title: Find occurrences of a string in files and display "filename - count" through batch file
body: <p>Batch file to search every single subfolder and every single file inside a directory and count the number of times a particular string is present in each file.</p>
  
  <p>Would be useful if output is  "filename - count".</p>
  
  <p>Can do find /c "Microsoft" *.txt 
   This works if all the files are in one folder.</p>
  
  <p>How do you make the find loop through all the subfolders and each of its files and display the same result.</p>
  
  <p>Findstr has /s which does that, doesnt work on find.</p>