Oct  2 04:00:04 ssjiang CRON[623345]: pam_unix(cron:session): session closed for user root
Oct  2 04:01:01 ssjiang CRON[661813]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  2 04:01:01 ssjiang CRON[661812]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:01:02 ssjiang CRON[661812]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:01:02 ssjiang CRON[661813]: pam_unix(cron:session): session closed for user root
Oct  2 04:01:04 ssjiang CRON[623346]: pam_unix(cron:session): session closed for user root
Oct  2 04:02:01 ssjiang CRON[662747]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:02:02 ssjiang CRON[662747]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:03:01 ssjiang CRON[662756]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:03:02 ssjiang CRON[662756]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:04:01 ssjiang CRON[662765]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:04:02 ssjiang CRON[662765]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:05:01 ssjiang CRON[662774]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  2 04:05:01 ssjiang CRON[662776]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  2 04:05:01 ssjiang CRON[662775]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:05:01 ssjiang CRON[662776]: pam_unix(cron:session): session closed for user root
Oct  2 04:05:01 ssjiang CRON[662775]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:06:01 ssjiang CRON[701317]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:06:02 ssjiang CRON[701317]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:06:04 ssjiang CRON[662774]: pam_unix(cron:session): session closed for user root
Oct  2 04:07:01 ssjiang CRON[701961]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:07:01 ssjiang CRON[701961]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:08:01 ssjiang CRON[701970]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:08:02 ssjiang CRON[701970]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:09:01 ssjiang CRON[702052]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  2 04:09:01 ssjiang CRON[702053]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:09:01 ssjiang CRON[702052]: pam_unix(cron:session): session closed for user root
Oct  2 04:09:02 ssjiang CRON[702053]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:10:01 ssjiang CRON[702064]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  2 04:10:01 ssjiang CRON[702063]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  2 04:10:01 ssjiang CRON[702066]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  2 04:10:01 ssjiang CRON[702065]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:10:01 ssjiang CRON[702066]: pam_unix(cron:session): session closed for user root
Oct  2 04:10:02 ssjiang CRON[702065]: pam_unix(cron:session): session closed for user www-data