Provided by: logstalgia_1.1.0-2build1_amd64 bug


       Logstalgia -  a web server access log visualization tool


       logstalgia [options] logfile


       logstalgia  is  a  visualization  tool that replays or streams web server access logs as a
       retro arcade game simulation.


       logstalgia's display is rendered using OpenGL and requires a 3D accelerated video card  to

       Logstalgia  supports  several  standardized access.log formats used by web servers such as
       Apache and Nginx (see 'SUPPORTED LOG FORMATS' below).

       As logstalgia is designed to playback logs in real time you will need a log from a  fairly
       busy webserver to achieve interesting results (eg 100s of requests each minute).


       -f     Fullscreen.

              Set  the window size. If -f is also supplied, will attempt to set the video mode to
              this also. Add ! to make the window non-resizable.

       --screen SCREEN
              Set the number of the screen to display on.

       --window-position XxY
              Initial window position on your desktop which may be made up of multiple monitors.

              This will override the screen setting so don't specify both.

              Frameless window.

       --title TITLE
              Set a title.

       -b, --background
              Background colour in hex.

       -x  --full-hostnames
              Show full request ip/hostname.

       -s, --simulation-speed
              Simulation speed. Defaults to 1 (1 second-per-second).

       -p, --pitch-speed
              Speed balls travel across the screen (defaults to 0.15).

       -u, --update-rate
              Page Summary update speed. Defaults to 5 (5 seconds).

       -g name,(HOST|URI|CODE)=regex[,SEP=chars][,MAX=n][,ABBR=n],percent[,colour]
              Creates a new named summarizer group for requests for which a  specified  attribute
              (HOST,  URI  or  response  CODE)  matches a regular expression. Percent specifies a
              vertical percentage of screen to use.

              SEP=chars can specify a list of separator characters (e.g.  /)  to  split  on.  The
              default separator is /.

              MAX=n specifies the max depth into the path to be displayed. (e.g. MAX=1 would show
              only root directory names of paths). By default there is 0 (no limit).

              ABBR=n specifies the minimum depth at which to allow partially abbreviated strings.
              The default is 0 (allow). -1 to disallow.

              A colour may optionally be supplied in hexadecimal format (eg FF0000 for red) which
              will be applied to all labels and request balls matched to the group.


               -g "HTML,URI=html?$,30"
               -g "Lan,HOST=^192,30"
               -g "Success,CODE=^[23],30"

              If no groups are specified, the default groups are Images (image files), CSS  (.css
              files) and Scripts (.js files).

              If there is enough space remaining a catch-all group 'Misc' will appear as the last

       --address-separators CHARS
              List of address separator characters. Defaults to '.:'.

       --address-max-depth DEPTH
              Maximum depth to display in address summarizer. 0 for no maximum.

       --address-abbr-depth DEPTH
              Minimum abbreviation depth of address summarizer. 0 to always allow  abbreviations,
              -1 to never abbreviate.

       --path-separators CHARS
              Default list of path separator characters. Defaults to /.

       --path-max-depth DEPTH
              Default maximum path depth shown in the summarizer. 0 for no maximum.

       --path-abbr-depth DEPTH
              Default  minimum  path  abbreviation  depth. 0 to always allow abbreviations, -1 to
              never abbreviate.

       --paddle-mode MODE
              Paddle mode (pid, vhost, single).

              vhost  - separate paddle for each virtual host in the log file.

              pid    - separate paddle for each process id in the log file.

              single - single paddle (the default).

       --paddle-position POSITION
              Paddle position as a fraction of the view width (0.25 - 0.75).

       --display-fields REQUEST_FIELDS
              List of one or more request fields that are shown when the user  hovers  the  mouse
              over an individual request:

                  path          - the path of the resource requested
                  hostname      - hostname or IP address
                  response_size - size of the response in bytes
                  response_code - response code
                  method        - method
                  protocol      - protocol
                  timestamp     - timestamp of request
                  referrer      - referrer URL of the request
                  user_agent    - user agent
                  vhost         - virtual host name
                  log_entry     - full log entry
                  pid           - the pid of the instance that handled the request

              Separate multiple fields with commas (eg 'path,hostname')

       --sync Read from STDIN, ignoring entries before the current time.

       --from, --to 'YYYY-MM-DD hh:mm:ss +tz'
              Show entries from a specific time period.

              If a time zone offset isn't specified the local time zone is used.

              Example accepted formats:

                  "2012-06-30 12:00"
                  "2012-06-30 12:00:00 +12"

       --start-position POSITION
              Begin at some position in the log file (between 0.0 and 1.0).

