Unix - Study Mode

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[#491] When the pattern is not found in a file, grep command silently returns the prompt.

(A) True

(B) False

Correct Answer

(A) True

[#492] Which option is used with touch command which forces the command not to create file, if it does not exists.

(A) -h

(B) -c

(C) -t

(D) -f

Correct Answer

(B) -c

[#493] C shell uses which command for assigning values to variables?

(A) =

(B) set

(C) unset

(D) $

Correct Answer

(B) set

[#494] To return back to the editor from shell prompt we use . . . . . . . . command.

(A) fg

(B) exit

(C) back

(D) fg and exit

Correct Answer

(D) fg and exit

[#495] tee is an internal command.

(A) True

(B) False

Correct Answer

(B) False