ref="9.0.3"
new="10.0.0"
aneksajo="aneksajo"
aneksajo_patched="aneksajo_patched"

diff ${ref} ${aneksajo} > ref_aneksajo.diff
diff ${new} ${aneksajo} > new_aneksajo.diff
diff -u ${ref} ${aneksajo} > ref_aneksajo_u.diff
patch -o ${aneksajo_patched} ${new} < ref_aneksajo_u.diff 
diff ${new} ${aneksajo_patched} > patched.diff
diff ref_aneksajo.diff patched.diff > differences