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LOGSWAN(1)		    General Commands Manual		    LOGSWAN(1)

NAME
       logswan -- fast Web log analyzer	using probabilistic data structures

SYNOPSIS
       logswan [-ghv] [-d db] logfile

DESCRIPTION
       logswan is a fast Web log analyzer using	probabilistic data structures.
       It  is  targeted	 at very large log files, typically APIs logs.	It has
       constant	memory usage regardless	of the log file	size,  and  takes  ap-
       proximatively 4MB of RAM.

       Unique  visitors	 counting  is performed	using two HyperLogLog counters
       (one for	IPv4, and another one for IPv6), providing a relative accuracy
       of 0.10%.

       If file is a single dash	(`-'), logswan reads from the standard input.

       The options are as follows:

       -d db   Specify path to a GeoIP database.

       -g      Enable GeoIP lookups.

       -h      Display usage.

       -v      Display version.

EXAMPLES
       The following script can	be used	to process all log files in  the  cur-
       rent directory and save the output in a file:

	     #!/bin/sh
	     for file in $(ls *.log)
	     do
		     logswan $file > $file.json
	     done
	     exit 0

AUTHORS
       logswan was written by Frederic Cambus.

FreeBSD	ports 15.quarterly	March 13, 2023			    LOGSWAN(1)

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