title: Linux - Save only recent 10 folders and delete the rest
body: <p>I have a folder that contains versions of my application, each time I upload a new version a new sub-folder is created for it, the sub-folder name is the current timestamp, here is a printout of the main folder used (ls -l |grep ^d):</p>
  
  <pre><code>drwxrwxr-x 7 root root 4096 2011-03-31 16:18 20110331161649
  drwxrwxr-x 7 root root 4096 2011-03-31 16:21 20110331161914
  drwxrwxr-x 7 root root 4096 2011-03-31 16:53 20110331165035
  drwxrwxr-x 7 root root 4096 2011-03-31 16:59 20110331165712
  drwxrwxr-x 7 root root 4096 2011-04-03 20:18 20110403201607
  drwxrwxr-x 7 root root 4096 2011-04-03 20:38 20110403203613
  drwxrwxr-x 7 root root 4096 2011-04-04 14:39 20110405143725
  drwxrwxr-x 7 root root 4096 2011-04-06 15:24 20110406151805
  drwxrwxr-x 7 root root 4096 2011-04-06 15:36 20110406153157
  drwxrwxr-x 7 root root 4096 2011-04-06 16:02 20110406155913
  drwxrwxr-x 7 root root 4096 2011-04-10 21:10 20110410210928
  drwxrwxr-x 7 root root 4096 2011-04-10 21:50 20110410214939
  drwxrwxr-x 7 root root 4096 2011-04-10 22:15 20110410221414
  drwxrwxr-x 7 root root 4096 2011-04-11 22:19 20110411221810
  drwxrwxr-x 7 root root 4096 2011-05-01 21:30 20110501212953
  drwxrwxr-x 7 root root 4096 2011-05-01 23:02 20110501230121
  drwxrwxr-x 7 root root 4096 2011-05-03 21:57 20110503215252
  drwxrwxr-x 7 root root 4096 2011-05-06 16:17 20110506161546
  drwxrwxr-x 7 root root 4096 2011-05-11 10:00 20110511095709
  drwxrwxr-x 7 root root 4096 2011-05-11 10:13 20110511100938
  drwxrwxr-x 7 root root 4096 2011-05-12 14:34 20110512143143
  drwxrwxr-x 7 root root 4096 2011-05-13 22:13 20110513220824
  drwxrwxr-x 7 root root 4096 2011-05-14 22:26 20110514222548
  drwxrwxr-x 7 root root 4096 2011-05-14 23:03 20110514230258
  </code></pre>
  
  <p>I'm looking for a command that will leave the last 10 versions (sub-folders) and deletes the rest.</p>
  
  <p>Any thoughts?</p>