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Back to Basics: Unix File Permissions
The most basic, yet important part of mastering Unix is to fully understand the nuances of file permissions. Tools exist to manage permissions easily, but true enlightenment and quick troubleshooting...
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Networking 101: Subnetting – Slice Up 32-bits
Welcome to networking 101, edition two. This time around we’ll learn about subnets and CIDR, hopefully in a more manageable manner than some books present it. But first, let’s get one thing straight:...
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Back To Basics: Unix Differences in Performing Tasks
It has often been said that a skilled sysadmin can quickly come up to speed with any Unix system in a matter of hours. After all, the underlying principals are all the same. Fortunately, this is...
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Back to Basics: Unix System Stats Utilities
Unix and Linux systems have forever been obtuse and mysterious for many people. They generally don’t have nice graphical utilities for displaying system performance information; you need to know how to...
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Networking 101: More Subnets, and IPv6
What’s the point of creating subnets anyways? How do I remember those strange looking subnet masks? How the heck does this work with those crazy looking IPv6 addresses? This edition of Networking 101...
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Networking 101: Understanding Layers
Continuing our journey, it’s time to take a trip up the OSI Reference Model, and learn what this mysterious thing is all about. The network stack is of great significance, but not so much that it’s the...
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Understanding Fibre Channel
As we dive deeper into SAN technology, it’s Fibre Channel’s turn to be examined. FC is the underpinning of all SAN technologies these days, as it won the protocol war roughly 25 years ago. FC wouldn’t...
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