Website hacked, how to remove malicious code with SED / GREP

Question

a website of mine is hacked. In every php file a line of code is added. I wont post the complete code here, but it starts with:

Answer 1

You can try this : https://github.com/daniyalahmadk/RMCI

Just need to put that code in box and hit submit, it will search code from files and remove them all once.