Oct  8 19:30:01 ssjiang CRON[1504866]: pam_unix(cron:session): session closed for user www-data
Oct  8 19:30:02 ssjiang CRON[1504864]: pam_unix(cron:session): session closed for user root
Oct  8 19:31:01 ssjiang CRON[1504865]: pam_unix(cron:session): session closed for user root
Oct  8 19:31:01 ssjiang CRON[1545308]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 19:31:01 ssjiang CRON[1545308]: pam_unix(cron:session): session closed for user www-data
Oct  8 19:32:01 ssjiang CRON[1545317]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 19:32:02 ssjiang CRON[1545317]: pam_unix(cron:session): session closed for user www-data
Oct  8 19:33:01 ssjiang CRON[1545326]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 19:33:02 ssjiang CRON[1545326]: pam_unix(cron:session): session closed for user www-data
Oct  8 19:34:01 ssjiang CRON[1545335]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 19:34:01 ssjiang CRON[1545335]: pam_unix(cron:session): session closed for user www-data
Oct  8 19:35:01 ssjiang CRON[1545347]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 19:35:01 ssjiang CRON[1545345]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 19:35:01 ssjiang CRON[1545346]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 19:35:01 ssjiang CRON[1545347]: pam_unix(cron:session): session closed for user root
Oct  8 19:35:02 ssjiang CRON[1545346]: pam_unix(cron:session): session closed for user www-data
Oct  8 19:36:01 ssjiang CRON[1585434]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 19:36:02 ssjiang CRON[1585434]: pam_unix(cron:session): session closed for user www-data
Oct  8 19:36:02 ssjiang CRON[1545345]: pam_unix(cron:session): session closed for user root
Oct  8 19:37:01 ssjiang CRON[1585793]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 19:37:02 ssjiang CRON[1585793]: pam_unix(cron:session): session closed for user www-data
Oct  8 19:38:01 ssjiang CRON[1585802]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 19:38:01 ssjiang CRON[1585802]: pam_unix(cron:session): session closed for user www-data
Oct  8 19:39:01 ssjiang CRON[1585813]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 19:39:01 ssjiang CRON[1585813]: pam_unix(cron:session): session closed for user root
Oct  8 19:39:01 ssjiang CRON[1585814]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 19:39:02 ssjiang CRON[1585814]: pam_unix(cron:session): session closed for user www-data
Oct  8 19:40:01 ssjiang CRON[1585894]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 19:40:01 ssjiang CRON[1585895]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 19:40:01 ssjiang CRON[1585896]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  8 19:40:01 ssjiang CRON[1585897]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  8 19:40:01 ssjiang CRON[1585897]: pam_unix(cron:session): session closed for user root
Oct  8 19:40:02 ssjiang CRON[1585896]: pam_unix(cron:session): session closed for user www-data