Ubuntu12.04 no/var/log/messages Solution

Ubuntu12.04 no/var/log/messages solution. This file cannot be found due to an error. It is very strange, because it is introduced on the Internet that Baidu can view this file and found that some versions do not exist, however, for ubuntu, You can edit/etc/rsyslog. d/50-default.conf contains such a section *. = info ;*. = notice ;*. = warn; \ auth, authpriv. none; \ cron, daemon. none; \ mail, news. none-/var/log/messages: this is already in use, but it is commented out. Now, just save the comments and restart the service: sudo restart rsyslog # This is introduced on the Internet. I didn't see it at first. I restarted the server directly.