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The Perfect Desktop - OpenSUSE 11.1 (GNOME)
This tutorial shows how you can set up an OpenSUSE 11.1 desktop that is a full-fledged replacement for a Windows desktop, i.e. that has all the software that people need to do the things they do on their Windows desktops. The advantages are clear: you get a secure system without DRM restrictions that works even on old hardware, and the best thing is: all software comes free of charge.
Red Hat has announced a new software maintenance service for Red Hat Enterprise Linux (RHEL), known as Extended Update Support (EUS). This allows customers to standardize on one RHEL environment for up to 18 months.
- Red Hat has launched a new software maintenance service, Extended Update Support. Company officials said the new service offers customers extended service level support and cost savings by allowing them to standardize on one Red Hat Enterprise Linux environment for up to 18 months.
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The Perfect Server - OpenSUSE 11.1
This is a detailed description about how to set up an OpenSUSE 11.1 server that offers all services needed by ISPs and hosters: Apache web server (SSL-capable), Postfix mail server with SMTP-AUTH and TLS, BIND DNS server, Proftpd FTP server, MySQL server, Dovecot POP3/IMAP, Quota, Firewall, etc. This tutorial is written for the 32-bit version of OpenSUSE 11.1, but should apply to the 64-bit version with very little modifications as well.
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How To Rebuild The Squid 2.6 Debian Package with Support For X-Forwarded-For Headers
This article describes how you can rebuild the Squid 2.6 package for Debian Etch with support for X-Forwarded-For headers - this feature is not enabled in the default Debian Etch Squid package. This feature is useful if you are using Squid as a reverse proxy for your web site and are using a load balancer (such as HAProxy) in front of Squid - it allows us to track the client's original IP address instead of the load balancer's IP address (which to Squid appears as the client).
Novell has unveiled their latest release to the openSUSE line with 11.1. Offering both updates and new features, Novell continues to push for more openness and transparency. The new release includes Linux kernel 2.6.27, Python 2.6, Mono 2.0, OpenOffice 3.0, and many others. "[...] Our choice was also influenced by impressive changes that are transpiring in the openSUSE community, which is growing rapidly and is also becoming more open, inclusive, and transparent. Last month, the project announced its first community-elected board, a major milestone in its advancement towards community empowerment. This is a very good openSUSE release and it delivers some very impressive enhancements. The distro has evolved tremendously in the past two releases and is becoming a very solid and usable option for regular users."
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Creating Virtual Machines For Xen, KVM, VMware Workstation 6, and VMware Server With vmbuilder On Ubuntu 8.10
vmbuilder is a tool (introduced on Ubuntu 8.10) that allows you to build virtual machines (with Ubuntu as the OS) for multiple virtualization techniques. Currently it supports Xen, KVM, VMware Workstation 6, and VMware Server. You can afterwards copy the virtual machines to another system (a Xen, KVM, VMware Workstation 6, or VMware Server host) and run them there.
This guide explans how you can install and use KVM for creating and running virtual machines on an Ubuntu 8.10 server. I will show how to create image-based virtual machines and also virtual machines that use a logical volume (LVM). KVM is short for Kernel-based Virtual Machine and makes use of hardware virtualization, i.e., you need a CPU that supports hardware virtualization, e.g. Intel VT or AMD-V.
I still appreciate offline applications for the integration with the desktop, speed, and features they sport. The Evolution contact and calendaring application is a great example: it's as feature-packed as Microsoft Outlook, but with GNOME integration, and it's fast. Gmail, by comparison, is slow and lacks any desktop integration. In a perfect world, Evolution would sync with Google's PIM apps. Unfortunately, there aren't any good, easy-to-use, comprehensive guides for setting up Evolution to sync with all of these apps -- until now.
An couple of anonymous readers wrote in to let us know about a followup to last Wednesday's story of the teacher who didn't believe in free software. The Linux advocate who posted the original piece has cooled off and graciously apologized for going off half-cocked (even though the teacher had done the same), and provided a little more background which, while not excusing the teacher's ignorance, does make her actions somewhat more understandable. Ken Starks has talked with the teacher, who has received a crash education in technology over the last few days — Starks is installing Linux on her computer tomorrow. He retracts his insinuations about Microsoft money and the NEA. All in all he demonstrates what a little honest communication can do, a lesson that all of us who advocate for free software can take to heart. "The student did get his Linux disks back after the class. The lad was being disruptive, but that wasn't mentioned. Neither was the obvious fact that when she saw a gaggle of giggling 8th grade boys gathered around a laptop, the last thing she expected to see on that screen was a spinning cube. She didn't know what was on those disks he was handing out. It could have been porn, viral .exe's...any number of things for all she knew. When she heard that an adult had given him some of the disks to hand out, her spidey-senses started tingling. Coupled with the fact that she truly was ignorant of honest-to-goodness free software, and you have some fairly impressive conclusion-jumping. In a couple of ways, I am guilty of it too."
VorlonFog writes "According to Information Week, IBM has introduced a line of business computers that avoid Microsoft's desktop environment in favor of open source software. IBM worked with Canonical and Virtual Bridges to create the platform, which IBM claims saves businesses $500 to $800 per user on software licenses and an additional $258 per user 'since there is no need to upgrade hardware to support Vista and Office.'"
Read more of this story at Slashdot.
This is just a short tutorial showing how to create an RPM version of FreeRADIUS 2.1.1-6 on CentOS 5.2. This version of FreeRADIUS is not yet included in the CentOS 5 repositories.
Well folks, it's that time to announce a new stable Slackware release again. So, without further ado, announcing Slackware version 12.2! Since we've moved to supporting the 2.6 kernel series exclusively (and fine-tuned the system to get the most out of it), we feel that Slackware 12.2 has many improvements over our last release (Slackware 12.1) and is a must-have upgrade for any Slackware user.
The Magic Folder is actually just a Windows Sidebar gadget that you can drag files to, and it can automatically sort them into the proper folders, based on rules which you can configure easily.
Using the Magic Folder
Once you install the gadget, you'll probably need to add it by right-clicking on the sidebar somewhere and choosing "Add Gadgets" and then dragging it to the desktop or the sidebar.
eWEEK Labs has been testing Fedora 10, the latest version of the community-supported Linux-based operating system that serves as a technology proving ground for future Red Hat software products. Here is a rundown on upgrading from Fedora 9 to the current version using the distribution's handy preupgrade tool.
