www.LinuxHowtos.org





DQTOOL

Section: The dqtool tool manual page (1)
Updated: 07/16/2025
Index Return to Main Contents
 

NAME

dqtool - Display the contents of a disk-buffer file created with  

SYNOPSIS

dqtool [command] [options]
 

DESCRIPTION

NOTE: The dqtool application is distributed with the system logging application, and is usually part of the syslog-ng package. The latest version of the syslog-ng application is available at the m[blue]official syslog-ng websitem[][1].

This manual page is only an abstract, for the complete documentation of syslog-ng, see m[blue]The Administrator Guidem[][2].

The dqtool application is a utility that can be used to display and format the messages stored in a disk-buffer file.  

THE CAT COMMAND

cat [options] [file]

Use the cat command to display the log messages stored in the disk-buffer (also called disk-queue) file, and also information from the header of the disk queue file. The messages are printed to the standard output (stdout), so it is possible to use grep and other tools to find particular log messages, e.g., dqtool cat /var/log/messages.lgs |grep 192.168.1.1.

The cat command has the following options:

--debug or -d

Print diagnostic and debugging messages to stderr.

--help or -h

Display a brief help message.

--template=<template> or -t

Format the messages using the specified template.

--verbose or -v

Print verbose messages to stderr.

--version or -V

Display version information.

Example: 

./dqtool cat ../var/syslog-ng-00000.qf

The output looks like: 

Disk-buffer state loaded; filename='../var/syslog-ng-00000.qf', qout_length='65', qbacklog_length='0', qoverflow_length='9205', qdisk_length='0'
Mar  3 10:52:05 tristram localprg[1234]: seq: 0000011630, runid: 1267609923, stamp: 2010-03-03T10:52:05 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD
Mar  3 10:52:05 tristram localprg[1234]: seq: 0000011631, runid: 1267609923, stamp: 2010-03-03T10:52:05 PADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADDPADD
 

FILES

/usr/local/bin/dqtool  

SEE ALSO

syslog-ng.conf(5)

syslog-ng(8)


Note

For the detailed documentation of see m[blue]The 4.9 Administrator Guidem[][2]

If you experience any problems or need help with syslog-ng, visit the m[blue]syslog-ng mailing listm[][3].

For news and notifications about of syslog-ng, visit the m[blue]syslog-ng blogsm[][4].

 

AUTHOR

This manual page was written by the Balabit Documentation Team <documentation@balabit.com>.  

COPYRIGHT

 

NOTES

1.
official syslo-ng website
https://www.balabit.com/lo-management
2.
The Administrator Guide
https://www.syslo-ng.com/technica-documents/doc/syslo-n-ope-sourc-edition/3.37/administratio-guide
3.
syslo-ng mailing list
https://lists.balabit.hu/mailman/listinfo/syslo-ng
4.
syslo-ng blogs
https://syslo-ng.org/blogs/

 

Index

NAME
SYNOPSIS
DESCRIPTION
THE CAT COMMAND
FILES
SEE ALSO
AUTHOR
COPYRIGHT
NOTES