Unix - Study Mode

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[#176] What is the exit status of cmp command if both the files are identical?

(A) 0

(B) 1

(C) 2

(D) undefined

Correct Answer

(A) 0

[#177] To quit vi editor without saving the buffer we can use

(A) :q

(B) :c

(C) :w

(D) :q!

Correct Answer

(D) :q!

[#178] Which one of the following command will be used for quitting after selecting 3 lines from file emp.lst?

(A) sed -n 3 emp.lst

(B) sed -i 1-3 emp.lst

(C) sed '3q' emp.lst

(D) sed -n

Correct Answer

(C) sed '3q' emp.lst

[#179] For navigation purposes, the mode should be . . . . . . . . mode.

(A) command

(B) input

(C) insert

(D) ex

Correct Answer

(A) command

[#180] -a option is used with touch command to alter the time of last access.

(A) True

(B) False

Correct Answer

(A) True