title: How to add a line of text to multiple files in a directory
body: <p>i need to add a line of text at the begininng of each file (commands text) in a directoy (not all of them).</p>
  
  <p>is there any way to do so ?</p>
  
  <p>the line would be something like ID DATE NAME  with spaces inbetween for example : a12345 20190418 tarik</p>
  
  <p>(the files do not contain .txt at the end names are more like .abcd_1452a)</p>