https://unix.stackexchange.com/questions/288521/with-the-linux-cat-command-how-do-i-show-only-certain-lines-by-number

To print one line (5)

$ sed -n 5p file

Line 5

To print multiple lines (5 & 8)

$ sed -n -e 5p -e 8p file

Line 5

Line 8

To print specific range (5 - 8)

$ sed -n 5,8p file

Line 5

Line 6

Line 7

Line 8