title: How to delete Cassandra snapshots which are older than 1 month
body: <p>All Cassandra snapshots can be deleted with </p>
  
  <p><code>nodetool -h localhost -p 7199 clearsnapshot</code></p>
  
  <p>and there is another to delete one specific snapshot. </p>
  
  <p><code>nodetool clearsnapshot -t snapshot_name</code></p>
  
  <p>However, I would like to delete all snapshots which are created 1 month ago. Is there any way to do this? </p>