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Unix+clones

Streaming music with SlimServer

Post date: June 15, 2005, 16:06 Category: Network Views: 3373 Comments
Tutorial quote: Converting your CD collection into MP3 or another digital file format gives you the ability to enjoy the music on your computer and stream it all over the house and the Internet. To do the latter, however, you have to install and configure a streaming server on your computer. That might sound like a daunting task, but there is a streaming server application that makes the whole process pretty painless. SlimServer from Slim Devices is a cross-platform streaming server that runs on Windows, Linux, and Mac OS X and supports a wide range of formats, including AAC, AIFF, FLAC, Ogg Vorbis, MP3, WAV, and WMA. Although it was developed to stream music files to Slim Devices' Squeezebox2 hardware player, it works perfectly with any software MP3 player capable of working with network streams.
Unix+clones

Classic AmigaOS Emulation - A Guide for WinUAE

Post date: June 12, 2005, 23:06 Category: Emulation Views: 3611 Comments
Tutorial quote: WinUAE has reached a "v1.0 public"-state (!) and includes many improvements including OpenGL/DirectX display filters (for enhancing graphic output), Catweasel support (hardware for reading classic Amiga formatted diskettes with today's diskdrives) and an overall more cleanly designed user interface. For most people who are unfamiliar with AmigaOS and the use of Amiga emulators, setting up a usable AmigaOS emulation environment can be a daunting task. I have often heard of even veteran computing professionals feeling like complete computing newbees again when being confronted with all the Amiga jargon floating around on Amiga forums. With this article I intend to help provide information and pointers to resources for getting familiar with classic Amiga emulation while focussing on the freely available WinUAE emulator for the Windows platform. With this guide setting up an advanced classic emulation environment shoulld be possible for any PC user.

This article also includes many WinUAE screenshots, videos and information on acquiring and using freely available software.
Unix+clones

X Window Manager Benchmarks (E17 on Top)

Post date: June 9, 2005, 14:06 Category: Benchmarks Views: 3733 Comments
Tutorial quote: I've been focusing on some stability issues of late in E17, but more importantly - speed. I've been doing a little profiling and shaving off cycles where I can find readily optimizable code. I have E17 starting in 0.52 seconds (from execute to usable desktop). Considering that involves loading and rendering and scaling a complex multi-leayered desktop background, loading multiple useful modules (pager, ibar, start, dropshadow, cpufreq handler, clock, etc.), then that's not too bad.

Now I'm a numbers man. I like numbers. I don't like vague "it's faster than X" or "that's slower than this" statements without numbers to back it up. I also like to play fair. Also given there are no "performance suites" i know of that measure window manager performance, I wrote a quick and dirty one.
Unix+clones

Version control for non-programmers with Subversion

Post date: June 9, 2005, 04:06 Category: Software Views: 2913 Comments
Tutorial quote: Imagine a utility that lets you make an annotated backup of any of your project files with the click of a mouse or a single command. It would let you review the history of your backups and recover any version you wished. And it would integrate with your file browser and would keep track of files that have changed since your last backup. The utility exists -- Subversion, and its companion program TortoiseSVN, can help you safely manage your files as you work with them.
Unix+clones

Apple's G5 versus x86, Mac OS X versus Linux

Post date: June 4, 2005, 03:06 Category: Benchmarks Views: 3113 Comments
Tutorial quote: This article is written solely from the frustration that I could not get a clear picture on what the G5 and Mac OS X are capable of. So, be warned; this is not an all-round review. It is definitely the worst buyer’s guide that you can imagine. This article cares about speed, performance, and nothing else! No comments on how well designed the internals are, no elaborate discussions about user friendliness, out-of-the-box experience and other subjective subjects. But we think that you should have a decent insight to where the G5/Mac OS X combination positions itself when compared to the Intel & AMD world at the end of this article.
Unix+clones

Developing GNOME Applications with Java

Post date: May 28, 2005, 00:05 Category: Programming Views: 3248 Comments
Tutorial quote: Design your application's GUI look in XML, write the code in Java and plug the whole thing in to the GNOME desktop.
Unix+clones

Optimizing C/C++ programs using the GProf profiler

Post date: May 24, 2005, 18:05 Category: Optimizing Views: 6529 Comments
Tutorial quote: One of the most important things to keep in mind while optimizing an application is: optimize where it counts. It is no use to spend hours optimizing a piece of code that usually runs for only 0.04 seconds anyway.

GProf provides a surprisingly easy way to profile your C/C++ application and spot the interesting pieces right away. A small case study shows how GProf was used to reduce the running time of a real-world application from over 3 minutes to under 5 seconds, by identifying 2 data structures as important and optimizing those.

Historically, the program goes back as far as 1982, when it was introduced on the the SIGPLAN Symposium on Compiler Construction. It is now a standard tool available on virtually all flavors of UNIX.
Unix+clones

Emulating an OS with qemu

Post date: May 22, 2005, 08:05 Category: Emulation Views: 4288 Comments
Tutorial quote: When you want to emulate a PC with a complete operating system on your computer, the most heard answer would be VMWare. Sure, for Linux, there is wine, but that package is targeted to handle only window$ and not all programs are supported. No, I'm talking about simulating a complete OS on a virtual PC with virtual hardware.

Although VMware does an almost perfect job at it, it isn't free software. Time to see what the Open Source community has to offer. That's when I stumbled upon qemu. Let's have a look at the possibilities.
Unix+clones

Encrypted NFS with OpenSSH

Post date: May 21, 2005, 19:05 Category: Network Views: 2772 Comments
Tutorial quote: NFS is a widely deployed, mature, and understood protocol that allows computers to share files over a network. The main problems with NFS are that it relies on the inherently insecure UDP protocol, transactions are not encrypted, hosts and users cannot be easily authenticated, and its difficulty in firewalling. This article provides a solution to most of these problems for Linux clients and servers. These principles may also be applied to any UNIX server with ssh installed. This article assumes basic knowledge of NFS and firewalling for Linux.
Unix+clones

Postfix performance tuning

Post date: May 21, 2005, 11:05 Category: Optimizing Views: 3397 Comments
Tutorial quote: Postfix is fast out of the box, but like other packages, you can usually tune it to work even faster. Furthermore, there are situations where Postfix may not perform as well as you expected, whether because of hardware or software limitations on the server system or other adverse conditions, such as a big influx of spam or undeliverable mail. This article shows you how to find and analyze the most common performance problems.
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