Which command will delete all the blank lines in file old.txt?
A. sed ‘/d’ old.txt
B. sed ‘/^/d’ old.txt
C. sed ‘/^$/d’ old.txt
D. sed ‘/^*/d’ old.txt
Answer:A
Which command will delete all the blank lines in file old.txt?
A. sed ‘/d’ old.txt B. sed ‘/^/d’ old.txt C. sed ‘/^$/d’ old.txt D. sed ‘/^*/d’ old.txt
Explanation:None.