PUBLIC MARKS from solrac with tags ubuntu & administration

Amaze your friends with cool vi tips and tricks that will improve the efficiency of your file editing. This article takes you through ten of the less well-known vi commands that should form part of any serious vi user's toolkit.

Learn how to download and install a Ubuntu image and then go through some basic shell commands to help you navigate through the Linux environment. This is part 1 of a 4 part demo series to show you how to implement a solution stack (Rational Application Developer, WebSphere Application Server, and DB2 Express-C) on Ubuntu Linux, as well as how to integrate them in a Java application.

Modern UNIX systems provide a number of different tools to capture the text-oriented interaction between a user and a specific program and to capture graphical screens and single windows. This article focuses on different ways to keep a record of the interaction between a user and a command-line application.

Learn how to create and manage hard and symbolic links to files on your Linux system. Explore the differences between hard and soft, or symbolic, links and the best ways to link to files, as opposed to copying files.

This article explores the Hadoop framework, including its fundamental elements, such as the Hadoop file system (HDFS), and node types that are commonly used. Learn how to install and configure a single-node Hadoop cluster, and delve into the MapReduce application. Finally, discover ways to monitor and manage Hadoop using its core Web interfaces.

A recent addition to Linux's impressive selection of file systems is Ceph, a distributed file system that incorporates replication and fault tolerance while maintaining POSIX compatibility. Explore the architecture of Ceph and learn how it provides fault tolerance and simplifies the management of massive amounts of data.

This article examines the implications of 4KB-sector disks, including benchmark tests illustrating the likely real-world effects on some common Linux file systems. As disks with 4096-byte sectors become more common throughout 2010 and beyond, strategies for coping with these new disks will become increasingly important.

An interesting change in the 2.6.32 kernel is Kernel Shared Memory (KSM). KSM allows the hypervisor to increase the number of concurrent virtual machines by consolidating identical memory pages. Explore the ideas behind KSM (such as storage de-duplication), its implementation, and how you manage it.

learn how to use inotify functions for a simple monitoring app. Download the sample code and Use inotify when you need efficient, fine-grained, asynchronous monitoring of Linux file system events. Use it for user-space monitoring for security, performance, or other purposes.

If you think streams and pipes make a Linux expert sound like a plumber, here's your chance to learn about them and how to redirect and split them. This article grounds you in the basic Linux techniques for redirecting standard IO streams. output to both stdout and a file.