HEATKEYS

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Provides Instruction Guides, How-Tos, Troubleshooting Tips and Tricks on Linux, Database, Hardware, Security, Web and Open Source for both Newbies and Geeks - TheGeekStuff by Ramesh Natarajan

- UNIX and Linux Forums - Learn UNIX, UNIX commands, Linux, Operating Systems, System Administration, Programming, Shell, Shell Scripts

The IBM corporate home page, entry point to information about IBM products and services

Linux blog by Vivek - Includes news, help, tutorials, programming, tips and how-to guides for Linux, UNIX, and BSD.

VMexplore is a technology blog that serves you with How-tos, troubleshooting tips and tricks on Linux,VMware,AIX,Cisco UCS, OpenStack, Cloud etc.. which every system Administrator can use to enhance their knowledge and improve their troubleshooting s...

The Linux Documentation Project is working towards developing free, high quality documentation for the Linux operating system. The overall goal of the LDP is to collaborate in all of the issues of Linux documentation.

A help and support forum for Ubuntu Linux.

Tips for a Debian GNU/Linux System Administrator.

LinuxQuestions.org offers a free Linux forum where Linux newbies can ask questions and Linux experts can offer advice. Topics include security, installation, networking and much more.

It is the place to ask Linux/ UNIX questions and get real answers from experienced Linux admins. Share knowledge, Help others!