been used for a wide range of applications, from servers to personal computers. Now without any further delay scroll down to the next sections and gather the Unix MCQ Questions with Answers/ Unix Quiz to test your knowledge of this versatile operating system.
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Unix Multiple Choice Questions
| Name | Unix |
| Exam Type | MCQ (Multiple Choice Questions) |
| Category | Technical Quiz |
| Mode of Quiz | Online |
Top 62 Unix Unix MCQ Questions with Answers | Unix Quiz
1. What is the command to print the current working directory?
A) cd
B) pwd
C) ls
D) mkdir
Answer: B) pwd
Explanation: pwd command is used to print the current working directory.
2. What is the command to list all files in a directory?
A) ls
B) cd
C) cp
D) mv
Answer: A) ls
Explanation: ls command is used to list all files in a directory.
3. What is the command to change the permissions of a file?
A) chmod
B) chown
C) cp
D) mv
Answer: A) chmod
Explanation: chmod command is used to change the permissions of a file.
4. What is the command to create a new directory?
A) mkdir
B) touch
C) rm
D) cat
Answer: A) mkdir
Explanation: mkdir command is used to create a new directory.
5. What is the command to delete a file?
A) rm
B) cp
C) mv
D) cat
Answer: A) rm
Explanation: rm command is used to delete a file.
6. What is the command to copy a file?
A) cp
B) rm
C) mv
D) cat
Answer: A) cp
Explanation: cp command is used to copy a file.
7. What is the command to move a file?
A) mv
B) cp
C) rm
D) cat
Answer: A) mv
Explanation: mv command is used to move a file.
8. What is the command to display the contents of a file?
A) cat
B) cp
C) rm
D) mv
Answer: A) cat
Explanation: cat command is used to display the contents of a file.
9. What is the command to change the ownership of a file?
A) chown
B) chmod
C) cp
D) mv
Answer: A) chown
Explanation: chown command is used to change the ownership of a file.
10. What is the command to search for a file or directory?
A) find
B) grep
C) sed
D) awk
Answer: A) find
Explanation: find command is used to search for a file or directory.
11. What is the command to create a symbolic link?
A) ln -s
B) ln -h
C) ln -p
D) ln -f
Answer: A) ln -s
Explanation: ln -s command is used to create a symbolic link.
12. What is the command to change the group ownership of a file?
A) chgrp
B) chmod
C) chown
D) mv
Answer: A) chgrp
Explanation: chgrp command is used to change the group ownership of a file.
13. What is the command to compress a file or directory?
A) tar
B) zip
C) gzip
D) bzip2
Answer: C) gzip
Explanation: gzip command is used to compress a file or directory.
14. What is the command to extract files from a tar archive?
A) tar -xvf
B) tar -cvf
C) tar -tvf
D) tar -zcvf
Answer: A) tar -xvf
Explanation: tar -xvf command is used to extract files from a tar archive.
15. What is the command to display the disk usage of files and directories?
A) du
B) df
C) fdisk
D) mkfs
Answer: A) du
Explanation: du command is used to display the disk usage of files and directories.
16. What is the command to format a file system?
A) mkfs
B) fdisk
C) dd
D) tar
Answer: A) mkfs
Explanation: mkfs command is used to format a file system.
17. What is the command to mount a file system?
A) mount
B) unmount
C) fsck
D) mkfs
Answer: A) mount
Explanation: mount command is used to mount a file system.
18. What is the command to unmount a file system?
A) umount
B) mount
C) fsck
D) mkfs
Answer: A) umount
Explanation: umount command is used to unmount a file system.
19. What is the command to check and repair a file system?
A) fsck
B) mount
C) umount
D) mkfs
Answer: A) fsck
Explanation: fsck command is used to check and repair a file system.
20. What is the command to list all processes running on a system?
A) ps
B) top
C) kill
D) nice
Answer: A) ps
Explanation: ps command is used to list all processes running on a system.
21. What is the command to display the current system load?
A) top
B) ps
C) kill
D) nice
Answer: A) top
Explanation: top command is used to display the current system load.
22. What is the command to send a signal to a process?
A) kill
B) ps
C) top
D) nice
Answer: A) kill
Explanation: kill command is used to send a signal to a process.
23. What is the command to set the priority of a process?
A) nice
B) ps
C) top
D) kill
Answer: A) nice
Explanation: nice command is used to set the priority of a process.
24. What is the command to suspend a process?
A) Ctrl + Z
B) Ctrl + C
C) Ctrl + X
D) Ctrl + V
Answer: A) Ctrl + Z
Explanation: Ctrl + Z is used to suspend a process.
25. What is the command to resume a suspended process?
A) fg
B) bg
C) ps
D) kill
Answer: A) fg
Explanation: fg command is used to resume a suspended process.
26. What is the command to run a process in the background?
A) &
B) Ctrl + Z
C) Ctrl + C
D) Ctrl + X
Answer: A) &
Explanation: & is used to run a process in the background.
27. What is the command to display the manual page for a command?
A) man
B) help
C) info
D) whatis
Answer: A) man
Explanation: man command is used to display the manual page for a command.
28. What is the command to display the type of a command?
A) type
B) which
C) whereis
D) locate
Answer: A) type
Explanation: type command is used to display the type of a command.
29. What is the command to search for a file in a directory?
A) find
B) locate
C) grep
D) whereis
Answer: A) find
Explanation: find command is used to search for a file in a directory.
30. What is the command to display the last lines of a file?
A) tail
B) head
C) cat
D) less
Answer: A) tail
Explanation: tail command is used to display the last lines of a file.
31. What is the command to display the first lines of a file?
A) head
B) tail
C) cat
D) less
Answer: A) head
Explanation: head command is used to display the first lines of a file.
