Month: June 2012

How to Backup Linux? 15 rsync Command Examples

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rsync stands for remote sync.

rsync is used to perform the backup operation in UNIX / Linux.

rsync utility is used to synchronize the files and directories from one location to another in an effective way. Backup location could be on local server or on remote server.


LPI Certification Self-Study Guide

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The LPI Self-Study Guide is intended to provide a quick and inexpensive method for experienced Linux users to prepare for Linux Professional Institute (LPI) certification exams 101 and 102. The LPI Self-Study Guide is not a beginner’s course and makes no attempt to teach any of the subject matter in detail. Instead the study guide provides a structured method for quickly reviewing the knowledge required by the exam objectives. Links to external references and documentation are provided for key terms and concepts and there are practice questions with answers at the end of each chapter.

How to improve ZFS performance

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A great article written by by Derrick from ICESQUARE worthy to be bookmarked if you are a ZFS and NAS enthusiast like me!

Linux: Check Ram Speed and Type

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How do I check RAM speed and type (line DDR or DDR2) without opening my computer? I need to purchase RAM and I need to know the exact speed and type installed. How do I find out ram information from a shell prompt?

You need to use biosdecode command line utility. Dmidecode is a tool or dumping a computer’s DMI (some say SMBIOS) table contents in a human-readable format. The output contains a description of the system’s hardware components, as well as other useful pieces of information such as serial numbers and BIOS revision. This command works under Linux, UNIX and BSD computers.

Linux Fundamentals, Part 1

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Welcome to “Linux fundamentals,” the first of four tutorials designed to prepare you for the Linux Professional Institute’s 101 exam. In this tutorial, we’ll introduce you to bash (the standard Linux shell), show you how to take full advantage of standard Linux commands like ls, cp, and mv, explain inodes and hard and symbolic links, and much more. By the end of this tutorial, you’ll have a solid grounding in Linux fundamentals and will even be ready to begin learning some basic Linux system administration tasks. By the end of this series of tutorials (eight in all), you’ll have the knowledge you need to become a Linux Systems Administrator and will be ready to attain an LPIC Level 1 certification from the Linux Professional Institute if you so choose.

This particular tutorial (Part 1) is ideal for those who are new to Linux, or those who want to review or improve their understanding of fundamental Linux concepts like copying and moving files, creating symbolic and hard links, and using Linux’ standard text-processing commands along with pipelines and redirection. Along the way, we’ll share plenty of hints, tips, and tricks to keep the tutorial meaty and practical, even for those with a good amount of previous Linux experience. For beginners, much of this material will be new, but more experienced Linux users may find this tutorial to be a great way of rounding out their fundamental Linux skills.

For those who have taken the release 1 version of this tutorial for reasons other than LPI exam preparation, you probably don’t need to take this one. However, if you do plan to take the exams, you should strongly consider reading this revised tutorial.,_Part_1