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Rolling your own Debian packages (part 1)

Post date: January 21, 2006, 06:01 Category: Software Views: 3350 Comments
Tutorial quote: This two-part article explains how to make a Debian package of simple piece of software, presumably something you have written yourself. Although building a new package is more complex than rebuilding one or having one generated, the idea is that it is actually surprisingly simple to create basic Debian packages. In fact, if you can make software install into a temporary installation tree, you're already 90% done! This text provides a quick alternative to the more comprehensive Debian New Maintainers' Guide. Only knowledge of Makefiles and the basic Debian package tools is assumed.

The first part of this article will continue with some preliminary information about Debian packages. In the second part we walk through a concrete packaging example.

Two-in-one DNS server with BIND9

Post date: April 1, 2006, 05:04 Category: Software Views: 4628 Comments
Tutorial quote: This tutorial shows you how to configure BIND9 DNS server to serve an internal network and an external network at the same time with different set of information. To accomplish that goal, a new feature of BIND9 called view is used. As a tutorial it'll walk you through the whole set up, but initial knowledge of BIND and DNS is required, there are plenty of documents that cover that information on the Internet.

Tracking TCP Connections With tcptrack

Post date: July 30, 2007, 23:07 Category: Network Views: 4364 Comments
Tutorial quote: Basically, tcptrack is a sniffer which will show the information about TCP connections on a specific interface. tcptrack will watch all the connections that occur and show the information in a nice interface.

Install GLPI (IT and asset Managemet Software) from Ubuntu Repositories

Post date: February 10, 2009, 07:02 Category: Software Views: 5476 Comments
Tutorial quote: GLPI stands for “Gestionnaire libre de parc informatique”, GLPI is the Information Resource Manager with an additional Administration- Interface. You can use it to build up a database with an inventory for your company (computer, software, printers…). It has enhanced functions to make the daily life for the administrators easier, like a job tracking system with mail-notification and methods to build a database with basic information about your network-topology.

Creating Really Teensy ELF Executables for Linux

Post date: April 12, 2005, 18:04 Category: Miscellaneous Views: 3288 Comments
Tutorial quote: If you're a programmer who's become fed up with software bloat, then may you find herein the perfect antidote.

This document explores methods for squeezing excess bytes out of simple programs. (Of course, the more practical purpose of this document is to describe a few of the inner workings of the ELF file format and the Linux operating system. But hopefully you can also learn something about how to make really teensy ELF executables in the process.)

Please note that the information and examples given here are, for the most part, specific to ELF executables on a Linux platform running under an Intel-386 architecture. I imagine that a good bit of the information is applicable to other ELF-based Unices, but my experiences with such are too limited for me to say with certainty.

The assembly code that appears in this document is written for use with Nasm. (Besides being more appropriate for our needs, Nasm's syntax beats the hell out of AT&T syntax for anyone who learned x86 assembly language before learning to use Gas.) Nasm is freely available and extremely portable; see http://nasm.sourceforge.net/.

Please also note that if you aren't a little bit familiar with assembly code, you may find parts of this document sort of hard to follow.

Burning or Writing DVDs Under Debian

Post date: May 18, 2006, 20:05 Category: Software Views: 2925 Comments
Tutorial quote: If you want to burn DVD's in debian you need to install the "dvd+rw-tools" package.

dvd+rw-tools makes it possible to burn DVD images created by dvdauthor or mkisofs to DVD+R, DVD+RW, DVD-R, and DVD-RW disks, replacing cdrecord-proDVD in many cases.

Sawing Linux Logs with Simple Tools

Post date: April 14, 2005, 12:04 Category: Security Views: 3297 Comments
Tutorial quote: So there you are with all of your Linux servers humming along happily. You have tested, tweaked, and configured until they are performing at their peak of perfection. Users are hardly whining at all. Life is good. You may relax and indulge in some nice, relaxing rounds of TuxKart. After all, you earned it.

Except for one little remaining chore: monitoring your log files. [insert horrible alarming music of your choice here.] You're conscientious, so you know you can't just ignore the logs until there's a problem, especially for public services like Web and mail. Somewhere up in the pointy-haired suites, they may even be plotting to require you to track and analyze all sorts of server statistics.

Not to worry, for there are many ways to implement data reduction, which is what log parsing is all about. You want to slice and dice your logs to present only the data you're interested in viewing. Unless you wish to devote your entire life to manually analyzing log files. Even if you only pay attention to logfiles when you're debugging a problem, having some tools to weed out the noise is helpful.

Tomboy - Desktop Note Taking in openSUSE Linux

Post date: August 31, 2008, 18:08 Category: Desktop Views: 3852 Comments
Tutorial quote: Tomboy is a desktop note-taking application for Linux and Unix. Simple and easy to use, but with potential to help you organize the ideas and information you deal with every day. Tomboy is written in C# and utilizes the Mono runtime and Gtk#. Automatic spell-checking is provided by GtkSpell.

Nessus Vulnerability Scanner in openSUSE

Post date: August 23, 2008, 22:08 Category: Security Views: 3960 Comments
Tutorial quote: The Nessus vulnerability scanner, is the world-leader in active scanners, featuring high speed discovery, configuration auditing, asset profiling, sensitive data discovery and vulnerability analysis of your security posture. Nessus scanners can be distributed throughout an entire enterprise, inside DMZs, and across physically separate networks. Nessus can also be used for ad-hoc scanning, daily scans, and quick-response audits.

nBox - Envision your network with nBox (Embedded Ntop)

Post date: May 28, 2007, 22:05 Category: Network Views: 4165 Comments
Tutorial quote: The life of a systems or network administrator requires us to maintain an expansive understanding of our network infrastructure to more effectively manage it. Amidst volumes of complex data that some IT problems present and network management is no exception to these complications. Visual tools allow us to better see trends and make sense of the macro view of our networks. Ntop, nBox, nProbe are just the right FOSS tools that can help us gain greater insight.
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