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How To Resize RAID Partitions (Shrink & Grow) (Software RAID)
This article describes how you can shrink and grow existing software RAID partitions. I have tested this with non-LVM RAID1 partitions that use ext3 as the file system. I will describe this procedure for an intact RAID array and also a degraded RAID array.
Two Oregon educators who founded the K12Linux project seven years ago are glad that they have been able to hand that project over to Fedora, the home they always meant for K12Linux to have.
GNOME's Vala programming language lets you use the GLib2 object system at the heart of the GNOME desktop without having to do object-oriented programming in ANSI C. Unlike Mono or Java, a Vala program does not require any virtual machine or runtime libraries, so people who use your Vala objects don't even have to know they are not written in C.
Thanks to a group of KDE developers, it is possible to run some KDE-specific applications up and running on Microsoft Windows. Jack Wallen explains how to install KDE applications and have them run on the Windows operating system. by Mark Kaelin
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Installing VirtualBox 2.0 On An Ubuntu 8.10 Desktop
This tutorial shows how you can install Sun xVM VirtualBox on an Ubuntu 8.10 desktop. With VirtualBox you can create and run guest operating systems ("virtual machines") such as Linux and Windows under a host operating system. There are two ways of installing VirtualBox: from precompiled binaries that are available for some distributions and come under the PUEL license, and from the sources that are released under the GPL. This article will show how to set up VirtualBox 2.0 from the precompiled binaries.
An anonymous reader lets us know about a new initiative designed to help shield the open source software community from threats posed by patent trolls. The initiative, called Linux Defenders (the website is slated to go live tomorrow, Dec. 9), is sponsored by a consortium of technology companies including IBM. "The most novel feature of the new program... will be its call to independent open source software developers all over the world to start submitting their new software inventions to Linux Defenders... so that the group's attorneys and engineers can, for no charge, help shape, structure, and document the invention in the form of a 'defensive publication.' Linux Defenders will then also see to it that the publication, duly attributing authorship of the invention to the developer who submitted it, is filed on the IP.com Web site, a database used by the US Patent and Trademark Office and other patent examiners throughout the world when they are trying to determine whether a proposed patent is truly novel..."
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OS X is heralded for its friendliness, but according to Jack Wallen, it falls short in many other respects. Find out why he says Linux is superior in everything from flexibility to portability to cost.This download is also available as an entry in our 10 Things blog.
Archmbox lets you list, move, and copy messages from one mbox mail file to another, primarily for archiving messages. This tool lets you easily move all messages that are older than a given date into another (possibly compressed) mbox file, and you can also grab or delete messages by matching regular expressions against message headers.
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Server Monitoring With munin And monit On CentOS 5.2
In this article I will describe how you can monitor your CentOS 5.2 server with munin and monit. munin produces nifty little graphics about nearly every aspect of your server (load average, memory usage, CPU usage, MySQL throughput, eth0 traffic, etc.) without much configuration, whereas monit checks the availability of services like Apache, MySQL, Postfix and takes the appropriate action such as a restart if it finds a service is not behaving as expected. The combination of the two gives you full monitoring: graphics that lets you recognize current or upcoming problems (like "We need a bigger server soon, our load average is increasing rapidly."), and a watchdog that ensures the availability of the monitored services.
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Installing VirtualBox 2.0 On Mandriva 2009.0
This tutorial shows how you can install Sun xVM VirtualBox on a Mandriva 2009.0 desktop. With VirtualBox you can create and run guest operating systems ("virtual machines") such as Linux and Windows under a host operating system. There are two ways of installing VirtualBox: from precompiled binaries that are available for some distributions and come under the PUEL license, and from the sources that are released under the GPL. This article will show how to set up VirtualBox 2.0 from the precompiled binaries.
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Installing ubuntu-system-panel (USP) On Ubuntu 8.10
ubuntu-system-panel is a simple launcher for the GNOME desktop, providing easy access to Places, Applications and common configuration items for your computer. This guide shows how to install and configure it on an Ubuntu 8.10 desktop.
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The Perfect Desktop - Fedora 10 (GNOME)
This tutorial shows how you can set up a Fedora 10 desktop (GNOME) that is a full-fledged replacement for a Windows desktop, i.e. that has all the software that people need to do the things they do on their Windows desktops. The advantages are clear: you get a secure system without DRM restrictions that works even on old hardware, and the best thing is: all software comes free of charge.
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Storing Files/Directories In Memory With tmpfs
You probably know that reading from RAM is a lot of faster than reading files from the hard drive, and reduces your disk I/O. This article shows how you can store files and directories in memory instead of on the hard drive with the help of tmpfs (a file system for creating memory devices). This is ideal for file caches and other temporary data (such as PHP's session files if you are using session.save_handler = files) because the data is lost when you power down or reboot the system.
How would you characterize the relationship between Windows and Linux? Is it purely adversarial, do they affect one another in substantive ways, or are they just two different tech ideologies? Take the poll! by Selena Frye
Squid Graph is a Perl script that takes your Squid proxy server access.log file and generates a Web page showing you statistics about your proxy accesses and transfers, including the number of cache hits and the percentage of requests that were served by the cache alone. With Squid Graph you can see how well tweaks to your Squid configuration are working.
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Set Up A Fully Encrypted Raid1 LVM System
For this Howto I use Debian Lenny (still testing and not "stable" for the simple reason as - contrary to Debian Etch and/or Ubuntu 8.04/8.10 - the install routine does setup the initrd correctly so that you can set up encrypted swap and also an encrypted raid1 lvm during install). This Howto will be heavy on screen shots again - a lot of them are repetitive as I setup multiple partitions at once. Basically I will set up the system in a way that (a) everything [except for /boot] will be encrypted, (b) everything will be on a raid1 and (c) have a LVM for your data partition so that this one can be easily expanded.
Virtualized computing environments can take advantage of built-in virtualization support in modern dual-core processors, but when it comes to 3-D acceleration in virtual machines, almost all fall flat on their faces. VMGL is a little-known application written as part of Google's Summer of Code 2006 program that lets OpenGL apps running inside a virtual machine take advantage of the graphics hardware acceleration on the host. It has limitations, but if you want 3-D in VMs, VMGL is your best bet.
k33l0r writes "Recently I've been thinking about developing (or learning to develop) for Linux. I'm a IT university student but my degree program focuses almost exclusively on Microsoft tools (Visual Studio, C#, ASP.NET, etc.) which is why I would like to expand my repertoire on my own. Personally I'm quite comfortable in a Linux environment, but have never programmed for it. Over the years I've developed a healthy fear of everything Java and I'm not too sure of what I think of Python's use of indentation to delimit blocks. The question that remains is, what language and tools should I be using?"
