Oct  7 06:50:03 ssjiang CRON[498196]: pam_unix(cron:session): session closed for user root
Oct  7 06:51:01 ssjiang CRON[537545]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 06:51:02 ssjiang CRON[537545]: pam_unix(cron:session): session closed for user www-data
Oct  7 06:51:05 ssjiang CRON[498197]: pam_unix(cron:session): session closed for user root
Oct  7 06:52:01 ssjiang CRON[538407]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 06:52:02 ssjiang CRON[538407]: pam_unix(cron:session): session closed for user www-data
Oct  7 06:53:01 ssjiang CRON[538416]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 06:53:02 ssjiang CRON[538416]: pam_unix(cron:session): session closed for user www-data
Oct  7 06:54:01 ssjiang CRON[538425]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 06:54:01 ssjiang CRON[538425]: pam_unix(cron:session): session closed for user www-data
Oct  7 06:55:01 ssjiang CRON[538435]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 06:55:01 ssjiang CRON[538437]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 06:55:01 ssjiang CRON[538436]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 06:55:01 ssjiang CRON[538437]: pam_unix(cron:session): session closed for user root
Oct  7 06:55:02 ssjiang CRON[538436]: pam_unix(cron:session): session closed for user www-data
Oct  7 06:56:01 ssjiang CRON[576829]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 06:56:02 ssjiang CRON[576829]: pam_unix(cron:session): session closed for user www-data
Oct  7 06:56:07 ssjiang CRON[538435]: pam_unix(cron:session): session closed for user root
Oct  7 06:57:01 ssjiang CRON[578644]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 06:57:02 ssjiang CRON[578644]: pam_unix(cron:session): session closed for user www-data
Oct  7 06:58:01 ssjiang CRON[578653]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 06:58:02 ssjiang CRON[578653]: pam_unix(cron:session): session closed for user www-data
Oct  7 06:59:01 ssjiang CRON[578663]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 06:59:01 ssjiang CRON[578663]: pam_unix(cron:session): session closed for user www-data
Oct  7 07:00:01 ssjiang CRON[578676]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 07:00:01 ssjiang CRON[578676]: pam_unix(cron:session): session closed for user root
Oct  7 07:00:01 ssjiang CRON[578673]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 07:00:01 ssjiang CRON[578675]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 07:00:01 ssjiang CRON[578674]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)