源代码中的Grep，不包括构建文件夹

Question

I use grep to look for a variable usage or a function call in the following way

 grep -Rni <function_name>

However, the search also includes my build and build_debug folders. Considering the case in which my code is structured as following

root/
  | 
  ->build
  | 
  ->build_debug
  |
  ->pkg_1
     |
     ->src
     |
     ->include
  ->pkg_2
     |
     ->src
     |
     ->include

How can I modify the query so that it does not look into build and build_debug? Thanks!

Answer 1

grep --exclude-dir build --exclude-dir build_debug -Rni