Unix - Study Mode

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[#616] Suppose x =10, then what will be the value of x$x$?

(A) undefined

(B) erroneous

(C) 100

(D) x10$

Correct Answer

(D) x10$

[#617] Which of the following is a built-in function for awk?

(A) length

(B) index

(C) size

(D) length and index

Correct Answer

(A) length

[#618] Which option is used with the head command to specify line count to display?

(A) -a

(B) -h

(C) -n

(D) -o

Correct Answer

(C) -n

[#619] until loop operates with a reverse logic as used in while loop.

(A) True

(B) False

Correct Answer

(A) True

[#620] To test whether perl is in your PATH, use . . . . . . . .

(A) perl -e

(B) perl -i

(C) perl -el

(D) perl -ed

Correct Answer

(A) perl -e