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Installing Nginx With PHP5 And MySQL Support On Debian Etch
Nginx (pronounced "engine x") is a free, open-source, high-performance HTTP server. Nginx is known for its stability, rich feature set, simple configuration, and low resource consumption. This tutorial shows how you can install Nginx on a Debian Etch server with PHP5 support (through FastCGI) and MySQL support.
PC/OS aims to be an easy-to-use Linux distribution right out of the box. Being Ubuntu-based, it has a head start on being user-friendly, but PC/OS goes above and beyond Ubuntu's measures to ensure ease of use by having common third-party non-GPL software included in the install.
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Installing Nginx With PHP5 And MySQL Support On Debian Etch
Nginx (pronounced "engine x") is a free, open-source, high-performance HTTP server. Nginx is known for its stability, rich feature set, simple configuration, and low resource consumption. This tutorial shows how you can install Nginx on a Debian Etch server with PHP5 support (through FastCGI) and MySQL support.
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Useful Uses Of netcat
This short article shows some useful netcat commands. netcat is known as the TCP/IP swiss army knife. From the netcat man page: netcat is a simple unix utility which reads and writes data across network connections, using TCP or UDP protocol. It is designed to be a reliable "back-end" tool that can be used directly or easily driven by other programs and scripts. At the same time, it is a feature-rich network debugging and exploration tool, since it can create almost any kind of connection you would need and has several interesting built-in capabilities.
Buckbeak writes "I like to carry my Linux systems around with me, on USB flash drives. Typically, SanDisk Cruzers or Kingston HyperX. I encrypt the root partition and boot off the USB stick. Sometimes, the performance leaves something to be desired. I want to be able to to an 'apt-get upgrade' or 'yum update' while surfing but the experience is sometimes painful. What can I do to maximize the performance of Linux while running off of a slow medium? I've turned on 'noatime' in the mount options and I don't use a swap partition. Is there any way to minimize drive I/O or batch it up more? Is there any easy way to run in memory and write everything out when I shut down? I've tried both EXT2 and EXT3 and it doesn't seem to make much difference. Any other suggestions?"
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Everyone knows and loves rsync, the command that lets you clone a directory tree to another disk or system with the ability to keep the clone fresh in an incremental and bandwidth-efficient manner. Sometimes, however, you want to sync in the reverse direction. With bidirectional filesystem syncing tools, there is no primary filesystem -- you just tell the tool to make sure both target directories, or clones, are identical. Here's a hands-on look at two tools designed to accomplish that task: DirSync Pro and Unison.
Mounting and unmounting filesystems used to be straightforward in GNU/Linux. A basic knowledge of the mount command or some editing of /etc/fstab in a text editor and you were done. However, with the addition of udev in the 2.6 kernel for autoplugging, and the demand for hotswapping USB devices, along with the increased use of logical volume managers and other complications, the process is now more complicated -- perhaps too complicated for many among the growing number of desktop users. That is where graphical mount managers such as Forelex Mount Manager, PySDM, and MountManager find their niche.
MNonitor your network with PasTmon passive traffic monitor. The PasTmon passive traffic monitor enable you to recording which clients are interacting with which services, when and how long things took. You can then use the application's PHP Web interface to investigate these figures to see if any host is connecting to Web services that it shouldn't, or is contacting services suspiciously more frequently than you would expect for normal operation, or when response times become excessively long.
The latest version of Canonicals Linux distribution, Ubuntu 8.10, still outshines the Linux desktop offerings from Red Hat and Novell, and is the best open-source alternative to Microsoft and Apple operating systems. However, both Red Hats Enterprise Linux and Novells SUSE distributions are ahead of Ubuntu 8.10 in the server space.
- Canonical's Ubuntu 8.10, the latest version of the popular Linux-based operating system for desktops and servers, hit the Internet in early November bearing a modest assortment of updates to the open-source software components that compose it. Based on my tests of Ubuntu 8.10 which is more fanciful...
One of the first things I do upon installing a Linux distribution is put the Network Monitor applet on my GNOME panel. Watching the blue lights twinkle on and off makes me aware of network traffic. But if you want more details about what's happening on your network, such as which application is hogging bandwidth or what each network interface is up to, you can turn to specialty tools like NetHogs and IPTraf. While NetHogs is a unique tool altogether, IPTraf can be used on a server as well as by a home user.
Several readers pointed out a ComputerWorld UK blog piece on the expanding ripples of the Vista fiasco. Glyn Moody quotes an earlier Inquirer piece about Vista, which he notes "has been memorably described as DRM masquerading as an operating system": "Studies carried out by both Gartner and IDC have found that because older software is often incompatible with Vista, many consumers are opting for used computers with XP installed as a default, rather than buying an expensive new PC with Vista and downgrading. Big business, which typically thinks nothing about splashing out for newer, more up-to-date PCs, is also having trouble with Vista, with even firms like Intel noting XP would remain the dominant OS within the company for the foreseeable future." Moody continues: "What's really important about this is not so much that Vista is manifestly such a dog, but that the myth of upgrade inevitability has been destroyed. Companies have realized that they do have a choice — that they can simply say 'no.' From there, it's but a small step to realizing that they can also walk away from Windows completely, provided the alternatives offer sufficient data compatibility to make that move realistic."
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Managing OpenVZ With The Vtonf Control Panel On CentOS 5.2
Vtonf is a free web-based control panel (released under the GPL license) for managing virtual private servers (VPS) based on OpenVZ. It makes it very easy to create and manage OpenVZ VMs even for people with little technical knowledge. Right now, Vtonf is available only for RedHat, Fedora, and CentOS (support for Debian is planned), therefore I describe its installation and usage on a CentOS 5.2 server.
ruphus13 points out news from the Linux Foundation, which announced that all major Linux distributions meet certification requirements for the US Department of Defense's IPv6 mandates. The announcement credits work done by the IPv6 Workgroup, whose members include IBM, HP, Nokia-Siemens, Novell and Red Hat. Quoting: "Linux has had relatively robust IPv6 support since 2005, but further work was needed for the open source platform to achieve full compliance with DoD standards. The Linux Foundation's IPv6 workgroup analyzed the DoD certification requirements and identified key areas where Linux's IPv6 stack needed adjustments in order to guarantee compliance. They collaboratively filled in the gaps and have succeeded in bringing the shared technology into alignment with the DoD's standards."
