Filters

The following sections describe how to select and filter log messages.

• Using filters describes how to configure and use filters.

• Combining filters with boolean operators shows how to create complex filters using boolean operators.

• Comparing macro values in filters explains how to evaluate macros in filters.

• Using wildcards, special characters, and regular expressions in filters provides tips on using regular expressions.

• Tagging messages explains how to tag messages and how to filter on the tags.

• Filter functions is a detailed description of the filter functions available in syslog-ng OSE.