title: MongoDB: unconditional updates?
body: <p>This seems like a silly question but I haven't yet found the answer. If I simply wanted to add the same field->value to EVERY record in a MongoDB collection, what would be the appropriate shell command to do so? I tried doing a multi update with a blank query ({}) but that resulted in this error:</p>
  
  <p><strong>multi update only works with $ operators</strong></p>
  
  <p>I'm a bit puzzled about how to get around this. Any suggestions?</p>