![]() ![]() Automatic data extraction: built-in log message parser can automatically discover and extract interesting data from plainly formatted log messages. ![]() Query logs using SQL: log files are directly used as the backing for SQLite virtual tables.The number of warnings and errors are highlighted in the display so that you can easily see where problems have occurred. Timeline view: shows a histogram of messages over time.Filters: display only lines that match or do not match a set of regular expressions.It also detects gzip/bzi2 files and decompress them automatically on the fly. Automatic format detection for several common log files.No need to manually correlate timestamps across multiple windows or figure out the order in which to view rotated log files. Single log view: all log file contents are merged into a single view based on message timestamps.In this article we will show you how to install and use The Log File Navigator, lnav, on Ubuntu 15.04/15.10/ and CentOS 7.x lnav – Features It is hoped that these features will allow the user to quickly and efficiently zero in on problems. Using this extra semantic information, lnav can do things like interleaving messages from different files, generate histograms of messages over time, and providing hotkeys for navigating through the file. The Log File Navigator, lnav, is an enhanced log file viewer that takes advantage of any semantic information that can be gleaned from the files being viewed, such as t imestamps and log levels. ![]()
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