Hi Guys, I am working to understand the task of developing syslog-ng as a command line tool (GSoC2015) and I am trying to figure what "possible outputs" the command line tool will take. As per my understanding the input & outputs to syslog are defined as Sources & Destinations (which are places where applications output their logs from respectively).

I have read the documentation about sources & destinations [Table 6.2 ](http://www.balabit.com/sites/default/files/documents/syslog-ng-ose-3.6-guides/en/syslog-ng-ose-guide-admin/html-single/index.html#chapter-sources) and my understanding is that syslog has following 3 types of sources: files, streams on tcp/ip sockets and stdout from a program.

and 3 types of destinations: files or remote hosts (TCP/IP socket) and applications (mentioned in section 7).

So are these all possible types of inputs/outputs that syslog-ng can have? which have to be supported by the command line tool. Or am I missing some points?