32. What is the command to copy files and directories?
A) cp
B) mv
C) rm
D) mkdir
Answer: A) cp
Explanation: cp command is used to copy files and directories.
33. What is the command to move files and directories?
A) mv
B) cp
C) rm
D) mkdir
Answer: A) mv
Explanation: mv command is used to move files and directories.
34. What is the command to remove files and directories?
A) rm
B) cp
C) mv
D) mkdir
Answer: A) rm
Explanation: rm command is used to remove files and directories.
35. What is the command to remove a directory?
A) rmdir
B) mkdir
C) rm
D) mv
Answer: A) rmdir
Explanation: rmdir command is used to remove a directory.
36. What is the command to change the ownership of a file or directory?
A) chown
B) chmod
C) chgrp
D) chroot
Answer: A) chown
Explanation: chown command is used to change the ownership of a file or directory.
37. What is the command to change the permissions of a file or directory?
A) chmod
B) chown
C) chgrp
D) chroot
Answer: A) chmod
Explanation: chmod command is used to change the permissions of a file or directory.
38. What is the command to change the group ownership of a file or directory?
A) chgrp
B) chmod
C) chown
D) chroot
Answer: A) chgrp
Explanation: chgrp command is used to change the group ownership of a file or directory.
39. What is the command to change the root directory?
A) chroot
B) chmod
C) chown
D) chgrp
Answer: A) chroot
Explanation: chroot command is used to change the root directory.
40. What is the command to display the environment variables?
A) env
B) set
C) export
D) unset
Answer: A) env
Explanation: env command is used to display the environment variables.
41. What is the command to set an environment variable?
A) export
B) env
C) set
D) unset
Answer: A) export
Explanation: export command is used to set an environment variable.
42. What is the command to unset an environment variable?
A) unset
B) env
C) set
D) export
Answer: A) unset
Explanation: unset command is used to unset an environment variable.
43. What is the command to check the disk usage of a file or directory?
A) du
B) df
C) ls
D) cat
Answer: A) du
Explanation: du command is used to check the disk usage of a file or directory.
44. What is the command to check the disk space available on a system?
A) df
B) du
C) ls
D) cat
Answer: A) df
Explanation: df command is used to check the disk space available on a system.
45. What is the command to compress files?
A) tar
B) gzip
C) zip
D) bzip2
Answer: B) gzip
Explanation: gzip command is used to compress files.
46. What is the command to create a compressed archive of files?
A) tar
B) gzip
C) zip
D) bzip2
Answer: A) tar
Explanation: tar command is used to create a compressed archive of files.
47. What is the command to extract files from a compressed archive?
A) tar
B) gzip
C) unzip
D) bzip2
Answer: A) tar
Explanation: tar command is used to extract files from a compressed archive.
48. What is the command to create a new user account?
A) useradd
B) usermod
C) userdel
D) userlist
Answer: A) useradd
Explanation: useradd command is used to create a new user account.
49. What is the command to modify an existing user account?
A) usermod
B) useradd
C) userdel
D) userlist
Answer: A) usermod
Explanation: usermod command is used to modify an existing user account.
50. What is the command to delete a user account?
A) userdel
B) useradd
C) usermod
D) userlist
Answer: A) userdel
Explanation: userdel command is used to delete a user account.
51. What is the command to list all the user accounts on a system?
A) cat /etc/passwd
B) userlist
C) users
D) who
Answer: A) cat /etc/passwd
Explanation: cat /etc/passwd command is used to list all the user accounts on a system.
52. What is the command to list all the groups on a system?
A) cat /etc/group
B) groupadd
C) groupmod
D) groupdel
Answer: A) cat /etc/group
Explanation: cat /etc/group command is used to list all the groups on a system.
53. What is the command to add a new group?
A) groupadd
B) groupmod
C) groupdel
D) grouplist
Answer: A) groupadd
Explanation: groupadd command is used to add a new group.
54. What is the command to modify an existing group?
A) groupmod
B) groupadd
C) groupdel
D) grouplist
Answer: A) groupmod
Explanation: groupmod command is used to modify an existing group.
55. What is the command to delete a group?
A) groupdel
B) groupadd
C) groupmod
D) grouplist
Answer: A) groupdel
Explanation: groupdel command is used to delete a group.
56. What is the command to change the password for a user account?
A) passwd
B) userpasswd
C) pswd
D) user
Answer: A) passwd
Explanation: passwd command is used to change the password for a user account.
57. What is the command to switch to another user account?
A) su
B) switch
C) user
D) login
Answer: A) su
Explanation: su command is used to switch to another user account.
58. What is the command to check the status of a running process?
A) ps
B) status
C) run
D) process
Answer: A) ps
Explanation: ps command is used to check the status of a running process.
59. What is the command to terminate a running process?
A) kill
B) stop
C) end
D) terminate
Answer: A) kill
Explanation: kill command is used to terminate a running process.
60. What is the command to view the contents of a file?
A) cat
B) ls
C) vi
D) cp
Answer: A) cat
Explanation: cat command is used to view the contents of a file.
61. What is the command to remove a file?
A) rm
B) cp
C) mv
D) ln
Answer: A) rm
Explanation: rm command is used to remove a file.
62. What is the command to list the contents of a directory?
A) ls
B) cd
C) pwd
D) dir
Answer: A) ls
Explanation: ls command is used to list the contents of a directory.
Unix is a powerful and versatile operating system that has played a significant role in the development of modern computing. By testing your knowledge with these Unix MCQ Questions with Answers, you can deepen your understanding of this system and become a more skilled Unix administrator or developer. Keep following our Freshersnow portal to get regular updates on various technical quizzes and stay updated.