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kev009 writes to recommend his editorial overview of the past, present and future of Linux file systems: ext2, ext3, ReiserFS, XFS, JFS, Reiser4, ext4, Btrfs, and Tux3. "In hindsight it seems somewhat tragic that JFS or even XFS didn't gain the traction that ext3 did to pull us through the 'classic' era, but ext3 has proven very reliable and has received consistent care and feeding to keep it performing decently. ... With ext4 coming out in kernel 2.6.28, we should have a nice holdover until Btrfs or Tux3 begin to stabilize. The Btrfs developers have been working on a development sprint and it is likely that the code will be merged into Linus's kernel within the next cycle or two."
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jammag writes "Ever since the GNewSense team pointed out that the Linux kernel contains proprietary firmware blobs, the question of whether a given distro is truly free software has gotten messier, notes Linux pundit Bruce Byfield. The FSF changed the definition of a free distribution, and a search for how to respond to this new definition is now well underway. Who wins and what solutions are implemented could have a major effect on the future of free and open source software. Debian has its own solution (by allowing users to choose their download), as do Ubuntu and Fedora (they include the offending firmware by default but make it possible to remove it). Meanwhile, the debate over firmware rages on. What resolves this issue?"
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Samba + Clamd + Samba-Vscan On CentOS 5.2
This is a howto on getting samba + clamav + samba-vscan to work on a CentOS 5.2 system.
When users want the latest in free and open source software (FOSS), they are likely to think first of sites like freshmeat, or perhaps Softpedia or GnomeFiles. However, as the FOSS community has divided into specialized communities, sites for new releases have proliferated, to the point where it is difficult to keep track of them all. Since 2007, openDesktop.org has provided a portal for many of these specialized sites. Under the slogan "Let's build the desktop of the future," openDesktop.org provides a quick overview of new software that is independent of desktop or distribution.
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The Perfect Server - Fedora 10
This is a detailed description about how to set up a Fedora 10 server that offers all services needed by ISPs and hosters: Apache web server (SSL-capable) with PHP5/Ruby/Python, Postfix mail server with SMTP-AUTH and TLS, BIND DNS server, Proftpd FTP server, MySQL server, Dovecot POP3/IMAP, Quota, Firewall, etc.
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How To Upgrade From Fedora 9 To Fedora 10 (Desktop & Server)
This article describes how you can upgrade your Fedora 9 system to Fedora 10 (which was released yesterday - November 25, 2008). The upgrade procedure works for both desktop and server installations.
Maybe the command line isn't your favorite place to hang out, but to be an effective Linux admin, you need to be able to wield a few essential commands. Jack Wallen says these 10 are guaranteed to simplify your Linux admin life -- and he explains why.This download is also...
NFS-GANESHA is an NFS version 2-4 server that runs in the user address space instead of as part of the operating system kernel. Filesystem in Userspace (FUSE) lets you run a filesystem in the user address space instead of as part of the Linux kernel, but the FUSE support in the Linux kernel from many Linux distributions does not allow you to export FUSE through NFS. NFS-GANESHA lets you expose FUSE through NFS without patching your kernel.
Making labels for DVDs and their cases is an often overlooked task. Many discs are lucky to have some terse information quickly scrawled on them after burning. But there are some fine open source applications available for creating labels for CD-ROM and DVD disks and printing jewel case inserts, including gLabels, kover, and cdlabelgen.
ekimd writes "Fedora 10, aka 'Cambridge,' was released today. Some of the major features include: 'wireless connection sharing enables ad hoc network sharing, better setup and use of printers through improved management tools, virtualization storage provisioning for local and remote connections now simplified, SecTool is a new security audit and intrusion detection system.' Versions of major software include: Gnome 2.24, Eclipse 3.4 and RPM 4.6. A features list can be found here." Reader Nate2 suggests LinuxFormat's detailed look at the new release, and adds a few more details about the software it contains: the release includes "a new graphical boot-up sequence, OpenOffice.org 3, many improvements to sound support via PulseAudio and other updates."
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Installing And Configuring ntop
This is a tool to collect the network information with simple configurations. Users may use the web browser to access the current network views that include charts and statistics.
With Fedora 10 scheduled for release today, many users are thinking about how they are going to upgrade. A complete upgrade is something you do no more than twice a year, so the details are easy to forget. Also, the Fedora upgrade process, which centers on pointing to a new repository, is more complex than, say, the equivalent Debian process, in which repositories remain constant and only their contents change with a new release. But an even stronger reason for the uncertainty is that a Fedora system can be upgraded in at least four ways, each of which has its advantages and disadvantages.
How To Install VMware Server 2 On Ubuntu 8.10
This tutorial provides step-by-step instructions on how to install VMware Server 2 on an Ubuntu 8.10 desktop system. With VMware Server you can create and run guest operating systems ("virtual machines") such as Linux, Windows, FreeBSD, etc. under a host operating system. This has the benefit that you can run multiple operating systems on the same hardware which saves a lot of money, and you can move virtual machines from one VMware Server to the next one (or to a system that has the VMware Player which is also free).
When Maine State Employees Association SEIU Local 1989 needed software to safeguard confidential information and ward off online threats, it found an open source solution. The labor union, which represents more than 15,000 public and private sector workers throughout the State of Maine, chose Untangle's open source Gateway platform, a solution that not only helps keep confidential data away from prying eyes, but also protects against spam, spyware, phishing, and viruses.
Dual booting your machine sounds like a complicated task, but if you want to run both Windows and Ubuntu, it is a piece of cake. In a short amount of time with minimum effort you can be set up to boot into either OS on your computer.
Spreadsheets might be called databases for the timid, since they're more user-friendly than databases and do a good job working with limited amounts of data. Some tools for databases can work well with spreadsheets too. Take for instance DataForm, a new OpenOffice.org Calc extension that provides a form-like interface designed to make entering and finding spreadsheet data easier.
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Clone/Back Up/Restore OpenVZ VMs With vzdump
vzdump is a backup and restore utility for OpenVZ VMs. This tutorial shows how you can use it to clone/back up/restore virtual machines with vzdump.
TRNick writes "How can developers who are working for free protect themselves and avoid getting exploited by business users of Linux? TechRadar has an interview with former Fedora project leader Max Spevack to find out how his new role as manager of the community architecture team is designed to help. Quoting: 'About two-thirds of the Fedora packages are maintained by community people, and if we didn't have that community, that chunk of work would either not get done, which would significantly harm Red Hat's entire value, or would have to made up by more [paid] engineers. The challenge on the flip side of that is to make sure that everyone in the Fedora community feels valued, that everyone who contributes can be proud of the way that Red Hat uses their code.'"
