Oct  7 04:30:01 ssjiang CRON[3547328]: pam_unix(cron:session): session closed for user www-data
Oct  7 04:30:02 ssjiang CRON[3547326]: pam_unix(cron:session): session closed for user root
Oct  7 04:31:01 ssjiang CRON[3586741]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 04:31:02 ssjiang CRON[3586741]: pam_unix(cron:session): session closed for user www-data
Oct  7 04:31:05 ssjiang CRON[3547327]: pam_unix(cron:session): session closed for user root
Oct  7 04:32:01 ssjiang CRON[3587573]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 04:32:02 ssjiang CRON[3587573]: pam_unix(cron:session): session closed for user www-data
Oct  7 04:33:01 ssjiang CRON[3587582]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 04:33:02 ssjiang CRON[3587582]: pam_unix(cron:session): session closed for user www-data
Oct  7 04:34:01 ssjiang CRON[3587592]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 04:34:01 ssjiang CRON[3587592]: pam_unix(cron:session): session closed for user www-data
Oct  7 04:35:01 ssjiang CRON[3587603]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 04:35:01 ssjiang CRON[3587601]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 04:35:01 ssjiang CRON[3587603]: pam_unix(cron:session): session closed for user root
Oct  7 04:35:01 ssjiang CRON[3587602]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 04:35:02 ssjiang CRON[3587602]: pam_unix(cron:session): session closed for user www-data
Oct  7 04:36:01 ssjiang CRON[3626676]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 04:36:02 ssjiang CRON[3626676]: pam_unix(cron:session): session closed for user www-data
Oct  7 04:36:06 ssjiang CRON[3587601]: pam_unix(cron:session): session closed for user root
Oct  7 04:37:01 ssjiang CRON[3627809]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 04:37:02 ssjiang CRON[3627809]: pam_unix(cron:session): session closed for user www-data
Oct  7 04:38:01 ssjiang CRON[3627818]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 04:38:01 ssjiang CRON[3627818]: pam_unix(cron:session): session closed for user www-data
Oct  7 04:39:01 ssjiang CRON[3627829]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 04:39:01 ssjiang CRON[3627830]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 04:39:01 ssjiang CRON[3627829]: pam_unix(cron:session): session closed for user root
Oct  7 04:39:02 ssjiang CRON[3627830]: pam_unix(cron:session): session closed for user www-data
Oct  7 04:40:01 ssjiang CRON[3627909]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 04:40:01 ssjiang CRON[3627907]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 04:40:01 ssjiang CRON[3627908]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 04:40:01 ssjiang CRON[3627906]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 04:40:01 ssjiang CRON[3627909]: pam_unix(cron:session): session closed for user root
Oct  7 04:40:02 ssjiang CRON[3627908]: pam_unix(cron:session): session closed for user www-data