uptime

     #               Uptime | System                                     Boot up
----------------------------+---------------------------------------------------
     1     1 day , 17:58:29 | Linux 2.6.32-5-686-bigme  Wed Oct 26 04:40:31 2011
     2    16 days, 09:07:14 | Linux 2.6.32-5-686-bigme  Thu Oct 27 22:39:06 2011
     3     0 days, 03:06:13 | Linux 2.6.32-5-686-bigme  Sun Nov 13 07:51:46 2011
     4     1 day , 01:53:12 | Linux 2.6.32-5-686-bigme  Sun Nov 13 11:02:40 2011
     5     1 day , 02:11:21 | Linux 2.6.32-5-686-bigme  Mon Nov 14 13:01:42 2011
     6     0 days, 00:02:13 | Linux 2.6.32-5-686-bigme  Tue Nov 15 15:18:40 2011
->   7     0 days, 16:51:25 | Linux 2.6.32-5-686-bigme  Tue Nov 15 15:25:49 2011
----------------------------+---------------------------------------------------
    up    21 days, 03:06:02 | since                     Wed Oct 26 04:40:31 2011
  down     0 days, 00:26:36 | since                     Wed Oct 26 04:40:31 2011
   %up               99.913 | since                     Wed Oct 26 04:40:31 2011