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Debian

Chrooted SSH/SFTP Tutorial (Debian Etch)

Post date: September 7, 2007, 22:09 Category: Security Views: 4644 Comments
Tutorial quote: This tutorial describes two ways how to give users chrooted SSH access. With this setup, you can give your users shell access without having to fear that they can see your whole system. Your users will be jailed in a specific directory which they will not be able to break out of. The users will also be able to use SFTP in their chroot jails.
Unix+clones

Create your own init.d scripts

Post date: November 11, 2007, 05:11 Category: System Views: 8868 Comments
Tutorial quote: Have a Linux executable that you would like to run as a daemon? Making your own init.d scripts can be a bit tricky, but I can help you out.

The directory /etc/init.d/ is a location on a Linux file system that contains scripts for changing init states.

For details on Linux run levels look here.

The run levels that are most important to us are 2, 3 and 5.

VERY basic sample init.d script (Replace italics respectively):
Linux

How to suspend and hibernate a laptop under Linux

Post date: June 7, 2006, 20:06 Category: Hardware Views: 5509 Comments
Tutorial quote: Many people prefer working with laptops instead of desktops for the flexibility they offer. Some of them would also like to switch to a free and open source operating system like GNU/Linux and have their laptop do all the things that proprietary OSes offer, such as suspending their laptops. Several distributions try to make this work out of the box, but knowing what's under the hood always comes in handy, particularly when something goes wrong and needs fixing. Let's take a look at how to suspend and hibernate your laptop under Linux.
Ubuntu+Studio

The Perfect Desktop - Ubuntu Studio 11.10

Post date: October 25, 2011, 09:10 Category: Desktop Views: 20583 Comments
Tutorial quote: This tutorial shows how you can set up an Ubuntu Studio 11.10 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. Please note that Ubuntu Studio 11.10 uses Xfce as the default desktop environment (instead of GNOME).
Ubuntu

Enabling Compiz Fusion On An Ubuntu 11.04 Desktop (With The Unity Desktop)

Post date: July 3, 2011, 18:07 Category: Desktop Views: 3597 Comments
Tutorial quote: This tutorial shows how you can enable Compiz Fusion on an Ubuntu 11.04 (Natty Narwhal) desktop with the Unity interface (the system must have a 3D-capable graphics card which I assume it has because otherwise Unity wouldn't start, and GNOME would be used instead). With Compiz Fusion you can use beautiful 3D effects like wobbly windows or a desktop cube on your desktop.
Fedora

Watching Your Power Consumption With Powertop On Fedora 7

Post date: October 1, 2007, 10:10 Category: Miscellaneous Views: 3662 Comments
Tutorial quote: Powertop is a command-line tool released by Intel that shows you the power consumption of the applications running on your system. It works best on notebooks with Intel mobile processors and can help you find out the programs that put a strain on your notebook battery. It requires kernel 2.6.21 or newer with tickless idle enabled (CONFIG_NO_HZ) (which is currently available for 32-bit kernels only). Fedora 7 comes with a 2.6.21 kernel by default, so we can use Powertop on it.
Debian

Xen Cluster Management With Ganeti On Debian Etch

Post date: September 16, 2007, 21:09 Category: Miscellaneous Views: 3815 Comments
Tutorial quote: Ganeti is a cluster virtualization management system based on Xen. In this tutorial I will explain how to create one virtual Xen machine (called an instance) on a cluster of two physical nodes, and how to manage and failover this instance between the two physical nodes.
Debian

Xen Cluster Management With Ganeti On Debian Lenny

Post date: March 3, 2009, 12:03 Category: Installing Views: 4573 Comments
Tutorial quote: Ganeti is a cluster virtualization management system based on Xen. In this tutorial I will explain how to create one virtual Xen machine (called an instance) on a cluster of two physical nodes, and how to manage and failover this instance between the two physical nodes.
Ubuntu

Optical Character Recognition With Tesseract OCR On Ubuntu 7.04

Post date: August 28, 2007, 20:08 Category: Desktop Views: 3795 Comments
Tutorial quote: This guide describes how to set up Tesseract OCR on Ubuntu 7.04. OCR means "Optical Character Recognition". The resulting system will be able to convert images with embedded text to text files. Tesseract is licensed under the Apache License v2.0.
OpenSUSE

Qps Visual Process manager (X11 ps) in openSUSE

Post date: January 21, 2009, 07:01 Category: Software Views: 3749 Comments
Tutorial quote: Qps Visual Process Manager is an X11 version of “top” or “ps” that displays processes in a window and lets you sort and manipulate them. It displays some general system information, and many details about current processes (such as the TCP/UDP sockets in use by a process). Qps runs on Linux and Solaris.
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