lnav

lnav is a ncurses-based tool for viewing and analyzing log files. The value added by lnav over text viewers / editors is that it takes advantage of any semantic information that can be gleaned from the log file, such as timestamps and log levels.

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. It is hoped that these features will allow the user to quickly and efficiently zero-in on problems.

What is new in this release:

• Custom log formats and more builtin formats are now supported.
• Data can be automatically extracted from log messages.
• This release some UI improvements and support for 256-color terminals.

What is new in version 0.5.0:

• Files can now be specified on the commandline using wildcards so new files are automatically loaded.
• Directories can also be passed as commandline arguments to read all of the files in the directory.
• This release adds a "C" hotkey to clear any existing user bookmarks and experimental support for accepting input from mice.

What is new in version 0.4.0:

• Support for bzip2 compressed files was added.
• Text files that are not recognized as logs are broken out into a separate view.
• A "session" file and command have been added so that you can run lnav commands on startup.

Requirements:

• Ncurses