181. Which command is used to set the three permissions for all the three categories of users of a file ?
A. chgrp
B. chown
C. chmod
D. chusr
✅ The correct answer is option C.
Basic of linux unix MCQs
182. What command is used to remove jobs from the print queue ?
A. lpq
B. lpr
C. lprm
D. lpc
✅ The correct answer is option C.
183. Which command is used with vi editor scroll half page backward ?
A. [Control-d]
B. [Control – u]
C. [Control-c]
D. [Control -P]
✅ The correct answer is option B.
184. The octal representation 652 indicates_________________?
A. Execute permission for the owner
B. Write permission for others
C. Read and write permission of groups
D. All of the above
✅ The correct answer is option B.
185. What command do you use to delete a file ?
A. rename
B. delete
C. rm
D. cp
✅ The correct answer is option C.
186. How many extended partitions can exist on one drive ?
A. 16
B. 4
C. 2
D. 1
✅ The correct answer is option D.
187. How can you add Amit, a new user, to your system ?
A. Using useradd
B. Using adduser
C. Using linuxconf
D. All of the above
✅ The correct answer is option D.
188. What command is used to copy a file ?
A. tar
B. cpio
C. cp
D. copy
✅ The correct answer is option C.
189. If a file has read and write permissions for the owner, then the octal representation of the permissions will be_________________?
A. 1
B. 6
C. 5
D. 3
✅ The correct answer is option B.
190. Which of the following special shell variables is used to process number of the last background job ?
A. $!
B. $#
C. 0
D. $*
✅ The correct answer is option A.