title: How can I use grep to get all the lines that contains string1 and string2 separated by space?
body: <p>Line1: ................. <br>
  Line2: @hello1 @hello2 @hello3<br>
  Line3: .................<br>
  Line4: .................<br>
  Line5: @hello1 @hello4 @hello3<br>
  Line6: @hello1 @hello2 @hello3<br>
  Line7: .................<br></p>
  
  <p>I have files that look similar in terms of lines on one of my project directories. I want to get the counts of all the lines that contain <b>@hello1</b> and <b>@hello2</b>. In this case I would get 2 as a result only for this file. However, I want to do this recursively.</p>