Basic of Linux/Unix - Computer Science Questions & Answers

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21 . What command is used to display the characteristics of a process?

A.	au	B.	ps
C.	du	D.	pid

22 . What command is not used to list the files chap01, chap02 and chap04?

23 . What command is used with vi editor to replace text from cursor to right

A.	S	B.	s
C.	R	D.	r

24 . What sign is used to back up over typing errors in vi?

A.	!	B.	$
C.	#	D.	@

25 . What sign is used to erase or kill an entire line you have typed and start you are on a new line (but not display a new prompt)?

A.	!	B.	$
C.	#	D.	@