Using combination of "head" and "tail" to display middle line of the file in Unix

Question

If I have a file name myownfile.txt which contains 3 lines of text.

foo
hello world
bar

I want to display the line in the middle which is hello world by using head and tail command only.

Answer 1

head -2 myownfile | tail -1 

should do what you want

Answer 2

head -2 displays first 2 lines of a file

$ head -2 myownfile.txt
foo
hello world

tail -1 displays last line of a file:

$ head -2 myownfile.txt | tail -1
hello world