Unix System Administrator's Resources:Many useful sources of information on Unix system administration.
Backup Central: Linux bare metal recovery: A description about how to backup data on Linux.
Doom as a tool for system administration: As I was listening to Anil talk about daemons spawning processes and sysadmins killing them, I thought, "What a great user interface!" Imagine running around with a shotgun blowing away your daemons and processes, never needing to type kill -9 again.
Fnord sysadmin resources: Resources for system administration. Mostly internet infrastructure and support systems. DNS, Mail, routing and security.
General UNIX discussion forum at Tek-Tips: General UNIX discussion technical support forums and mutual help system for computer professionals. Selling and recruiting forbidden.
GNU/Linux Command Line Tools Summary: This document is an attempt to provide a comprehensive summary of useful command line tools available to a GNU/Linux based operating system. It is a summary which can be used to learn about and how to use many of the tools available to a GNU/Linux based operating system.
Hubba's Unix resources: Various Administration notes for AIX, Linux and Solaris.
Learning Unix: Unix books and resources for programmers, systems administrators, users and students.
Linux administration: How-to's and tips on software installation, use and administration of Linux systems.
Linux System Administrators' Guide 0.6: An introduction to system administration of a Linux system for novices. Information in a simple format.
Linux System Resources: Megalinux.net is a growing database of resources for systadmins. These include documentation, links to other resources, tips and applications.
LiveFire Labs: UNIX System Administration Training - Hands-on Internet Lab: Learn Unix system administration online using a dedicated Unix system in our Internet Lab to complete hands-on exercises, including reboots. View a sample course module before registering.
Managed Technical Services adopted specially to Hosting Companies or dedicated server owners: YourServerAdmin.com provides Managed Technical Services adopted specially to Hosting Companies or dedicated server owners
MKS Software: Provider of Windows automation tools for system administration and development in a pure Windows or mixed UNIX/Linux and Windows environment.
OS-Services: Documentation for Linux servers such as Apache Web Server, Sendmail (Smtp Pop3 Mail), Wu-Ftpd, MySQL tutorial, administration and configuration, software for users.
RootPrompt -- Nothing but Unix: News and information for Unix Sysadmins
SAGE - Code of Ethics: Detailed code of ethics for Unix system administrators.
Storix System Backup Administrator for Linux: Complete Linux backup management and system recovery software for Linux. Provides complete backup management and the most flexible system recovery proeuct available for Linux.
SysAdmin Talk: Ask questions, give answers and discuss the daily routines of system administration.
Tariq Nazir's UNIX, Networking, Scripting Resources: A technical directory of links to help UNIX systems and network administrators. Tutorials, TCP/IP, perl, shell scripts, Oracle, and SQL.
Tru 64: Daily news, information, files, message board and more related to Compaq's Tru64 UNIX
Unix and Linux Solutions and Utilities: Parkridge specializes in customized solutions, system administration, systems integration and network security for Unix systems. Developers of Unix system administration utility products. As a consequence of supporting Unix systems for many years we have developed utilities that not only save time but also improve the functionality of Unix/Linux systems.
Unix Guru Universe: Largest UNIX System Administration Resource site, for beginners and gurus that are looking for UNIX sites on the internet.
Unix performance FAQ: Adrian Cockcroft, a performance specialist for Sun Microsystems, answers your Unix questions.
UNIX System Administration: FAQs, software, and links, with a Solaris emphasis
Unix System Administration: Looking for a Unix System Administrator Job? or If you are having some Unix and Linux related problem, please submit it to me.
UNIX Unleashed, System Administrator's Edition: Online book. Unix basics, shells, administration tasks.
USAIL: Unix system administration independent learning: USAIL is an online study resource which includes independent study modules, each with their own quiz, which takes approximately 1 hour. The site does not offer online UNIX certification, but it will provide you with other reference sources and a means to hone your skills as an administrator.
Usenet - comp.unix.admin FAQ: The Administrators starting point