Read syslog buffer

Used by openwrt and onion omega

-l count Get only the last 'count' messages
-e pattern Filter messages with a regexp
-r server port> Stream message to a server
-F file Log file
-S bytes Log size
-p file PID file
-h hostname Add hostname to the message
-P prefix Prefix custom text to streamed messages
-f Follow log messages
-u Use UDP as the protocol
-t Add an extra timestamp
-0 Use \0 instead of \n as trailer when using TCP