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Open Source News

Read the latest Linux/Open source software news, analysis, opinions, tutorials and much more.

Linux / UNIX Desktop Fun: Interactive Aquarium

Fsh is an entertaining interactive desktop aquarium. It was created as an alternative to Gnome easter egg called "Free the fish".

remark Command: Highlight Any Text or Command Output Using Regular Expressions

The remark command is a little know tool that can be used to color syslog file as well as output of of programs such as ping, traceroute, and much more.

HowTo: Connect Two Wireless Router Wirelessly ( Bridge ) With Open Source Software

You can setup a wireless connection between two routers only so that it will link a wireless network to a wired network allowing you to bridge two networks with different infrastructure. You can find wireless access points products that offer either a "bridge" mode or a "repeater" mode. In this post I'm going to explain three popular open source choices that can be used for setting up a wireless bridge.

Firefox 15 Released With Silent, Background Updates and Opus Audio Support

Firefox version 15 has been released and fixes major issue related to add-on memory leaks. It also includes support for the new Opus audio format and includes a new feature called silent updates.

5 Linux / Unix Commands For Connecting To The Serial Console

Most embedded Linux / BSD systems such as routers, servers and nas devices comes with console interface (serial port with RS-232). BIOS can uses this, and after boot BIOS screen I/O is redirected so that you can use the device. RS-232 is also used for communicating to headless server, where no monitor or keyboard is installed, during boot when operating system is not running yet and therefore no network connection is possible. You need to use a serial cable between your computer and embedded system or server. In this post I will cover five conman utilities used for serial communication under Linux / Unix / *BSD and Mac OS X.

Linux / Unix pv Command: Monitor Progress of Data Sent Via a Pipe

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

Top 6 Open Source Disk Cloning and Imaging Softwares

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.

Linux pidstat Command: Get Statistics For Individual Tasks / Process

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.

Linux Firefox X11: Turn On 3D View Button

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.

ls* Commands Are Even More Useful Than You May Have Thought

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.