Read more of this story at Slashdot.
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VBoxHeadless - Running Virtual Machines With VirtualBox 2.0 On A Headless CentOS 5.2 Server
This guide explains how you can run virtual machines with Sun xVM VirtualBox 2.0 on a headless CentOS 5.2 server. Normally you use the VirtualBox GUI to manage your virtual machines, but a server does not have a desktop environment. Fortunately, VirtualBox comes with a tool called VBoxHeadless that allows you to connect to the virtual machines over a remote desktop connection, so there's no need for the VirtualBox GUI.
MySQL GUI Tools is a suite of graphical desktop applications for working with and administering MySQL servers. The suite consists of three tools: MySQL Query Browser, MySQL Administrator, and MySQL Migration Assistant (available only on Windows). We'll look at the first two to see how well they let us manage MySQL without using the command line.
System monitoring tool Nagios offers a powerful mechanism for receiving events and commands from external applications. External commands are usually sent from event handlers or from the Nagios Web interface. You will find external commands most useful when writing event handlers for your system, or when writing an external application that interacts with Nagios.
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The Perfect Desktop - Ubuntu Studio 8.10
This tutorial shows how you can set up an Ubuntu Studio 8.10 desktop that is a full-fledged replacement for a Windows desktop, i.e. that has all the software that people need to do the things they do on their Windows desktops. The advantages are clear: you get a secure system without DRM restrictions that works even on old hardware, and the best thing is: all software comes free of charge.
The free and open source office suite OpenOffice.org might be a killer app for many, but its inability to properly display documents created in the proprietary Microsoft Office formats hinders its widespread acceptance in multi-OS business environments with many legacy .doc and .xls files. If changing over to an open document format is not an option, try SoftMaker Office. It's no OpenOffice.org-killer, but it's a full featured office suite that has great compatibility with Microsoft Office. Sure, it costs $80, but you can increase your karma by running it on Linux.
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Anonymous Proxy Using SQUID 3 On CentOS 5.x
This howto describes step by step a method to install a SQUID 3 server as an Anonymous Proxy. An anonymous proxy is a tool that attempts to make activity on the Internet untraceable. It accesses the Internet on the user's behalf, protecting personal information by hiding the source computer's identifying information. Simply say to hide your IP.
Bandwidth limitation is still a problem for a lot of people who connect to the Internet. You can improve your available bandwidth by installing Squid caching proxy server on your network with configuration parameters that will increase your byte hit rate, giving you about 30-60% more bandwidth.
Christoph Haas writes "A picture is worth a thousand words. And thanks to screenshots.debian.net this finally comes true for Debian packages. The new website was launched just a week ago and has already collected screenshots for 740 packages shipping with the Linux distribution — with new uploads pouring in every hour. Debian users can finally get an impression of how an application would look before installing it."
Read more of this story at Slashdot.
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Setting Up Master-Master Replication On Four Nodes With MySQL 5 On Debian Etch
This tutorial explains how you can set up MySQL master-master replication on four MySQL nodes (running on Debian Etch). The difference to a two node master-master replication is that if you have more than two nodes, the replication goes in a circle, i.e., with four nodes, the replication goes from node1 to node2, from node2 to node3, from node3 to node4, and from node4 to node1.
With diff-ext, GNOME users can compare and merge files from within Nautilus. If, instead, you use KDE 3, try out kdiff-ext from the same site, which works with Konqueror. Each utility handles paths to files and directories and invokes an external diff tool to perform the grunt work. With diff-ext you can easily compare two files with different names, from different directories, or whole directory trees.
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Hardening The Linux Kernel With Grsecurity (Debian)
Security is based on three characteristics: prevention, protection and detection. Grsecurity is a patch for Linux kernel that allows you to increase each of these points. This howto was performed on a Debian Lenny system. Thus some tools are Debian specific. However, tasks can be performed with other distro specific tools or even with universal tools (make).
Rinisari writes "Finally, the day has come. Adobe has released a pre-release version of the 64-bit Flash player. It is available at the Adobe Labs Flash Player 10 download site immediately. Where are the Windows and Mac versions? "Release of this alpha version of 64-bit Flash Player on Linux is the first step in delivering upon Adobes commitment to make Flash Player native 64-bit across platforms. We chose Linux as our initial platform in response to numerous requests in our public Flash Player bug and issue management system and the fact that Linux distributions do not ship with a 32-bit browser or a comprehensive 32-bit emulation layer by default. Until this pre-release, use of 32-bit Flash Player on Linux has required the use of a plugin wrapper, which prevents full compatibility with 64-bit browsers. With this pre-release, Flash Player 10 is now a full native participant on 64-bit Linux distributions." Windows and Mac OS X 64-bit versions will follow, and the final versions all will be released simultaneously. Tamarin, the JIT compiler in Flash, is now capable of producing 64-bit code and nspluginwrapper is no longer required. There are, however, no plans to release a debugger version of the 64-bit plugin."
Read more of this story at Slashdot.
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Setting Up ProFTPd + TLS On Ubuntu 8.10 (Intrepid Ibex)
FTP is a very insecure protocol because all passwords and all data are transferred in clear text. By using TLS, the whole communication can be encrypted, thus making FTP much more secure. This article explains how to set up ProFTPd with TLS on an Ubuntu 8.10 server.
Ashmash writes "Phoronix is reporting on a new Linux driver nVidia is about to release that brings PureVideo features to Linux. This video API will reportedly be in nVidia's 180 series driver for Linux, Solaris, and *BSD. PureVideo has been around for several nVidia product generations, but it's the first time they're bringing this feature to these non-Windows operating systems to provide an improved multimedia experience. This new API is named VDPAU, and is described as: 'The Video Decode and Presentation API for Unix (VDPAU) provides a complete solution for decoding, post-processing, compositing, and displaying compressed or uncompressed video streams. These video streams may be combined (composited) with bitmap content, to implement OSDs and other application user interfaces.'"
Read more of this story at Slashdot.
Most of the new breed of open source hardware centers on specific products. Bug Labs is taking a different approach. Instead of developing particular devices, Bug Labs' goal is to provide a Lego-like collection of open source hardware and software that customers can use to build their own devices. According to CEO Peter Semmelhack, the result should be not only a higher degree of innovation, but also a forerunner of the hardware business of the future.
