Unix and
Security

My general computer / network security page
How to harden a Linux or BSD installation
How to break into Linux (and how to prevent this)
Analysis of multiple intrusions into a poorly configured Linux system
How to set up and use SSH
How to create and install keys and certificates for a secure Apache web server
How to make sendmail use SSL/TLS whenever possible
How to password-protect Apache web pages
Integrating a UNIX client into a Kerberos realm controlled by a Windows Active Directory server.

Unix/Linux
Administration

Installation
and booting
Installing CentOS Linux on an Alpha
How Linux Boots
X Configuration Issues
Package management and service control Package Management and Service Control on Linux and BSD — A Phrase Book for RPM/yum/urpmi, apt-get/dpkg, and pkg_*
How to Add MP3 Support to Red Hat, CentOS, and Fedora
Kernel
building
How to Build Linux Kernels
Building Linux kernels on Alphas
Exploring the Linux Kernel
How to Build OpenBSD Kernels
Essential
skills
UNIX/Linux Command Fundamentals and the File System
TCP/IP Configuration Commands for UNIX/Linux and Mac OS X (and Windows and Cisco IOS)
How to Use vi (or, better yet, vim), an essential skill sadly unknown by many
How to Use FTP, an essential skill sadly unknown by many
Other useful pages on other sites LOTS of details on ext3fs, including recovering deleted files (someone else's page)
IBM Technical Library "Anatomy of..." articles on Linux: loadable kernel modules, file systems, flash devices, SELinux, real-time Linux architectures, SCSI, networking stack, etc.

OpenBSD

Running OpenBSD on a Dell Inspiron 1000 laptop:
Compiling Software on OpenBSD
How to Build OpenBSD Kernels

Virtualization

Virtualization and Clustering (or, Multi-Computing)
How to install the QEMU emulator and Linux on a USB device, so you can run Linux within a window on a hosting maching running Linux or BSD or Windows
How to install and run Windows within the QEMU emulator on an OpenBSD or Linux desktop

Other Varied
Unix Topics

Unix/Linux tips and tricks
How to analyze Apache logs in detail with basic UNIX commands.
Digital Cameras, Linux, and BSD
Hardware: EIDE / PATA / SATA / USB / Floppy cable pinouts
USENIX, The Advanced Computing Systems Association, has made all their conference proceedings available to everyone: http://www.usenix.org/publications/library/proceedings/
An especially useless Windows error message

Windows,
if we must

Installing Office 2007 on Windows XP — Dealing with: "The specified program requires a newer version of Windows"
Fixing the PATH on Windows so you can easily run useful software that you had to add

Oddities

UNIX the Supermodel
stupid microsoft
UNIX the Fire Extinguisher
Linux the Laundry Detergent
The Gallery of Crash Dump Screens
The Gospel of Tux
Biblical Unix
What might be Windows Vista source code

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