Oct  4 15:00:03 ssjiang CRON[3409458]: pam_unix(cron:session): session closed for user www-data
Oct  4 15:00:03 ssjiang CRON[3409456]: pam_unix(cron:session): session closed for user root
Oct  4 15:01:01 ssjiang CRON[3448770]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  4 15:01:02 ssjiang CRON[3448770]: pam_unix(cron:session): session closed for user www-data
Oct  4 15:01:02 ssjiang CRON[3409457]: pam_unix(cron:session): session closed for user root
Oct  4 15:02:01 ssjiang CRON[3449146]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  4 15:02:02 ssjiang CRON[3449146]: pam_unix(cron:session): session closed for user www-data
Oct  4 15:03:01 ssjiang CRON[3449155]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  4 15:03:02 ssjiang CRON[3449155]: pam_unix(cron:session): session closed for user www-data
Oct  4 15:04:01 ssjiang CRON[3449164]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  4 15:04:02 ssjiang CRON[3449164]: pam_unix(cron:session): session closed for user www-data
Oct  4 15:05:01 ssjiang CRON[3449173]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  4 15:05:01 ssjiang CRON[3449175]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  4 15:05:01 ssjiang CRON[3449174]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  4 15:05:01 ssjiang CRON[3449175]: pam_unix(cron:session): session closed for user root
Oct  4 15:05:01 ssjiang CRON[3449174]: pam_unix(cron:session): session closed for user www-data
Oct  4 15:05:59 ssjiang CRON[3449173]: pam_unix(cron:session): session closed for user root
Oct  4 15:06:01 ssjiang CRON[3488833]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  4 15:06:01 ssjiang CRON[3488833]: pam_unix(cron:session): session closed for user www-data
Oct  4 15:07:01 ssjiang CRON[3488842]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  4 15:07:02 ssjiang CRON[3488842]: pam_unix(cron:session): session closed for user www-data
Oct  4 15:08:01 ssjiang CRON[3488886]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  4 15:08:02 ssjiang CRON[3488886]: pam_unix(cron:session): session closed for user www-data
Oct  4 15:09:01 ssjiang CRON[3488896]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  4 15:09:01 ssjiang CRON[3488896]: pam_unix(cron:session): session closed for user root
Oct  4 15:09:01 ssjiang CRON[3488897]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  4 15:09:01 ssjiang CRON[3488897]: pam_unix(cron:session): session closed for user www-data
Oct  4 15:10:01 ssjiang CRON[3488978]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  4 15:10:01 ssjiang CRON[3488981]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  4 15:10:01 ssjiang CRON[3488981]: pam_unix(cron:session): session closed for user root
Oct  4 15:10:01 ssjiang CRON[3488980]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  4 15:10:01 ssjiang CRON[3488979]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  4 15:10:02 ssjiang CRON[3488980]: pam_unix(cron:session): session closed for user www-data