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How To Install VMware Server 2 On A Mandriva 2009.0 Desktop
This tutorial provides step-by-step instructions on how to install VMware Server 2 on a Mandriva 2009.0 desktop system. With VMware Server you can create and run guest operating systems ("virtual machines") such as Linux, Windows, FreeBSD, etc. under a host operating system. This has the benefit that you can run multiple operating systems on the same hardware which saves a lot of money, and you can move virtual machines from one VMware Server to the next one (or to a system that has the VMware Player which is also free).
Mantis is that rare bug-tracking program for small projects that is neither too bloated nor too featureless. It's an excellent choice for developers who need a bug tracker that the average computer user can use. Its clean interface and numerous features make bug tracking fast and easy.
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Virtual Users And Domains With Postfix, Courier, MySQL And SquirrelMail (Ubuntu 8.10)
This document describes how to install a mail server based on Postfix that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier (Courier-POP3, Courier-IMAP), so that Courier can authenticate against the same MySQL database Postfix uses. The resulting Postfix server is capable of SMTP-AUTH and TLS and quota (quota is not built into Postfix by default, I'll show how to patch your Postfix appropriately). Passwords are stored in encrypted form in the database (most documents I found were dealing with plain text passwords which is a security risk). In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin and ClamAV so that emails will be scanned for spam and viruses. I will also show how to install SquirrelMail as a webmail interface so that users can read and send emails and change their passwords.
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dmidecode: Finding Out Hardware Details Without Opening The Computer Case
dmidecode is a tool for dumping a computer's DMI (some say SMBIOS) table contents in a human-readable format. This table contains a description of the system's hardware components, as well as other useful pieces of information such as serial numbers and BIOS revision. Thanks to this table, you can retrieve this information without having to probe for the actual hardware.
Vincent Danen believes in the power of the command line as being faster and more powerful than a GUI, once you get the hang of it. Here are some of his favorite tips and shortcuts for working from the CLI. by Vincent Danen
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How To Back Up An Ubuntu 8.10 System With SystemImager
SystemImager lets you create images of your Linux installations. To do so, you need an image server (should have enough disk space to store your images) and a so-called golden client (i.e., the system of which you want to make an image). This means that you have to install some software on your image server and on your golden client in order to run SystemImager. This tutorial shows how to install a SystemImager server and a SystemImager client, both using Ubuntu 8.10, and how to create/update/restore/delete images.
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Mantis Installation Tutorial - Fedora OS
This tutorial provides step-by-step instructions on how to install and configure Mantis - Defect Tracker on your Fedora operating system. Mantis is an open source free defect tracking utility that is really easy to configure and use. Its installation is also very easy if you follow the steps that I have mentioned below.
You probably rely on the services on your own private network -- wikis, mail servers, Web sites, and other applications you've installed. What happens when you have to leave the friendly confines of your network? With minimum exposure and few simple tools, you can get all of the comforts of home anywhere you can find an Internet connection.
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Installing The Link Layer Topology Discovery (LLTD) Protocol Responder For Linux On Debian Lenny
This document describes how to install and configure the Link Layer Topology Discovery (LLTD) Protocol - Responder Source Code from Microsoft. The lld2d daemon allows linux systems to display in Vista's Network Map. This How-To should be easily adaptable to other distros.
With the birth of KDE 4 came a shuffling of some key applications that has caused some serious grumbling among the Linux community. But this shuffling goes well beyond the old-school Linux fans and can affect new users as well. See what Jack Wallen has to say about what the...
Currently in late beta, the Sun Presenter Console (SPC) is Sun Microsystems' latest extension for OpenOffice.org and StarOffice. Other extensions from Sun in the last year, such as the Sun PDF Import Extension, Sun Presentation Minimizer, and Sun Weblog Publisher, have sometimes been lacking in design and sometimes buggy, but all of them are so invaluable that you might wonder why they are extensions instead of new features. SPC is no exception. It gives slide show presenters a separate view of their presentation and some tools to help them organize and deliver their talks, but includes no indication of how to set it up or use it.
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Installing And Using OpenVZ On Ubuntu 8.10
In this HowTo I will describe how to prepare an Ubuntu 8.10 server for OpenVZ. With OpenVZ you can create multiple Virtual Private Servers (VPS) on the same hardware, similar to Xen and the Linux Vserver project. OpenVZ is the open-source branch of Virtuozzo, a commercial virtualization solution used by many providers that offer virtual servers. The OpenVZ kernel patch is licensed under the GPL license, and the user-level tools are under the QPL license.
It's all about bipartisanship and unity in this week's roll call for the Linux.com forums. Old distro and new distro coming together, peripheral and computer learning how to work as one, and, just as the framers intended, a run-off between several distinguished "absentee answer" questions.
Sam Ramji, Microsofts open source point man, promotes the companys efforts in the areas of interoperability and open source software at the Apache Software Foundations ApacheCon conference. In a keynote at the event, Ramji discussed various Microsoft interoperability efforts involving partnerships with WSO2, HBase, AMQP and the companys "Oslo" modeling technology.
- In a keynote at the ApacheCon conference of open source developers and users, Sam Ramji, senior director of platform strategy at Microsoft, outlined a series of new moves the software giant has made regarding interoperability and continuing to make nice with the open source community. At the Apache...
My employer, Warnbro Community Library in Western Australia, had a problem with wasted paper from printing. Library patrons often sent unnecessary print jobs to the printers, then refused to pay for them, leaving reams of unclaimed paper. The library needed a print queue to enable library staff to control patrons' print jobs. It needed to be easy to set up and maintain and cost nothing. We found the answer in using Linux as a print server.
There are many ways to share files with teams of people, but few require only a Web browser for access and let you choose from tens of different ways of authenticating user access to the files. Such lightweight and universal access is the promise of Gollem, a file manager that runs in your Web browser. With it you can connect to and manage your files on a WebDAV, FTP, or traditional filesystem or SQL database.
An anonymous reader notes an Inquirer story reporting on something of a breakthrough in virtual machine management — a demonstration (not yet a product) of migrating a running virtual machine across CPUs from different vendors (video here). "RedHat and AMD have just done the so called impossible, and demonstrated VM live migration across CPU architectures. Not only that, they have demonstrated it across CPU vendors, potentially commoditizing server processors. This is quite a feat. Only a few months ago during VMworld, Intel and VMware claimed that this was impossible. Judging by an initial response, VMware is quite irked by this KVM accomplishment and they are pointing to stability concerns. This sound like scaremongering to me... All the interesting controversy aside, cross vendor migration is [obviously] a good thing for customers because it avoids platform lock-in."
