Unix - Study Mode

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[#441] Which option performs recursive deletion?

(A) -r

(B) -R

(C) *

(D) -r and -R

Correct Answer

(D) -r and -R

[#442] Process table and process control block store same attributes of a process.

(A) True

(B) False

Correct Answer

(B) False

[#443] The . . . . . . . . function extracts a substring from a string.

(A) length

(B) index

(C) size

(D) substr

Correct Answer

(D) substr

[#444] . . . . . . . . command displays all the variables available in the current shell.

(A) env

(B) set

(C) var

(D) sh

Correct Answer

(B) set

[#445] Which command is used for running jobs in the background?

(A) nice

(B) ps

(C) nohup

(D) exec

Correct Answer

(C) nohup