Unix - Study Mode

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[#821] The command that can be used to restrict incoming messages to a user is

(A) mesg

(B) grep

(C) halt

(D) sleep

Correct Answer

(A) mesg

[#822] Which of the following commands is used to copy directory structures in and out

(A) cp

(B) cpio

(C) cp - p

(D) copy

Correct Answer

(B) cpio

[#823] Which of following commands is used for an automatic reminder service?

(A) write

(B) mesg

(C) calendar

(D) mail

Correct Answer

(C) calendar

[#824] Which command allows you to view your file 24 lines at a time?

(A) more

(B) pg

(C) cat

(D) lp

Correct Answer

(B) pg

[#825] Which of the following special shell variables is used to process number of the current shell?

(A) $!

(B) $$

(C) $0

(D) $*

Correct Answer

(B) $$