       --stop-position POSITION
              Stop at some position.

              No bouncing.

              Hide response code.

              Hide paddle.

              Hide paddle tokens shown in multi-paddle modes.

              Hide URL protocol and hostname prefix of requests.

              Disable automatic skipping of empty time periods.

              Disable the progress bar.

              Disable the glow effect.

       --font-size SIZE
              Font size.

              Duration of the glow (between 0.0 and 1.0).

              Adjust the amount of glow.

              Intensity of the glow.

       -o, --output-ppm-stream FILE
              Write frames as PPM to a file ('-' for STDOUT).

       -r, --output-framerate FPS
              Framerate of output (used with --output-ppm-stream).

       --load-config CONFIG_FILE
              Load a config file.

       --save-config CONFIG_FILE
              Save a config file with the current options.

              Automatically reload config file when it is modified.

              The  path  to  the access log file to read or '-' if you wish to supply log entries
              via STDIN.


       Watch an example access.log using the default settings:

          logstalgia /usr/share/logstalgia/example.log

       Watch the live access.log, starting from the most recent  batch  of  entries  in  the  log
       (requires  tail).  Note than '-' at the end is required for logstalgia to know it needs to
       read from STDIN:

          tail -f /var/log/apache2/access.log | logstalgia -

       To follow the log in real time, use the --sync option. This will start  reading  from  the
       next entry received on STDIN:

          tail -f /var/log/apache2/access.log | logstalgia --sync

       Watch a remote access.log via ssh:

          ssh tail -f /var/log/apache2/access.log | logstalgia --sync


       Logstalgia supports the following standardized log formats used by web servers like Apache
       and Nginx:

          NCSA Common Log Format (CLF)
              "%h %l %u %t \"%r\" %>s %b"

          NCSA Common Log Format with Virtual Host
              "%v %h %l %u %t \"%r\" %>s %b"

          NCSA extended/combined log format
              "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-agent}i\""

          NCSA extended/combined log format with Virtual Host
              "%v %h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-agent}i\""

       The process id (%P), or some other identifier, may be included as an additional  field  at
       the  end  of  the entry. This can be used with '--paddle-mode pid' where a separate paddle
       will be created for each unique value in this field.


       Logstalgia now supports a pipe ('|') delimited custom log file format:

          timestamp       - unix timestamp of the request date.
          hostname        - hostname of the request
          path            - path requested
          response_code   - the response code from the webserver (eg 200)
          response_size   - the size of the response in bytes

       The following are optional:

          success         - 1 or 0 to indicate if successful
          response_colour - response colour in hexidecial (#FFFFFF) format
          referrer url    - the referrer url
          user agent      - the user agent
          virtual host    - the virtual host (to use with --paddle-mode vhost)
          pid             - process id or some other identifier (--paddle-mode pid)

       If  success  or  response_colour  are  not  provided,  they  will  be  derived  from   the
       response_code using the normal HTTP conventions (code < 400 = success).


       See the guide on the homepage for examples of recording videos with Logstalgia:


       The  time  shown  in  the top left of the screen is set initially from the first log entry
       read and is incremented according to the simulation speed (-s).

       The counter in the bottom right hand corner shows the number of requests  displayed  since
       the start of the current session.

       Pressing space at any time will pause/unpause the simulation. While paused you may use the
       mouse to inspect the detail of individual requests.

       You can click on summarizer group entries on the left and right  side  of  the  screen  to
       filter  to  requests  matching  that  entry. Click on the filter description to remove the

       Interactive keyboard commands:

          (q) Debug Information
          (c) Displays Logstalgia logo
          (n) Jump forward in time to next log entry.
          (+-) Adjust simulation speed.
          (<>) Adjust pitch speed.
          (F5) Reload config
          (F11) Window frame toggle
          (F12) Screenshot
          (Alt+Enter) Fullscreen toggle
          (Ctrl+S) Save config
          (Home/End)          Adjust address summarizer maximum depth
          (Page Up/Down)      Adjust group summarizer maximum depth
          (Ctrl+Home/End)     Adjust address summarizer abbreviation depth
          (Ctrl+Page Up/Down) Adjust group summarizer abbreviation depth
          (ESC) Quit


        Written by Andrew Caudwell

        Project Homepage:


        Copyright (C) 2008 Andrew Caudwell (

        This program is free software; you can redistribute it and/or
        modify it under the terms of the GNU General Public License
        as published by the Free Software Foundation; either version
        3 of the License, or (at your option) any later version.

        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with this program.  If not, see <>.


        Catalyst IT (

        For supporting the development and promotion of Logstalgia!