Unix - Study Mode

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[#971] To replace the string 'director' in the first five lines of file emp.lst with 'manager' we can use . . . . . . . .

(A) sed 's/director/manager/' emp.lst

(B) sed '1-5s/director/manager/' emp.lst

(C) sed '1,5s/director/manager/' emp.lst

(D) sed '15s

Correct Answer

(C) sed '1,5s/director/manager/' emp.lst

[#972] We can use relative pathname in the path list while using find command.

(A) True

(B) False

Correct Answer

(A) True

[#973] Which of the following symbols are used for matching a pattern at specified locations?

(A) *

(B) ^

(C) $

(D) ^ and $

Correct Answer

(D) ^ and $

[#974] expr can perform . . . . . . . . arithmetic operations.

(A) 2

(B) 4

(C) 5

(D) 3

Correct Answer

(C) 5

[#975] $ cd . . is used to move . . . . . . . . level up in the file hierarchy.

(A) two

(B) one

(C) three

(D) zero

Correct Answer

(B) one