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How To Remotely Shut Down Windows XP Computers From A Linux Server
As a budget cutback, our school administrators asked us to shutdown all non-essential classroom computers at night to save electricity. I teach Linux in a classroom that has a Dell Poweredge 2850 Red Hat Enterprise Linux (RHEL5) server and 29 Dell Optiplex 745 student lab computers running Microsoft Windows XP SP3 as the host operating system and VMWare Server to provide virtual Linux machines for our classes. I researched on the Internet for the best solution to remotely shutdown the student lab computers at night. I was not able to find one post or how-to that completely answered my questions, but I was able to piece together a solution. In an effort to document this project and help others with similar needs, here are my notes on the project.
How To Configure SSH Keys Authentication With PuTTY And Linux Server In 5 Quick Steps
This tutorial explains how you can replace password-based SSH authentication with key-based authentication which is more secure because only the people that own the key can log in. In this example, we're using PuTTY as our SSH client on a Windows system.
Creating Portable DiskSafes With LoopbackFS And LVM Snapshots
This is the "DiskSafe" idea used to store backups of server data. This could be used to replace physical tape volume and still provide portablility. I have found pieces of this information around the Internet but nothing putting it all together.
Record "DreamBox dm 500 S" On Linux Over HTTP Stream
This "short HowTo" shows how to watch, record and convert TV shows on-the-fly from "DreamBox" using the "HTTP" streaming service on a PC runing Linux OS. The "DreamBox" is a satellite receiver that has a NIC and you can access it using a web interface to watch and control it.
Management Of Backups With DAT Devices
I had the chance to use a DAT device (an old HP SuperStore DAT24) to make copy on tapes. I didn't want to install any new software to manage that task. This guide can be considered a first step to know how the thing can work. Then, everybody can customize it according to the personal needs.
Adding Date And Time To Your Bash History
This is a quick but handy addon (RedHat/CentOS) to enhance your bash history (bash > 3.0). It comes in handy particularly if there are multiple people maintaining a given server (so you can see when a command was performed) or even if you are the sole maintainer, but can't remember exactly when you did or changed something.
Generating Website Statistics With Piwik, An Open-Source, Google Analytics-Like Web Analytics Tool
This guide explains how you can install and use Piwik for generating website analytics. The reports generated by Piwik are similar to the ones generated by Google Analytics. Piwik is an Open-Source (GPL) tool that you can download and host on your own servers which means you are in full control over your data. In addition to that, Piwik's functionality can be extended by plugins.
Learning Spam With SpamAssassin And All Of Your ISPConfig Clients [ISPConfig 2]
This is a quick way of learning spam from all of your ISPConfig clients by running a quick and simple command. Please note that this is for ISPConfig 2, not 3.
How To Install The WiKID Strong Authentication System On Slackware
Tested on Slackware 12.2, 126.96.36.199-grsec, PostgreSQL 8.3.6, postgresql-8.3-604.jdbc4. Note: Some of the configuration scripts included with WiKID are designed for Redhat and friends, several steps in this guide focus on modifying these scripts for Slackware as well as working around some of them.
A Short Introduction To Cron Jobs
This article is a short introduction to cron jobs, their syntax, and how to set them up. A cron job is a scheduled task that is executed by the system at a specified time/date.
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