Read more of this story at Slashdot.
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Virtual Hosting With PureFTPd And MySQL (Incl. Quota And Bandwidth Management) On Mandriva 2009.0
This document describes how to install a PureFTPd server that uses virtual users from a MySQL database instead of real system users. This is much more performant and allows to have thousands of ftp users on a single machine. In addition to that I will show the use of quota and upload/download bandwidth limits with this setup. Passwords will be stored encrypted as MD5 strings in the database.
Many network-attached storage (NAS) devices, in addition to offering network storage, offer features such as VPN access, calendaring, wikis, and even an iTunes server. The open source Amahi Linux Home Server provides all of that and more in a complete NAS box integrated with a Fedora 9 base.
Open source multimedia specialist Collabora is hiring developers to work on the nonlinear video editor PiTiVi. The Cambridge, UK-based company contributes heavily to the GStreamer media framework and other GStreamer-dependent projects, so PiTiVi is a natural fit -- and it fills a sorely needed niche on the Linux desktop.
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Installing Xen On CentOS 5.2 (i386)
This tutorial provides step-by-step instructions on how to install Xen (version 3.0.3) on a CentOS 5.2 system (i386). Xen lets you create guest operating systems (*nix operating systems like Linux and FreeBSD), so called "virtual machines" or domUs, under a host operating system (dom0). Using Xen you can separate your applications into different virtual machines that are totally independent from each other (e.g. a virtual machine for a mail server, a virtual machine for a high-traffic web site, another virtual machine that serves your customers' web sites, a virtual machine for DNS, etc.), but still use the same hardware. This saves money, and what is even more important, it's more secure. If the virtual machine of your DNS server gets hacked, it has no effect on your other virtual machines. Plus, you can move virtual machines from one Xen server to the next one.
An anonymous reader writes "In a move that's a win for the free software community, Creative Labs has decided to release their binary Linux driver for the Creative Sound Blaster X-Fi and X-Fi Titanium sound cards under the GPL license. This is coming after several failed attempts at delivering a working binary driver and years after these sound cards first hit the market."
Read more of this story at Slashdot.
The pam_mount project lets you unlock an encrypted filesystem automatically when you log in. The same password used to log in is used as the key to unlock the encrypted filesystem, so you only need to type it once. Using this method, you can easily share a laptop and have only a single user's home directory unlocked and mounted when he logs in. And pam_mount can mount any filesystem, not just encrypted filesystems, so you can use it, for example, with an NFS share that you are interested in but which you might not like to leave mounted when you are not logged in.
An anonymous reader writes "As a sequel to their Is Ubuntu Getting Slower? Phoronix now has out an article that compares the performance of Ubuntu 8.10 to Apple Mac OS X 10.5.5. They tested both the x86 and x86_64 spins of Ubuntu and threw at both operating systems a number of graphics, disk, computational, and Java benchmarks, among others. With the Mac Mini used in some of the comparisons 'Leopard' was faster while in others it was a tight battle."
Read more of this story at Slashdot.
If you're looking to run a serious open source collaboration server, Yahoo's Zimbra Collaboration Suite (ZCS) should be on your short list. This Web 2.0 email and groupware server offers AJAX Web-based administrator and user interfaces, a variety of useful groupware features, and email import functionality.
Even if you're happy with the Linux desktop you currently use, you might want to check out some alternatives to see what you could be missing. Jack Wallen highlights 10 of the best desktops here and explains what makes them stand out. by Jack Wallen
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Capture Sound With Audacity On CentOS 5.x
There are times when you need to save sounds playing over the web. This tutorial shows you how you can use Audacity to capture sound on CentOS 5.x. Of course, there are many other ways to capture sound, but this just works for me. As usual, no responsibilities are taken if anything goes awry at your end.
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phpsh, An Interactive Shell For PHP (Debian Etch)
phpsh is an interactive shell for php that features readline history, tab completion, quick access to documentation. It was developed at Facebook and ironically, is written mostly in python. This article explains how you can install/use it on a Debian Etch system.
So the other day I messaged another admin from the console using the regular old 'write' command (as I've been doing for over 10 years). To my surprise he didn't know how to respond back to me (he had to call me on the phone) and had never even known you could do that. That got me thinking that there's probably lots of things like that, and likely things I've never heard of. What sorts of things do you take for granted as a natural part of Unix that other people are surprised at?
Read more of this story at Slashdot.
The lightweight Dillo Web browser, in development for eight years, has always been a contender for the fastest browser available on GNU/Linux -- so much so that the Google's Chrome will have to be pretty nimble to outpace it. With last month's release of version 2.0, Dillo is faster than ever. If performance is your main priority, you might find Dillo's minimalistic tools and functional limitations an acceptable tradeoff -- but probably not.
Scott Johnson of GNUveau Networks has developed a solar-powered Internet "hub" system (running Ubuntu GNU/Linux) that he builds to order in his Daytona Beach, Florida, home. His objective is to bring computers and the Internet to places that have no connectivity, no phone service, and no electricity. This is no pipe dream. There are real SolarNetOne installations running in Africa right now, providing wireless connectivity and "Internet Cafe" access to hundreds of people. The system uses off-the-shelf hardware that Scott modifies to run on 12V -- and to use a lot less power than the stock versions. As Scott says, in solar-powered computer installations, "The Watt is king."
Linux Blog recommends an interview up on the O'Reilly site with Greg Kroah-Hartman, long-time Linux kernel hacker and the current Linux kernel maintainer for the USB driver core. He updates the free Linux driver program announced almost two years ago, which has really caught traction now with more than 300 developers volunteering. The interviewer begins by asking about Kroah-Hartman's claim that the Linux kernel now supports more devices than any other operating system ever has. "[One factor is] the ease of writing drivers; Linux drivers are at normally one-third smaller than Windows drivers or other operating system drivers. We have all the examples there, so it's trivial to write a new one if you have new hardware, usually because you can copy the code and go. We maintain them... forever, so the old ones don't disappear and we run on every single processor out there. I mean Linux is 80% of the world's top 500 super computers right now and we're also the number one embedded operating system today. We've got both sides of the market because it's — yeah it's pretty amazing. I don't know why, but we're doing something right."
Read more of this story at Slashdot.
