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Linux Linux tools for study and analysis of biological information
Post date: May 24, 2005, 14:05 Category: Software Views: 63
Tutorial quote: This article wants to show some of the advantages of Perl programming on Unix, for extraction of the biological information of the DNA, RNA and proteine sequences Databases. They can be used in comparative processes or analysis. The Human Genome project and the DNA clonation techniques have accelerated the scientific progress in this area. Daily generated information in this field outgrows often the capability of processing this information from an evolutive viewpoint.

The fast proliferation of the biological information on different genomes (dowry of genes of an organism) is driving bioinformatics as one fundamental discipline for the handling and analysis of these data.
Linux Benchmarking Filesystems
Post date: April 12, 2005, 03:04 Category: Benchmarks Views: 95
Tutorial quote: I recently purchased a Western Digital 250GB/8M/7200RPM drive and wondered which journaling file system I should use. I currently use ext2 on my other, smaller hard drives. Upon reboot or unclean shutdown, e2fsck takes a while on drives only 40 and 60 gigabytes. Therefore I knew using a journaling file system would be my best bet. The question is: which is the best? In order to determine this I used common operations that Linux users may perform on a regular basis instead of using benchmark tools such as Bonnie or Iozone. I wanted a "real life" benchmark analysis. A quick analogy: Just because the Ethernet-Over-Power-Lines may advertise 10mbps (1.25MB/s), in real world tests, peak speed is only 5mbps (625KB/s). This is why I chose to run my own tests versus using hard drive benchmarking tools.
Linux Easy Linux Network Backup
Post date: April 12, 2005, 19:04 Category: Network Views: 42
Tutorial quote: If you use Linux, you already have access to extremely powerful tools for creating custom backup solutions. The solutions in this article can help you perform simple to more advanced and secure network backups using open source tools that are part of nearly every Linux distribution.
Debian Cruising with the snavigator
Post date: May 24, 2005, 14:05 Category: Programming Views: 83
Tutorial quote: This article presents the snavigator, a powerful code analysis, cross-referencing and re-engineering tool which is indispensable for tackling the complexity of maintaining larger pieces of software and packages in an effective manner.
Linux Linux Web Filtering in 7 steps
Post date: April 12, 2005, 14:04 Category: Network Views: 423
Tutorial quote: How to install a transparent Squid proxy server with real-time HTTP virus scanning on Mandrake 10.0 using DansGuardian and ClamAV?

People quickly and easily access volumes of research on the Internet and correspond with a mouse click. For more and more companies, content filtering is part of the large battle to combat all kinds of online threats, including hackers, worms and viruses. Linux content filtering allows administrators to configure and manage Internet access across the entire network and to block unwanted Web content like pornography, shopping Web sites, games and gambling.

This guide contains all the necessary information for installing and understanding the architectural layout of the implementation. It was written with the assumption that you understand how to install programs and have a basic understanding of Linux Mandrake. This includes installing Linux Mandrake and RPM packages, editing files, making directories, compiling software and understanding general UNIX commands. This guide doesn’t explain how to use or configure Squid, DansGuardian and ClamAV but information on where to obtain this information can be found in the “Additional information” section.
RedHat Getting started with RHEL4's built-in LVM tools
Post date: June 3, 2005, 12:06 Category: System Views: 172
Tutorial quote: Many Unix administrators I know (you know who you are), always used to smirk when I talked about Linux. They could always point to the fact that regardless of whatever I could say, they had journaling file systems, which they could manage using various Logical Volume Management (LVM) tools, and I couldn't touch that.

Well, not any more! Not only does Red Hat offer ext3 as their default file system, but they offer great management tools to boot. As we know, ext2 had a great lifespan, but it was not an enterprise-ready file system that could handle large disk partitions, fast recovery from systems crashes, or large amounts of files. Journaling file systems give you the ability to recover almost instantly from a crash, as you do not need to run fsck after a restart. Similar to how databases recover from crashes, a journaling file system tracks changes to file system metadata and pretty much guarantees that either all or no updates have completed. Of course, these file systems also need elaborate tools to help better configure and manage them accordingly.
Linux Performance Tools for Optimizing Linux: Process-Specific CPU
Post date: June 1, 2005, 03:06 Category: Optimizing Views: 140
Tutorial quote: The tools to analyze the performance of applications are varied and have existed in one form or another since the early days of UNIX. It is critical to understand how an application is interacting with the operating system, CPU, and memory system to understand its performance. This chapter will help you understand where the bottleneck in your system is occuring, and how to fix it.
Unix+clones Wikipedia Content on Dict
Post date: December 31, 2005, 14:12 Category: Network Views: 71
Tutorial quote: Dict is a dictionary client program that retrieves information from dictd servers hosted locally or from many free dictd servers on Internet.Though originally designed for online dictionary networks, it can be used to get other information like wildly popular wikipedia servers.
Debian Centralized Syslog Server Using syslog-NG
Post date: April 28, 2006, 11:04 Category: System Views: 8
Tutorial quote: syslog-ng© is the world's most flexible and scalable audit trail processing tool for organizations of any size. It provides a centralised, securely stored log of all devices on your network, whatever platform they run on. And syslog-ng also incorporates a host of powerful features, including filtering based on message content, as well as customisable data mining and analysis capabilities.

Debian Rolling your own Debian packages (part 1)
Post date: January 21, 2006, 01:01 Category: Software Views: 33
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.