The #Log File Navigator
▻http://lnav.org
An advanced log file viewer for the small-scale
– Automatic Log Format Detection
– Display only lines that match or do not match a set of regular expressions. Useful for removing extraneous log lines that you are not interested in.
– Log files are directly used as the backing for SQLite virtual tables. This means you can perform #queries on messages without having to load the data into an SQL database. For example, the screenshot above shows the result of running the following query against an #Apache access_log file
– Errors and warnings are colored in red and yellow, respectively. Highlights are also applied to: SQL keywords, XML tags, file and line numbers in Java backtraces, and quoted strings.