Useful command-line options for GNU make

-n : Print the commands, but do not execute them
-e : variables from the environment take precedence
-d : print debugging info

• Finding all files containing string "get_map"
  $ find . -name *.c | xargs grep -l get_map
• A more sophisticated use:
  $ find . -name '*.[ch]' -print0 | xargs -r -0 grep -l get_map

  find: -print0
  xargs: -0 -r

• on Cygwin, Windows file are usually case insensitive, one might need/want to make the search case-insensitive using the -iname option
  $ find /cygdrive/c/WINDOWS/Microsoft.NET -iname "msbuild.*"