combining cat and tail

I am trying to combine cat and tail commands:

Like this:

I have file name "text1" and want to combine to file name "text2". But first I wanted to remove 7 lines from file text1 before I combine to file "text2"

     tail --lines=+7 text1 | cat  text2 > out_put 

This does not work for me on Ubuntu 12.04