LumberJack

Download Binary

What is it?

A command-line interface log viewer

Why did I build it

I got really sick of trying to find the things I was looking for in a big blob of unstructured text. Printing my logs out to the terminal just wasn't sufficient anymore.

What's it do?

Well, first and foremost it show your logs...

It can also:

• Stream logs into the viewer as they occur
• Filter to only show lines matching a given search term or regular expression
• Perform a search (from the latest logs upwards of course)
• Display logs from multiple servers side by side
• Display multiple views into the same log file
• Highlight text matching a given regular expression

Install

Binary

The simplest method is to download a binary for your platform here: Download Binary

Homebrew

brew update
brew install chrispenner/tools/lumberjack

Source

Or you can install from source:

Assuming go is installed:

$ go get github.com/chrispenner/lumberjack
$ $GOPATH/bin/lumberjack logs1 logs2

Put $GOPATH/bin on your $PATH to use the lumberjack command.

Keybindings

Log view:

• <enter>: Select a log-file for the current pane
• <tab>: Toggle the filters/highlighters side-pane
• ? or /: Start a search
• w: Toggle text-wrapping
• ^h and ^l: Switch panes left and right respectively
• <up> and <down>: Scroll 1 line at a time
• b or ^u: Scroll up half a screen
• ^d: Scroll down half a screen
• G: Scroll to bottom (latest) logs
• n: Find next occurrance
• N: Find previous occurrance
• 1-4: Display 1-4 panes respectively
• <shift> + 0-9: Toggle the respective filter/highlighter

Filter/Highlighter pane:

• <tab>: Toggle the filters/highlighters side-pane
• <enter>: Edit the current modifier
• <space>: Toggle the current modifier
• j: Move down one modifier
• k: Move up one modifier