linux diff to only output filename and nothing else

Question

I'm trying to get diff to output only the name of the modified files. I tried to use the -q option but it's still giving me too much output :

What i get now is this :

files path/to/file1/file1 and path/to/file2/file2 are different

And i would like this :

path/to/file1/file1

Any ideas on how to do this ?

Answer 1

Use the exit status of diff:

if ! diff -q file1 file2 >/dev/null; then echo file1; fi

Answer 2

You could do: diff -q file1 file2 | cut -f2 -d' '