Ubuntu blogs

Saving Power on Intel Hardware Using Powertop

PowerTOP is a Linux tool that finds the software component(s) that make your laptop use more power than necessary while it is idle. As of Linux kernel version 2.6.21, the kernel no longer has a fixed 1000Hz timer tick. This will (in theory) give a huge power savings because the CPU stays in low power mode for longer periods of time during system idle.

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ssh on multiple servers Using cluster ssh

Cluster SSH opens terminal windows with connections to specified hosts and an administration console. Any text typed into the administration console is replicated to all other connected and active windows. This tool is intended for, but not limited to, cluster administration where the same configuration or commands must be run on each node within the cluster. Performing these commands all at once via this tool ensures all nodes are kept in sync.

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Membuat Shortcut di Ubuntu Feisty

Sebenarnya saya sendiri baru 2 bulan migrasi ke Ubuntu, tapi mudah2an tulisan ini bisa sedikit membantu buat yang bingung... (kayak saya) Berawal dari user Ubuntu ditempat saya yang kesulitan menggunakan OpenOffice.org maka saya mencoba menginstall Office2000 melalui wine. Instalasi berjalan lancar, dari download wine sampai install Office2000 serta running via Wine, tetapi selanjutnya saya perlu shortcut untuk memudahkan user, setelah coba2.. kira2 begini hasilnya: - buat file dengan extension .sh (dari terminal vi word.sh ) - simpan file tadi di subdirektori /bin - isi filenya kira2 seperti ini: #/bin/sh cd ~/.wine/drive_c/Program\ Files/Microsoft\ Office/Office wine winword.exe - terus, agar bisa langsung execute... dari teminal ketik: chmod +x word.sh - selanjutnya buat deh Launcher-nya (Type Application, Name Word, Command-nya di browse ke /bin 'word.sh' tadi, sedangkan Icon dan Comment sih bebas2 aja...) terus OK deh... Selamat Mencoba!

Howto Setup a Remote Calendar using WebDAV with Mozilla Sunbird

Mozilla Sunbird® is a cross-platform calendar application, built upon Mozilla Toolkit. Our goal is to bring Mozilla-style ease-of-use to your calendar, without tying you to a particular storage solution.

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Working with vast raster images: NIP2

nip2 is a graphical front end to the VIPS package.VIPS is an image processing system designed with efficiency in mind. It is good with large images (images larger than the amount of RAM in your machine), and for working with colour. It can perform many image manipulation tasks much faster than other packages such as ImageMagick and the GIMP and includes some special features such as creating single mosaic" images from multiple parts.

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Creating Your Own Custom Ubuntu 7.10 Or Linux Mint 4.0 Live-CD With Remastersys

This guide shows how you can create a Live-CD from your Ubuntu Gutsy Gibbon or Linux Mint 4.0 system with a tool called remastersys. Remastersys is available in the Linux Mint romeo repository. You can customize your Ubuntu/Linux Mint system and then let remastersys create an iso image of it which you can then burn onto a CD/DVD. http://www.howtoforge.com/ubuntu-linux-mint-livecd-with-remastersys

New Guy

Just received my disks and will be installing ubuntu this afternoon.  Am new to the os and could use all the help I can get.  Can you recommend a publication, any publication, to help me get started and something I can use as a future reference?  Thank You in advance.rwlange47

Using KVM On Ubuntu 7.10 (Gutsy Gibbon)

In this HowTo I will explain how to install and use KVM for running your services in virtual machines. KVM (Kernel-based Virtual Machine) is a Linux kernel virtualization technique that provides full virtualization by using Intel VT (Vanderpool) or AMD-V (Pacifica). http://www.howtoforge.com/using-kvm-on-ubuntu-gutsy-gibbon

How To Set Up Software RAID1 On A Running System (Incl. GRUB Configuration) (Debian Etch)

This guide explains how to set up software RAID1 on an already running Debian Etch system. The GRUB bootloader will be configured in such a way that the system will still be able to boot if one of the hard drives fails (no matter which one). http://www.howtoforge.com/software-raid1-grub-boot-debian-etch

Enabling Compiz Fusion On An Ubuntu 7.10 Desktop (NVIDIA GeForce FX 5200)

This tutorial shows how you can enable Compiz Fusion on an Ubuntu 7.10 (Gutsy Gibbon) desktop (I am using an NVIDIA GeForce FX 5200 graphics card). With Compiz Fusion you can use beautiful 3D effects like wobbly windows or a desktop cube on your desktop. http://www.howtoforge.com/compiz-fusion-ubuntu-gutsy-gibbon-nvidia-geforce-fx-5200

How to Install the Eternity Screensaver in Ubuntu

The Eternity Screensaver plays animations of ray-traced scenes which took days or even weeks to generate. The reasoning is that these clips should look more impressive than anything which can be generated on-the-fly.

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Quick PDF sorting and searching: SWISH++

SWISH++ is a Unix-based file indexing and searching engine (typically used to index and search files on web sites). It was based on SWISH-E although SWISH++ is a complete rewrite.

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Adding And Updating SpamAssassin Rulesets With RulesDuJour

This article explains how you can download additional SpamAssassin rulesets resp. automatically update these rulesets with a shell script called RulesDuJour. These additional rulesets can increase your spam recognition rate dramatically. Most of the rulesets that RulesDuJour supports can be found on the SA Rules Emporium web site. http://www.howtoforge.com/adding-and-updating-spamassassin-rulesets-with-rulesdujour

Virtual Users And Domains With Postfix, Courier And MySQL (Ubuntu 7.10)

This document describes how to install a Postfix mail server that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I will 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 will 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.

Build a Six-headed, Six-user Linux System

A Multi-Seat Linux Box: This tutorial shows how to build a multi-head, multi-user Linux box using a recent distribution of Linux and standard USB keyboards and mice. Xorg calls this arrangement a "multi-seat" system.

  • Advantages of a Multi-Seat System: The advantages of multi-seat systems in schools, Internet cafes, and libraries include more than just saving money. They include much lower noise pollution, much less power consumption, and lowered space requirements. For many applications, power and noise budgets are as important as initial cost.
  • read more : http://linuxgazette.net/124/smith.html