O arquivo de log real será assim
$ cat file1.log
time=2014-07-23 23:56:28 GMT, user=[unknown], db=[unknown], host= pid=28254 LOG:
time=2014-07-23 23:56:28 GMT, user=portalman, db=ss, host=172.18.183.45 pid=28254 LOG: connection authorized:...
24.07.2014 / 13:49