271. Which of following commands is used for an automatic reminder service ?
A. write
B. mesg
C. calendar
D. mail
✅ The correct answer is option C.
Basic of linux unix MCQs
272. Which of the following is not a communication command?
A. write
B. mesg
C. mail
D. grep
✅ The correct answer is option D.
273. What command is used to count the number of files in the current directory by using pipes ?
A. ls | ws – c
B. ls | wc – w
C. ls | wc – l
D. ls | wc
✅ The correct answer is option C.
274. The command chmod 761 note is equivalent to_________________?
A. chmod 167 note
B. chmod u=rwx, g=rw, o=x note
C. chmo a =761 note
D. chmod 4=7, g=6,0 =1 note
✅ The correct answer is option B.
275. Which of the following commands is used to list contents of directories ?
A. ls
B. lp
C. dir
D. tar
✅ The correct answer is option A.
276. To build a modularized kernel, the kernel-headers and kernel-source packages must first be installed. Where will you find the kernel-headers and kernel-source ?
A. /usr/local
B. /usr/src/linux
C. /usr/sre/redhat
D. /usr/bin
✅ The correct answer is option B.
277. What command is used to compare the files ?
A. ccp
B. du
C. cmp
D. comp
✅ The correct answer is option C.