Unix - Study Mode

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[#1071] If we wish to delete a remove a file forcefully, we can use . . . . . . . . option with rm command.

(A) -i

(B) -r

(C) -R

(D) -f

Correct Answer

(D) -f

[#1072] Which of the following undo a most recent single editing change?

(A) u

(B) U

(C) uu

(D) yy

Correct Answer

(A) u

[#1073] The segment representing the constants, globals and static variables is called:

(A) text segment

(B) data segment

(C) stack

(D) heap

Correct Answer

(B) data segment

[#1074] Character class is used for matching a group of characters enclosed within a pair of . . . . . . . .

(A) ( )

(B) " "

(C) [ ]

(D) { }

Correct Answer

(C) [ ]

[#1075] To find out how efficiently a program a used the system resources, which command is used?

(A) sys

(B) time

(C) crontab

(D) daemon

Correct Answer

(B) time