Chapter 11. Manipulating messages
This chapter explains the methods that you can use to customize, reformat, and modify log messages using syslog-ng Open Source Edition.
Section 11.1, Customizing message format using macros and templates explains how to use templates and macros to change the format of log messages, or the names of logfiles and database tables.
Section 11.2, Modifying messages using rewrite rules describes how to use rewrite rules to search and replace certain parts of the message content.
Section 11.3, Regular expressions lists the different types of regular expressions that can be used in various syslog-ng OSE objects like filters and rewrite rules.