How can I used grep to find a file containing 2 strings? -

i searching definition of macro in project containing hundreds of source code files.

i sure macros defined in single file.

if grep -r search single macro, on 1000 hits occur.

i search each file, , find files containing both macro names.

can done grep?

for example this:

grep -r "macro1" , "macro2" ./

another way is

grep -rlz 'macro1' ./ | xargs -0 grep -l 'macro2'

grep -rlz 'macro1' ./ give filenames containing macro1
- -z separate filenames null character
xargs -0 grep -l 'macro2' give filenames containing macro2

Insert