Oct  8 03:40:01 ssjiang CRON[2185795]: pam_unix(cron:session): session closed for user www-data
Oct  8 03:40:02 ssjiang CRON[2185793]: pam_unix(cron:session): session closed for user root
Oct  8 03:41:01 ssjiang CRON[2225603]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 03:41:01 ssjiang CRON[2225603]: pam_unix(cron:session): session closed for user www-data
Oct  8 03:41:03 ssjiang CRON[2185794]: pam_unix(cron:session): session closed for user root
Oct  8 03:42:01 ssjiang CRON[2226243]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 03:42:02 ssjiang CRON[2226243]: pam_unix(cron:session): session closed for user www-data
Oct  8 03:43:01 ssjiang CRON[2226252]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 03:43:02 ssjiang CRON[2226252]: pam_unix(cron:session): session closed for user www-data
Oct  8 03:44:01 ssjiang CRON[2226261]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 03:44:01 ssjiang CRON[2226261]: pam_unix(cron:session): session closed for user www-data
Oct  8 03:45:01 ssjiang CRON[2226270]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 03:45:01 ssjiang CRON[2226272]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 03:45:01 ssjiang CRON[2226271]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 03:45:01 ssjiang CRON[2226272]: pam_unix(cron:session): session closed for user root
Oct  8 03:45:02 ssjiang CRON[2226271]: pam_unix(cron:session): session closed for user www-data
Oct  8 03:46:01 ssjiang CRON[2263804]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 03:46:02 ssjiang CRON[2263804]: pam_unix(cron:session): session closed for user www-data
Oct  8 03:46:08 ssjiang CRON[2226270]: pam_unix(cron:session): session closed for user root
Oct  8 03:47:01 ssjiang CRON[2266718]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 03:47:02 ssjiang CRON[2266718]: pam_unix(cron:session): session closed for user www-data
Oct  8 03:48:01 ssjiang CRON[2266727]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 03:48:02 ssjiang CRON[2266727]: pam_unix(cron:session): session closed for user www-data
Oct  8 03:49:01 ssjiang CRON[2266737]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 03:49:01 ssjiang CRON[2266737]: pam_unix(cron:session): session closed for user www-data
Oct  8 03:50:01 ssjiang CRON[2266749]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 03:50:01 ssjiang CRON[2266746]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 03:50:01 ssjiang CRON[2266748]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 03:50:01 ssjiang CRON[2266747]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 03:50:01 ssjiang CRON[2266749]: pam_unix(cron:session): session closed for user root
Oct  8 03:50:02 ssjiang CRON[2266748]: pam_unix(cron:session): session closed for user www-data