NAME

       vnl-tail - tail a log file, preserving the legend

SYNOPSIS

        $ read_temperature | tee temp.vnl
        # temperature
        29.5
        30.4
        28.3
        22.1
        ... continually produces data

        ... at the same time, in another terminal
        $ vnl-tail -f temp.vnl
        # temperature
        28.3
        22.1
        ... outputs data as it comes in

DESCRIPTION

         Usage: vnl-tail [options] logfile logfile logfile ... < logfile

       This tool runs "tail" on given vnlog files in various ways. "vnl-tail" is a wrapper around the GNU
       coreutils "tail" tool. Since this is a wrapper, most commandline options and behaviors of the "tail" tool
       are present; consult the tail(1) manpage for detail. The differences from GNU coreutils "tail" are

       •   The input and output to this tool are vnlog files, complete with a legend

       •   "-c" is not supported because vnlog really doesn't want to break up lines

       •   "--zero-terminated" is not supported because vnlog assumes newline-separated records

       •   By default we call the "tail" tool to do the actual work. If the underlying tool has a different name
           or lives in an odd path, this can be specified by passing "--vnl-tool TOOL"

       Past that, everything "tail" does is supported, so see that man page for detailed documentation.

COMPATIBILITY

       I  use  GNU/Linux-based systems exclusively, but everything has been tested functional on FreeBSD and OSX
       in addition to Debian, Ubuntu and CentOS. I can imagine there's something I missed when testing  on  non-
       Linux systems, so please let me know if you find any issues.

SEE ALSO

       tail(1)

REPOSITORY

       https://github.com/dkogan/vnlog/

AUTHOR

       Dima Kogan "<dima@secretsauce.net>"

LICENSE AND COPYRIGHT

       Copyright 2018 Dima Kogan "<dima@secretsauce.net>"

       This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser
       General  Public  License as published by the Free Software Foundation; either version 2.1 of the License,
       or (at your option) any later version.

                                                   2024-04-01                                        VNL-TAIL(1)