Oct  2 04:40:05 ssjiang CRON[937437]: pam_unix(cron:session): session closed for user root
Oct  2 04:41:01 ssjiang CRON[976030]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:41:02 ssjiang CRON[976030]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:41:03 ssjiang CRON[937438]: pam_unix(cron:session): session closed for user root
Oct  2 04:42:01 ssjiang CRON[976626]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:42:02 ssjiang CRON[976626]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:43:01 ssjiang CRON[976636]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:43:02 ssjiang CRON[976636]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:44:01 ssjiang CRON[976646]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:44:01 ssjiang CRON[976646]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:45:01 ssjiang CRON[976656]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:45:01 ssjiang CRON[976657]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  2 04:45:01 ssjiang CRON[976655]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  2 04:45:01 ssjiang CRON[976657]: pam_unix(cron:session): session closed for user root
Oct  2 04:45:02 ssjiang CRON[976656]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:46:01 ssjiang CRON[1015154]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:46:02 ssjiang CRON[1015154]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:46:04 ssjiang CRON[976655]: pam_unix(cron:session): session closed for user root
Oct  2 04:47:01 ssjiang CRON[1015842]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:47:02 ssjiang CRON[1015842]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:48:01 ssjiang CRON[1015852]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:48:01 ssjiang CRON[1015852]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:49:01 ssjiang CRON[1015862]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:49:02 ssjiang CRON[1015862]: pam_unix(cron:session): session closed for user www-data
Oct  2 04:50:01 ssjiang CRON[1015872]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  2 04:50:01 ssjiang CRON[1015873]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  2 04:50:01 ssjiang CRON[1015871]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  2 04:50:01 ssjiang CRON[1015874]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  2 04:50:01 ssjiang CRON[1015874]: pam_unix(cron:session): session closed for user root
Oct  2 04:50:02 ssjiang CRON[1015873]: pam_unix(cron:session): session closed for user www-data