Logfile Navigator

A log file viewer for the terminal. Merge, tail, filter, and query logs with ease.

GitHub:

[Logfile Navigator @lnavapp]

@WriteAheadLog If you're in a terminal and want to look at log files, try lnav (https://t.co/2MEH7Jd7Ab). I wrote it to try and do better than tail/grep and ended up using it everyday when working at my regular job for years and years.

[Logfile Navigator @lnavapp]

@saik0s Credit to Charm_'s Wish for the idea of using SSH for a demo/tutorial: https://t.co/x3zrHCAQRU

[Logfile Navigator @lnavapp]

lnav v0.12.4-rc1 is available for testing. This release was mainly focused on improving performance and rounding out sharp corners.

https://t.co/QPuKXyaCi8

[Logfile Navigator @lnavapp]

Many thanks to @WMACCESS for sponsoring lnav and other open source projects! https://t.co/LpD3Vup6ZB

[Logfile Navigator @lnavapp]

lnav v0.12.3 has been released

https://t.co/DgsDspQnAx

The main new feature is handling files that have a mix of log messages from multiple sources (demultiplexing). There are also plenty of minor improvements.

[Logfile Navigator @lnavapp]

lnav v0.12.2 has been released with the main new feature being mouse support:
https://t.co/AXnHb5hhce

[Logfile Navigator @lnavapp]

lnav v0.12.1 has been released: https://t.co/Ar96xcp287

The main highlight is support for the PRQL database query language. Doing log analysis should be a little easier with PRQL since lnav can provide previews of the pipeline stages as shown in this screenshot:

[Logfile Navigator @lnavapp]

lnav v0.12.0 has been released: https://t.co/lxRY6n1yQp

Highlights: support for executing commands and capturing their output, which allows custom URL schemes; timezones in timestamps are recognized and converted to local time; a GANTT chart view of operations found in logs

[Logfile Navigator @lnavapp]

@saltygeoffrey @luke_milby @orhunp_ It’s written in C++, but I played around with a rewrite in rust. I wish I had more time to work on it.

[Logfile Navigator @lnavapp]

@willmcgugan I feel the need to point out that many of the requested features have already been implemented in https://t.co/2MEH7Jd7Ab (align files by timestamp, auto-detect log format, log parsing configured using a regex, scrolling is paused when moving around and resumed when at bottom)

[Logfile Navigator @lnavapp]

@willmcgugan @RomainBrenaget Using mmap() with log files can be problematic because they can be truncated / overwritten, which will cause all sorts of problems. There's not necessarily a huge performance win anyhow.

[Logfile Navigator @lnavapp]

@BassemDy @simonw There are changes on the ToT to try and address this -- https://t.co/THv7udnUAg . Maybe try one of the nightly binaries attached to this build to see if it works better -- https://t.co/dprDWY6HH0 . (Note that the `-t` option has been removed...)

[Logfile Navigator @lnavapp]

lnav v0.11.2 is now released: https://t.co/FUrqqaS4H5

[Logfile Navigator @lnavapp]

lnav v0.11.2-rc3 is ready for testing, give the new "cursor mode" a try -- https://t.co/awvcI3aGS7

[Logfile Navigator @lnavapp]

lnav v0.11.1 has been released here -- https://t.co/pb2eI23YrF
-- The main change is migrating from pcre to pcre2

[Logfile Navigator @lnavapp]

lnav is a Google Open Source Peer Bonus winner, thanks!
https://t.co/2ksvfVYLrj

[Logfile Navigator @lnavapp]

lnav v0.11.0 has been released with a bunch of new features and fixes, you can find out more here at https://t.co/9uDbyds6m1

[Logfile Navigator @lnavapp]

lnav now has an ssh-based playground and tutorial. Read the blog post at https://t.co/tpUrBO9qOB
Thanks to @flydotio for providing a free-tier for stuff like this.

[Logfile Navigator @lnavapp]

The first beta of lnav v0.11.0 is available here - https://t.co/7ineS1tuW7
There have been quite a few additions, like a breadcrumb bar, integration with regex101, and markdown support. See https://t.co/5mV6V32eEs for more details

[Logfile Navigator @lnavapp]

@lichuang What do you find lacking?