Man page - lnav(1)

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Package:  lnav
apt-get install lnav

Manuals in package:
• lnav(1)
Documentations in package:
• lnav

Manual

LNAV

NAME
SYNOPSIS
DESCRIPTION
KEY BINDINGS
OPTIONS
Optional arguments:
MANAGEMENT-MODE OPTIONS
EXAMPLES
AUTHOR

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NAME

lnav - log file viewer for the terminal

SYNOPSIS

lnav [options] [logfile1 logfile2 ...]

DESCRIPTION

The Logfile Navigator, lnav, is a log file viewer for the terminal. Given a set of files/directories, lnav will:
- decompress as needed;
- detect their format;
- merge the files together by time into a single view;
- tail the files, follow renames, find new files in directories;
- build an index of errors and warnings;
- pretty-print JSON-lines.

KEY BINDINGS

	?		View/leave the online help text.
	q		Quit the program.

OPTIONS

	-h		Print help and exit
	-H		Display the internal help text.

-I path

Add the given configuration directory to the search path.

	-W		Print warnings related to lnav’s configuration.
	-u		Update formats installed from git repositories.

-d file

Write debug messages to the given file.

	-V		Print version information.
	-r		Recursively load files from the given directories.
	-R		Load older rotated log files as well.
	-c cmd		Execute a command after the files have been loaded.

-f path

Execute the commands in the given file.

	-e cmd		Execute a shell command-line.
	-t		Prepend timestamps to the lines of data being read in on the standard input.
	-n		Run without the curses UI. (headless mode)
	-N		Do not open the default syslog file if no files are given.
	-q		Quiet mode. Do not print the log messages after executing all of the commands.

Optional arguments:

logfile1

The log files or directories to view. If a directory is given, all of the files in the directory will be loaded.

MANAGEMENT-MODE OPTIONS

	-i		Install the given format files in the $HOME/.lnav/formats/installed directory and exit.
	-m		Switch to the management command-line mode. This mode is used to work with lnav’s configuration.
	-C		Check the configuration and exit. The log format files will be loaded and checked. Any files given on the command-line will be loaded checked to make sure they match a log format.

EXAMPLES

To load and follow the syslog file:

lnav

To load all of the files in /var/log:

lnav /var/log

To watch the output of make with timestamps prepended:

make 2>&1 | lnav -t

AUTHOR

This manual page was written by Salvatore Bonaccorso <carnil@debian.org> for the Debian system (but may be used by others).

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