Linux

Dear nixCraft,

I carry my Linux powered laptop just about everywhere. How do I protect my private data stored on partition or removable storage media against bare-metal attacks where anyone can get their hands on my laptop or usb pen drive while traveling?

Sincerely,

Worried about my data.

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Do you need a simple open source cross-platform command line tool that converts web pages and HTML to a PDF file? Look no further, try wkhtmltopdf.

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Oneko is a little fun app. It will change your cursor into mouse and creates a little cute cat and the cat start chasing around your mouse cursor. The word “neko” means “cat” in Japanese and it was originally written by a Japanese author as a Macintosh desktop accessory.

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Slackware version 14.0 has been released and available for download from the official project website. This updated version brings many enhancements, including Xfce 4.10.0, KDE 4.8.5, and Linux kernel version 3.2.29.

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

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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.

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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.

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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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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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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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