lnav
The Logfile Navigator, lnav for short, is a curses-based tool for viewing and analyzing log files. The value added by lnav over text viewers or 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 provide hotkeys for navigating through the file. These features are meant to allow the user to quickly and efficiently focus on problems.
| Tags | Systems Administration Database Logging Log Analysis Site Management |
|---|---|
| Licenses | BSD Revised |
| Operating Systems | Unix Mac OS 10.7 |
| Implementation | C++ |
Recent releases
- 25 Apr 2013 01:22
Release Notes: 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.
- 21 Jul 2011 05:10
Release Notes: 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.
- 26 Apr 2010 09:01
Release Notes: You can now switch between the SQL result view and the log view while keeping the top of the views in sync with the "line_number" column. The "line_number" column is no longer included in the SQL result view's stacked bar graph. A "warnings" count was added to the histogram view.
- 24 Feb 2010 12:19
Release Notes: Some build issues and a variety of bugs were fixed. The "<" and ">" keys can now be used for doing searching to the left and right. Readline history is kept for searches and commands.
- 17 Jan 2010 08:02
Release Notes: This is the initial version.
Recent comments
Hmm, I'm not sure what the permission issue might be... If you can come up with some steps to reproduce it, you can open an 'Issue' on the lnav github page and I can take a closer look at the problem. Thanks!
A good companion to glogg. Only problem is with permissions. Even if you run as root, the file browser is denied permission to open files in the log folder.
My /var/log/mylogs permissions are: drwxr--xr--x and the files: -rw-r-----
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