21 Which of the following UNIX command shows the first 2 lines of Name.txt file? - ed a head out of b. echo question O tail d. sort 22 Which of the following UNIX command copy List.txt file with a new filenameName.txt? ed out of question a. cp Name.txt List.txt b. copy List.txt Name.txt c. copy Name.txt List.txt d. cp List.txt Name.txt 23 ed out of Which of the following UNIX command copy Name.txt file with a new filenameList1.txt? a. copy Name.txt List 1.txt b.copy List1.txt Name.txt c. cp Name.txt List 1.txt d. cp List1.txt Name.txt