Oct  9 12:50:03 ssjiang CRON[1578220]: pam_unix(cron:session): session closed for user root
Oct  9 12:51:01 ssjiang CRON[1617697]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  9 12:51:02 ssjiang CRON[1617697]: pam_unix(cron:session): session closed for user www-data
Oct  9 12:51:06 ssjiang CRON[1578221]: pam_unix(cron:session): session closed for user root
Oct  9 12:52:01 ssjiang CRON[1618912]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  9 12:52:02 ssjiang CRON[1618912]: pam_unix(cron:session): session closed for user www-data
Oct  9 12:53:01 ssjiang CRON[1618921]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  9 12:53:02 ssjiang CRON[1618921]: pam_unix(cron:session): session closed for user www-data
Oct  9 12:54:02 ssjiang CRON[1618931]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  9 12:54:02 ssjiang CRON[1618931]: pam_unix(cron:session): session closed for user www-data
Oct  9 12:55:01 ssjiang CRON[1618942]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  9 12:55:01 ssjiang CRON[1618942]: pam_unix(cron:session): session closed for user root
Oct  9 12:55:01 ssjiang CRON[1618940]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  9 12:55:01 ssjiang CRON[1618941]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  9 12:55:02 ssjiang CRON[1618941]: pam_unix(cron:session): session closed for user www-data
Oct  9 12:56:01 ssjiang CRON[1658105]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  9 12:56:02 ssjiang CRON[1658105]: pam_unix(cron:session): session closed for user www-data
Oct  9 12:56:07 ssjiang CRON[1618940]: pam_unix(cron:session): session closed for user root
Oct  9 12:57:01 ssjiang CRON[1659629]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  9 12:57:01 ssjiang CRON[1659629]: pam_unix(cron:session): session closed for user www-data
Oct  9 12:58:01 ssjiang CRON[1659638]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  9 12:58:02 ssjiang CRON[1659638]: pam_unix(cron:session): session closed for user www-data
Oct  9 12:59:01 ssjiang CRON[1659648]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  9 12:59:02 ssjiang CRON[1659648]: pam_unix(cron:session): session closed for user www-data
Oct  9 13:00:01 ssjiang CRON[1659661]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  9 13:00:01 ssjiang CRON[1659659]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  9 13:00:01 ssjiang CRON[1659660]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  9 13:00:01 ssjiang CRON[1659661]: pam_unix(cron:session): session closed for user root
Oct  9 13:00:01 ssjiang CRON[1659658]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)