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How to configure your SCSI or USB scanner to work with SANE/XSANE from your regular user account
This article shows how you can make your scanner (SCSI or USB) work with SANE/XSANE from a normal user account without getting permission errors.
Useful Commands For The Linux Command Line
This short guide shows some important commands for your daily work on the Linux command line.
Setting the SUID/SGID bits: Giving a program YOUR permissions when it runs
Normally, when a program runs under Linux, it inherits the permissions of the user who is running it, thus if I run a program under my account, the program runs with the same permissions that I would have if that program were me. Thus, if I cannot open a certain file, the program I am running also cannot open the file in question. If I set the SUID or SGID bit for a file, this causes any persons or processes that run the file to have access to system resources as though they are the owner of the file.
Set Up A Fileserver For Small/Medium Enterprises With SME Server 7.1
This tutorial shows how to set up a fileserver for small and medium enterprises with SME Server 7.1. SME Server is an open-source Linux server distribution (released under the GPL) based on CentOS that can turn a computer into a gateway, firewall, fileserver, printserver, mailserver (including webmail), etc. In this article we will focus on the fileserver aspect of SME Server.
Step-by-step OpenLDAP Installation and Configuration
This tutorial describes how to install and configure an OpenLDAP server and also an OpenLDAP client.
Setting up a serial console
This tutorial will show you how to set up a serial console on a Linux system, and connect to it via a null modem cable. This is quite useful if your Linux server is in a headless configuration (no keyboard or monitor), as it allows you to easily get a console on the system if there are any problems with it (especially network problems, when SSH is not available). In the end, the GRUB menu will appear over the serial link, as will the bootup messages (output when booting the system). I'm using Debian Etch on the server and Ubuntu Edgy on my client, although this should work on any Linux distribution.
Install and Configure Auth Shadow on Debian/Ubuntu
Auth Shadow or mod-auth-shadow is a module for apache (and apache2, sort of) that enables authentication against /etc/shadow. The benefits being that any system user with a password can be authenticated for web_dav, subversion or simply an https server. The only other way to do this is with PAM. That method is dangerous because the apache user (www-data in my case) must be able to read /etc/shadow. Obviously, not a good idea. Auth Shadow accomplishes this safely by using a intermediate program called validate. This works because validate can be owned by root but executable by everyone. In the event that your server is compromised through apache, your password file will not be readable.
Installing Multiple OS's Without A Floppy/CD/DVD/Etc.
This article explains how I managed to install over 50 various
operating systems on my computer (one hard drive) without having to burn
the distro ISO to disk to boot from. (No floppy, usb, cd, dvd, etc. needed!) The final result after some fun experimenting, is when I boot, I have a
cool grub boot screen come up with the option to boot into whatever OS
I want, this is handy for multiple reasons.
Replacing A Failed Hard Drive In A Software RAID1 Array
This guide shows how to remove a failed hard drive from a Linux RAID1 array (software RAID), and how to add a new hard disk to the RAID1 array without losing data.
Modify Your Partitions With GParted Without Losing Data
This article shows how you can modify the partitioning of your Linux system with GParted (Gnome Partition Editor) without losing data. This includes resizing partitions (enlarging and shrinking), moving partitions on the hard drive, creating and deleting partitions, and even modifying filesystem types. GParted is a free partition editor available as a desktop program and also as a Live-CD. It supports the following filesystems: ext2, ext3, fat16, fat32, hfs, hfs+, jfs, linux-swap, reiserfs, reiser4, ufs, xfs, and even ntfs (Windows).
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