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The pv command allows you to see the progress of data through a pipeline. It provides the following info:

  1. Time elapsed
  2. Percentage completed (with progress bar)
  3. Current throughput rate
  4. Total data transferred
  5. ETA
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Disk cloning is nothing but the process of copying the contents of one hard disk (or partition) to another disk or to an "image" file. I make backup regularly using rsnapshot tool, but I also clone my hard disk once or twice a month. This option allows me to restore my OS and installed software quickly. Linux comes with various utilities for performing disk cloning. In this post, I'm going to list my favourite open source disk cloning softwares that has saved my butt multiple times.

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Process identifier (PID) is a number used by Linux / Unix kernels (and Windows operating systems) to identify a process. Usually, new processes are created using the fork() system call. Each PID (or so called tasks) can be monitored under Linux. In this quick tutorial, I will explain how to use the pidstat command for monitoring individual tasks currently being managed by the Linux kernel.

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Amazon web services (AWS) launched a new service called Amazon Glacier. You can use this service for archiving mission-critical data and backups in a reliable way in an enterprise IT or for personal usage. This service cost as low as $0.01 (one US penny, one one-hundredth of a dollar) per Gigabyte, per month. You can store a lot of data in various geographically distinct facilities and verifying hardware or data integrity, irrespective of the length of your retention periods. The first thing comes to mind is, the Glacier would be a good place for a backup off family photos and videos from my local 12TB nas.

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Mozilla Firefox version 11.x+ has support for 3D view. It is a WebGL based website visualization tool that highlights page structure. You can see relationship between your code and the page output by stacking elements as they are nested in the DOM and lets you see elements that are hidden or off the page. You can zoom in and out, rotate and pan the view to see the page from any angle that is helpful to you. In this blog post I will explain how to enable 3D view on X11. Please note that the 3D view is not for your daily browsing needs. It is useful for finding out bugs such as nesting issues or even XSS vulnerabilities. Personally, I use 3D view as a tool to understand divs, spans, and other elements on the page.

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Everything is a file under Linux and ls* and friends can help you to dig out more information from the system than you originally thought.

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Avant Window Navigator (AWN or Awn) is a fully customisable dock-like bar for the GNOME desktop environment.This quick blog post explains how to install and use Avant Window Navigator (AWN) under Debian Linux 6.x+.

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Tomorrow is a SysAdmin appreciation day. The holiday exists to show appreciation for the work of sysadmins and other IT professionals. It is celebrated on the last Friday in July i.e. Friday, July 27, 2012, is the 13th annual System Administrator Appreciation Day.

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Gabe Newell is the co-founder and managing director of the video game development and online distribution company called Valve Corporation. He want to port 2500 game titles on Linux. But, why? First, Gabe hates Windows 8. He recently made a rare appearance last night at Casual Connect, an annual videogame conference in Seattle.

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Dell has announced that it has updated its business grade mobile workstation laptop line with new Intel Ivy Bridge CPUs, graphics card and comes with preloaded with RHEL 6. Theses systems are designed as replacement for desktop workstations and targeted at professionals, engineers, scientists, and users who need powerful hardware on the move for advanced analysis, engineering, manufacturing and design applications.

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