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Using IPv6 On Debian Etch
This document describes how you can configure a Debian Etch system for IPv6 so that a) it can connect to other IPv6 hosts and b) other IPv6 hosts can connect to it. IPv6 should become more important in the future as recent estimates assume that there will be no more IPv4 addresses left by 2010 or 2011. Therefore it's time time to learn IPv6.
Each new Ubuntu release has raised the standard by which other Linux distros are judged. With the new Ubuntu 8.10 Intrepid Ibex, the focus is on mobility and 3G network support. I found Intrepid to be a fast and stable release, yet I experienced some minor issues that keep it from absolute perfection.
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Enabling Compiz Fusion On An Ubuntu 8.10 Desktop (NVIDIA GeForce FX 5200)
This tutorial shows how you can enable Compiz Fusion on an Ubuntu 8.10 (Intrepid Ibex) desktop (the system must have a 3D-capable graphics card - I'm using an NVIDIA GeForce FX 5200 here). With Compiz Fusion you can use beautiful 3D effects like wobbly windows or a desktop cube on your desktop.
System administrators need to keep an eye on their servers to make sure things are running smoothly. If they find a problem, they need to see when it started, so investigations can focus on what happened at that time. That means logging information at regular intervals and having a quick way to analyse this data. Here's a look at several tools that let you monitor one or more servers from a Web interface.
An anonymous reader writes "Phoronix has a new article out on Wayland: A New X Server For Linux. One of Red Hat's engineers has started writing a new X11 server around today's needs and to eliminate the cruft that has been in this critical piece of free software for more than a decade. This new server is called Wayland and it is designed with newer hardware features like kernel mode-setting and a kernel memory manager for graphics. Wayland is also dramatically simpler to target for in development. A compositing manager is embedded into the Wayland server and ensures 'every frame is perfect' according to the project's leader."
Read more of this story at Slashdot.
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How To Install VMware Server 2 On A Fedora 9 Desktop
This tutorial provides step-by-step instructions on how to install VMware Server 2 on a Fedora 9 desktop system. With VMware Server you can create and run guest operating systems ("virtual machines") such as Linux, Windows, FreeBSD, etc. under a host operating system. This has the benefit that you can run multiple operating systems on the same hardware which saves a lot of money, and you can move virtual machines from one VMware Server to the next one (or to a system that has the VMware Player which is also free).
Backing up data can be difficult, especially when you only want to copy files that changed since the last backup. It can be even more troublesome when you have to remember to start the process manually,or you have to delete old backups to make room for new ones. Because of these difficulties, some people decide not to back up data at all, and feel the pain when they accidentally delete the wrong file or their system crashes. TimeVault is a backup utility for Ubuntu that addresses these problems.
bmsleight writes "The Dutch Ministry of Finance organized an architecture competition to design not a building, but rather the new 5-Euro commemorative coin. The theme was 'Netherlands and Architecture'. The winning design was made 100% with free software, mainly Python, but also including The Gimp, Inkscape, Phatch, and Ubuntu. The design is amazing — the head of Queen Beatrix is made up of the names of architects based on their popularity in Yahoo searches (rendered in a font of the artist's own devising). In the end the artist, Stani Michiels, had to collaborate closely on location with technicians of the Royal Dutch Mint, so all the last bits were done on his Asus Eee PC. Soon, 350,000 Dutch people will use and enjoy the fruits of free software."
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IBM and Sun Microsystems deliver a prototype of OpenSolaris running on the IBM System z mainframe, with the help of a consultancy named Sine Nomine Associates (SNA).
- IBM and Sun Microsystems have made good on a promise to make open source code from the OpenSolaris operating system available on IBM System z mainframes. Enlisting the help of Sine Nomine Associates (SNA), a consultancy out of Ashburn, Va., IBM and Sun on Nov. 3 announced the availability of OpenSo...
Ever wondered what takes your Linux box so long to boot up? You can see for certain with the Bootchart package. Bootchart logs the entire startup process and produces a clean, graphical representation of its results suitable for everything from troubleshooting to good old-fashioned bragging rights.
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The Perfect Desktop - Ubuntu 8.10 (Intrepid Ibex)
This tutorial shows how you can set up an Ubuntu 8.10 (Intrepid Ibex) desktop that is a full-fledged replacement for a Windows desktop, i.e. that has all the software that people need to do the things they do on their Windows desktops. The advantages are clear: you get a secure system without DRM restrictions that works even on old hardware, and the best thing is: all software comes free of charge.
ruphus13 writes "Here's another example of 'German Engineering' — The Foreign Ministry in Germany is migrating all of its 11,000 desktops to GNU/Linux and other open source applications. According to the article, 'this has drastically reduced maintenance costs in comparison with other ministries. "The Foreign Ministry is running desktops in many far away and some very difficult locations. Yet we spend only one thousand euro per desktop per year. That is far lower than other ministries, that on average spend more than 3000 euro per desktop per year ... Open Source desktops are far cheaper to maintain than proprietary desktop configurations," says Rolf Schuster, a diplomat at the German Embassy in Madrid and the former head of IT at the Foreign Ministry ... "The embassies in Japan and Korea have completely switched over, the embassy in Madrid has been exclusively using GNU/Linux since October last year", Schuster added, calling the migration a success.' The Guardian has additional coverage of the move."
Read more of this story at Slashdot.
nerdyH writes "Motorola will ditch its MotoMAGX Linux stack and UIQ Symbian stack in favor of Google's Android Linux/Java stack and Windows Mobile 6.5 and 7, it announced today. The news comes after five years selling millions of Linux phones in Asia, and after a year during which many of Motorola's top US phones used the homegrown Linux stack. Motorola's current Linux phones in the US include the RAZR2 v8, E8, EM30, U9, ZN4, and ZN5." This also comes alongside news that Motorola's financial hardships are causing them to cut 3,000 jobs. It also puts into perspective their recent plans to hire hundreds of Android developers.
Read more of this story at Slashdot.
Support for transparent decompression of files on optical media has been part of the Linux kernel since version 2.4.14. Here's how you can take advantage of this support when you burn your own optical media by using the mkzftree tool and the -z option to genisoimage. These commands compress files using zlib, which uses the same algorithm as gzip. Using the transparent compression Rock Ridge extension can allow you to fit much more data onto a DVD.
If you want to keep tabs on your deadlines, you don't need a fancy project management application -- often, a simple spreadsheet can do the job. To see how, let's create a spreadsheet that tracks task deadlines, shows the current status of each task, and highlights scheduling conflicts. In the process we'll learn a few useful Calc techniques.
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