Oct  5 19:50:02 ssjiang CRON[418371]: pam_unix(cron:session): session closed for user root
Oct  5 19:51:01 ssjiang CRON[457391]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  5 19:51:02 ssjiang CRON[457391]: pam_unix(cron:session): session closed for user www-data
Oct  5 19:51:06 ssjiang CRON[418372]: pam_unix(cron:session): session closed for user root
Oct  5 19:52:01 ssjiang CRON[458223]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  5 19:52:01 ssjiang CRON[458223]: pam_unix(cron:session): session closed for user www-data
Oct  5 19:53:01 ssjiang CRON[458232]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  5 19:53:02 ssjiang CRON[458232]: pam_unix(cron:session): session closed for user www-data
Oct  5 19:54:01 ssjiang CRON[458241]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  5 19:54:02 ssjiang CRON[458241]: pam_unix(cron:session): session closed for user www-data
Oct  5 19:55:01 ssjiang CRON[458254]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  5 19:55:01 ssjiang CRON[458252]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  5 19:55:01 ssjiang CRON[458254]: pam_unix(cron:session): session closed for user root
Oct  5 19:55:01 ssjiang CRON[458253]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  5 19:55:02 ssjiang CRON[458253]: pam_unix(cron:session): session closed for user www-data
Oct  5 19:56:01 ssjiang CRON[496896]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  5 19:56:01 ssjiang CRON[496896]: pam_unix(cron:session): session closed for user www-data
Oct  5 19:56:06 ssjiang CRON[458252]: pam_unix(cron:session): session closed for user root
Oct  5 19:57:01 ssjiang CRON[498099]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  5 19:57:02 ssjiang CRON[498099]: pam_unix(cron:session): session closed for user www-data
Oct  5 19:58:01 ssjiang CRON[498108]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  5 19:58:01 ssjiang CRON[498108]: pam_unix(cron:session): session closed for user www-data
Oct  5 19:59:01 ssjiang CRON[498118]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  5 19:59:02 ssjiang CRON[498118]: pam_unix(cron:session): session closed for user www-data
Oct  5 20:00:01 ssjiang CRON[498129]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  5 20:00:01 ssjiang CRON[498132]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  5 20:00:01 ssjiang CRON[498132]: pam_unix(cron:session): session closed for user root
Oct  5 20:00:01 ssjiang CRON[498131]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  5 20:00:01 ssjiang CRON[498130]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)