Syslog : The Complete System Administrator Guide

f you are a system administrator, or just a regular Linux user, there is a very high chance that you worked with Syslog, at least one time.

On your Linux system, pretty much everything related to system logging is linked to the Syslog protocol.

Designed in the early 80’s by Eric Allman (from Berkeley University), the syslog protocol is a specification that defines a standard for message logging on any system.