Add Text to multiple Text Files

I want to add two lines of text at the end of each text file , to around 100 txt Files. I searched google for the past 1 hour but I cannot find any softwares which is free or cracked to do so
ANyone has any solution ??
Answer #1
could’ve better spent that hour doing it manually..
Answer #2
Put all files in 1 folder then run this batch file:
@echo off
for %%x in (*.txt) do echo text line 1 >> %%x
for %%x in (*.txt) do echo text line 2 >> %%x
Change text line 1 and text line 2 to your text of course.