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Linux

Creating DjVu Documents Linux HOWTO

Post date: July 16, 2006, 16:07 Category: Miscellaneous Views: 4724 Comments
Tutorial quote: This document explains some of the uses of djvulibre implementation of DjVu for creating quality DjVu documents in linux. DjVu format features bitmap document compression and hypertext structure. It is used by numerous web sites all around the world for storing and distributing digital documents including scanned documents and high-resolution pictures. One of the advantages of DjVu files is that they are notably small, often smaller than PDF or JPEG files with the same content. This makes DjVu a helpful tool for digitizing books and journals, especially scientific ones.

Below it is considered the case when a DjVu document is created from a number of separate JPEG files each containing a single page. Here JPEG format is not a limitation, and the examples can cover arbitrary image formats. Conversion from PDF to DjVu is also discussed. Usage of scanner software is not explained: refer to the relevant documentation.
Linux

Sawing Linux Logs with Simple Tools

Post date: April 14, 2005, 12:04 Category: Security Views: 3507 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.
Linux

Roll Your Own Firewall

Post date: March 28, 2006, 21:03 Category: Network Views: 3837 Comments
Tutorial quote: A comprehensive user friendly guide to setting up your own firewall on GNU/Linux.
Unix+clones

Fileschanged

Post date: September 25, 2007, 18:09 Category: Software Views: 4166 Comments
Tutorial quote: Fileschanged is a GNU/Linux command-line utility that reports when files have been altered.
Linux

Today's Linux screen capture technology

Post date: April 12, 2005, 18:04 Category: Miscellaneous Views: 3262 Comments
Tutorial quote: "I'd like you to help me find out about video screen captures," said one of my editors a while back. "Sure, let me see what's available," I replied. He pointed me to a couple of Web sites to get me started, and here I am a few weeks later ready to share my findings. I'll discuss ways that you can make video clips in Linux, talk about their applications and shortcomings. I'll also cover suitable ways to view your masterpieces once they're recorded.

Video screen captures are useful for jobs like application training, computer instruction, or product demos. An example would be the little one-minute video I set up for my wife. She kept forgetting how to start up Mozilla Mail on her Windows 98 machine. I captured the mouse clicks and screen changes (in real time) as I ran through the process, saving it to a Macromedia Flash file. I then created a little Web page on one of my Apache servers, that described how to start Mozilla Mail and included a link to the Flash file. Instead of asking me how to do it, she can now just click on the video tutorial.
Ubuntu

Setting up an Ubuntu media server

Post date: April 23, 2008, 12:04 Category: Installing Views: 15462 Comments
Tutorial quote: In today's tip I'm going to run through how to setup an Ubuntu media server. First of all, what is Ubuntu. Wikipedia says:

Ubuntu is a Linux distribution for desktops, laptops, and servers. It has consistently been rated among the most popular of the many GNU/Linux distributions. Ubuntu's goals include providing an up-to-date yet stable operating system for the average user and having a strong focus on usability and ease of installation.

It is very much like apache, which I showed you how to setup in my article on how to make your computer into a local server, in that it is commonly used as a server software. Now then, what is a media server?

To refer to Wikipedia again, a media server is

A media server is a computer appliance, ranging from an enterprise class machine providing video on demand, to, more commonly, a small home computer storing various digital media.

Basically, it's just like a local server which stores and shares solely media instead of other types of files. I'll leave the uses of one to your imagination. Let's on with setting it up.
Ubuntu

Installing and configuring FireHOL - Part I

Post date: September 20, 2006, 22:09 Category: Network Views: 8193 Comments
Tutorial quote: This tutorial guides user on how to install and configure FireHOL, a Linux-based firewall.
Linux

How Linux boots: Runlevels and init

Post date: April 12, 2005, 23:04 Category: System Views: 3482 Comments
Tutorial quote: Identifying each stage of the boot process is invaluable in fixing boot problems and understanding the system as a whole.
Debian

Automatix2 Setup in Debian Etch

Post date: May 7, 2007, 06:05 Category: Installing Views: 3671 Comments
Tutorial quote: Automatix is a graphical interface for automating the installation of the most commonly requested applications in Debian based Linux operating systems.
OpenSUSE

Setup and Configure openSUSE 11.0

Post date: August 18, 2008, 06:08 Category: Installing Views: 5089 Comments
Tutorial quote: openSUSE 11.0 is the best Linux distribution out there. However, there are some rough edges and if you want to get up and running with openSUSE 11.0 then there are likely a few customizations you’ll want to make.
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