Compare 2 files and remove any lines in file2 when they match values found in file1

Question

I have two files. i am trying to remove any lines in file2 when they match values found in file1. One file has a listing like so:

File1

ZNI008
ZNI009         


        

Answer 1

I like the grep solution from byrondrossos better, but here's another option:

sed $(awk '{printf("-e /%s/d ", $1)}' file1) file2 > file3