Oct  7 16:30:03 ssjiang CRON[974371]: pam_unix(cron:session): session closed for user root
Oct  7 16:31:01 ssjiang CRON[1013834]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 16:31:02 ssjiang CRON[1013834]: pam_unix(cron:session): session closed for user www-data
Oct  7 16:31:05 ssjiang CRON[974372]: pam_unix(cron:session): session closed for user root
Oct  7 16:32:01 ssjiang CRON[1014582]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 16:32:02 ssjiang CRON[1014582]: pam_unix(cron:session): session closed for user www-data
Oct  7 16:33:01 ssjiang CRON[1014591]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 16:33:01 ssjiang CRON[1014591]: pam_unix(cron:session): session closed for user www-data
Oct  7 16:34:01 ssjiang CRON[1014601]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 16:34:02 ssjiang CRON[1014601]: pam_unix(cron:session): session closed for user www-data
Oct  7 16:35:01 ssjiang CRON[1014610]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 16:35:01 ssjiang CRON[1014611]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 16:35:01 ssjiang CRON[1014612]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 16:35:01 ssjiang CRON[1014612]: pam_unix(cron:session): session closed for user root
Oct  7 16:35:02 ssjiang CRON[1014611]: pam_unix(cron:session): session closed for user www-data
Oct  7 16:36:01 ssjiang CRON[1054161]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 16:36:01 ssjiang CRON[1054161]: pam_unix(cron:session): session closed for user www-data
Oct  7 16:36:03 ssjiang CRON[1014610]: pam_unix(cron:session): session closed for user root
Oct  7 16:37:01 ssjiang CRON[1054817]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 16:37:02 ssjiang CRON[1054817]: pam_unix(cron:session): session closed for user www-data
Oct  7 16:38:01 ssjiang CRON[1054826]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 16:38:02 ssjiang CRON[1054826]: pam_unix(cron:session): session closed for user www-data
Oct  7 16:39:01 ssjiang CRON[1054836]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 16:39:01 ssjiang CRON[1054837]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 16:39:01 ssjiang CRON[1054836]: pam_unix(cron:session): session closed for user root
Oct  7 16:39:02 ssjiang CRON[1054837]: pam_unix(cron:session): session closed for user www-data
Oct  7 16:40:01 ssjiang CRON[1054919]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 16:40:01 ssjiang CRON[1054921]: pam_unix(cron:session): session opened for user www-data(uid=33) by (uid=0)
Oct  7 16:40:01 ssjiang CRON[1054920]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 16:40:01 ssjiang CRON[1054922]: pam_unix(cron:session): session opened for user root(uid=0) by (uid=0)
Oct  7 16:40:01 ssjiang CRON[1054922]: pam_unix(cron:session): session closed for user root