Oct  8 08:50:02 ssjiang CRON[515678]: pam_unix(cron:session): session closed for user root
Oct  8 08:51:01 ssjiang CRON[555870]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 08:51:02 ssjiang CRON[515679]: pam_unix(cron:session): session closed for user root
Oct  8 08:51:02 ssjiang CRON[555870]: pam_unix(cron:session): session closed for user www-data
Oct  8 08:52:01 ssjiang CRON[556132]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 08:52:02 ssjiang CRON[556132]: pam_unix(cron:session): session closed for user www-data
Oct  8 08:53:01 ssjiang CRON[556141]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 08:53:01 ssjiang CRON[556141]: pam_unix(cron:session): session closed for user www-data
Oct  8 08:54:01 ssjiang CRON[556150]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 08:54:02 ssjiang CRON[556150]: pam_unix(cron:session): session closed for user www-data
Oct  8 08:55:01 ssjiang CRON[556159]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 08:55:01 ssjiang CRON[556161]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 08:55:01 ssjiang CRON[556160]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 08:55:01 ssjiang CRON[556161]: pam_unix(cron:session): session closed for user root
Oct  8 08:55:02 ssjiang CRON[556160]: pam_unix(cron:session): session closed for user www-data
Oct  8 08:56:01 ssjiang CRON[596118]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 08:56:02 ssjiang CRON[596118]: pam_unix(cron:session): session closed for user www-data
Oct  8 08:56:03 ssjiang CRON[556159]: pam_unix(cron:session): session closed for user root
Oct  8 08:57:01 ssjiang CRON[596609]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 08:57:01 ssjiang CRON[596609]: pam_unix(cron:session): session closed for user www-data
Oct  8 08:58:01 ssjiang CRON[596618]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 08:58:02 ssjiang CRON[596618]: pam_unix(cron:session): session closed for user www-data
Oct  8 08:59:01 ssjiang CRON[596628]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 08:59:02 ssjiang CRON[596628]: pam_unix(cron:session): session closed for user www-data
Oct  8 09:00:01 ssjiang CRON[596639]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 09:00:01 ssjiang CRON[596638]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 09:00:01 ssjiang CRON[596640]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 09:00:01 ssjiang CRON[596637]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 09:00:01 ssjiang CRON[596640]: pam_unix(cron:session): session closed for user root