UGC NET CSE | January 2017 | Part 3 | Question: 74

Question

Unix command to change the case of first three lines of file “shortlist” from lower to upper

• A. $ \$ \text{tr } ‘[a-z]’ ‘[A-Z]’ \text{ shortlist}$ ¦ $\text{head } – 3$
• B. $\$ \text{head} – 3 \text{ shortlist}$ ¦ $\text{tr} ‘[a-z]’ ‘[A-Z]’$
• C. $\$ \text{tr head} – 3 \text{ shortlist }  ‘[A-Z]’ ‘[a-z]’$
• D. $\$ \text{tr shortlist head } – 3 ‘[a-z]’ ‘[A-Z]’$

Answer 1

ANS IS B

Answer 2

Ans is B.

you can get idea by this :https://www.youtube.com/watch?v=ElxP8ETil-Q