NAME

       lnav - ncurses-based log file viewer

SYNOPSIS

       lnav [-hVsar] [logfile1 logfile2 ...]

DESCRIPTION

       The  log  file  navigator,  lnav,  is  an  enhanced  log file viewer that takes advantage of any semantic
       information that can be gleaned from the files being viewed, 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.

KEY BINDINGS

       ?      View/leave the online help text.

       q      Quit the program.

OPTIONS

       -h     Print help and exit

       -H     Display the internal help text.

       -n     Run without the curses UI.  (headless mode)

       -c cmd Execute a command after the files have been loaded.

       -f path
              Execute the commands in the given file.

       -I path
              Add the given configuration directory to the search path.

       -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.

       -i     Install the given format files in the $HOME/.lnav/formats/installed directory and exit.

       -u     Update formats installed from git repositories.

       -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.

       -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.

       -t     Prepend timestamps to the lines of data being read in on the standard input.

       -w file
              Write the contents of the standard input to this file.

   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.

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).

                                                   August 2022                                           LNAV(1)