How to assemble a PC – The Complete Guide

Recently I found a fantastic video showing how to assemble a pc on You Tube. Sharing it with you.

<span class="entry-utility-prep entry-utility-prep-cat-links">Posted in</span> assemble, hardware, installation, pc | Leave a comment

Create and View Hidden Files/Folders in Ubuntu Linux


Usually, System directories and files will be hidden in Linux.To view them, press Ctrl+H. Now you can see all the folders contained in the parent directory.Press Ctrl+H again to hide then

Before Pressing Ctrl+H

 After Pressing Ctrl+H

Note that all the hidden folders are started with a dot (.) symbol.
You can use this trick to make your own folder invisible. 

Just rename the folder such that the name starts with a “.” symbol.
Press Ctrl+H to make the folders listed/unlisted. 

The same method is applicable for files also. 
for example rename “Hello.txt” to “.Hello.txt”


<span class="entry-utility-prep entry-utility-prep-cat-links">Posted in</span> directory, file, folder, hide, invisible, show, tip, trick, ubuntu | Leave a comment

Things You don’t know about VLC Media Player


VLC is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as DVD, Audio CD, VCD, and various streaming protocols.

1. Play RAR files
VLC allows you to play videos zipped inside RAR files. VLC has the ability to play series of RAR files. You just have to load the beginning part like (.part001.rar ). VLC will automatically take the rest of the parts and play the entire file.Just select the RAR file and open with ->VLC. You can even play Uncompleted or currupted RAR files..!!

2. Play ISO image files
.iso files can be accessed and played by VLC player even if the Operating System does not supprt direct accessing of disk image files. VLC make use libcdio library to access .iso files.

3. Control aspect ratio
Using VLC, you can override the source aspect ratio. This is available both as a command line option and as an option in the Preference dialog in the graphical interface. The aspect ratio can be specified both in ratio format (16:9) or as a decimal number (1.33).

Command Line

When invoking VLC from the command line, use the option –aspect-ratio. For instance,
vlc –aspect-ratio 1:5

Graphical Interface

If using the graphical interface, the setting is In the Video section of the Preferences dialog. You may specify the aspect ratio in the field labeled “Source aspect ratio.”
Here is a list of the more common aspect ratios.

  • Fullscreen: 1.33 or 4:3
  • Widescreen: 1.78 or 16:9
  • Typical DVD: 1.85
  • Cinemascope: 2.35

3. Convert your files
You can convert your media files using VLC player..! VLC can also convert videos to formats it supports and one can also specify whether or not to use system codecs.
To convert simply go from Menubar to Media->Convert/Save. Choose your file with Add , and then press Convert/Save, choose your setting and destination and you are ready to convert your files.

4. Play anything You want
VLC player can play any common audio formats (OGG, MP3, WAV ,WMA….) and almost all kinds of video file formats, including rare file formats, without installing external codecs.  VLC player is an ideal replacement for even ITunes . That is to say you would never get the annoying notifications saying it ”your player needs a codec for MP4, FLAC or Raw DV…”! play anything you want!

5. Play videos in ASCII mode!
  You can play any video in ascii mode. To enable this mode, open VLC media player and click on Tools>Preferences. Open the section ‘Video’ section and under ‘Output’ select ‘Color ASCII art video output’ from the drop down menu. Save it. Now play any video file to enjoy the ASCII art.

6. Take Screenshots  of the video
With VLC  one can also take screenshots of videos, even during DVD playback.  To capture a snapshot go to Menubar->Video->Snapshot. 

7. Record videos and Live TV
With VLC, you can record videos during playback. For this first activate the advanced control panel by clicking View>Advanced Control. Now you can see the record button and by clicking on that, you can record the video. Click the button again to stop recording. (You can do the same for Live TV if you have a TV Tuner Card)

8. Rip DVDs
VLC includes a basic DVD ripper. You probably would never use it when there are better DVD rippers available, but it helps to know that you can in fact, get a decent quality DVD rip with VLC. To rip a movie follow these steps:

  • Go to the Media menu and choose Convert/Save. Click on the Disc tab.
  • Here you can adjust the Starting Position and rip only specific titles or chapters.
  • Enter file name making sure to end with .MPG, and start ripping.
  • Click Save

<span class="entry-utility-prep entry-utility-prep-cat-links">Posted in</span> application, cd, convert, download, dvd, free, freeware, iso, linux, live TV, mac, Mac OS, media player, open source, rar, record video, software, vlc, windows | 2 Comments

Harpia – A nice graphical wrapper for opencv applications

Harpia is a nice graphical wrapper for powerful opencv applications.
It can be used on both Windows and Linux.
The main goals of Harpia are

1 Development of a simple, useful graphic interface for vision systems. 

2 Development of a system for communication and monitoring of remote vision systems also based on high level graphic interface. 

3 Development of an environment for artificial intelligence learning based on computacional vision. 

4 Build an Open-Source and national system allowing the spread of knowledge inside the area of computacional vision. 
5 Allow the access to a high level quality control system based on computacional vision.

<span class="entry-utility-prep entry-utility-prep-cat-links">Posted in</span> computer vision, graphical wrapper, linux, machine learning, opencv, ubuntu, user interface, windows | Leave a comment

Isobuster alternative for Ubuntu

dvdisaster can be used for recovering Files from a Corrupt CD/DVD . It is the best alternative for Isobuster on Linux.

In Ubuntu, dvdisaster can be installed through the software center. 
Or you can get the latest version from HERE.

dvdisaster can be helpful to recover the contents of a damaged disc even when no ECC data is available.

The entire disc can be read into an image, skipping damaged parts.

dvdisaster can then repeatedly rescan just the missing parts until all damaged areas have been filled in by correct data. 

<span class="entry-utility-prep entry-utility-prep-cat-links">Posted in</span> cd, dvd, free, isobuster, open source, recover, ubuntu | 2 Comments

GIMP 2.8 Released

 GIMP is a powerful Open source image manipulation program available on Linux, Windows and Mac that closely resembles Adobe Photoshop in its features and functionality.

Added Features and Changes

layer groups

 New Keyboard Shortcuts

  Alt (Shift)click = Alpha from layer
  Ctrl+Shift+E = File / Export
  Ctrl+E: quick export
  Ctrl+Shift+R = Resize canvas to window size
  Ctrl+R = Resize window to canvas size

Save And Export
Save and export screenshot
A  new conceptual change is that saving and exporting images are exactly separated activities. Saving can be done only in the XCF format (GIMP’s native file format).
To export into other formats like jpg,jpeg,png…., user File->Export  used. This seperation makes it clearer wether all the available information is stored in a file, or not.

Gimp 2.8 for Windows

The official GIMP 2.8.0 build for Windows has now been released:
Get it from Here

GIMP for Unix-like systems

It’s very likely your Unix-like system such as a GNU/Linux distribution already comes with a GIMP package. It is a preferred method of installing GIMP, as the distribution maintainers take care of all the dependencies and bug fix updates.

Ubuntu, Debian

Ubuntu or Debian users can simply run apt-get install gimp to get the latest stable release of GIMP.


SUSE users can install GIMP by running yast -i gimp or zypper in gimp, depending on the distribution version.


Similarly to the above, Fedora users can install the latest stable GIMP by running yum install gimp.


Mandriva Linux users can install the latest stable GIMP by running urpmi gimp.


GIMP is also available for the BSD family of systems such as FreeBSD and OpenBSD.

<span class="entry-utility-prep entry-utility-prep-cat-links">Posted in</span> BSD, Fedora, Gimp, gimp 2.8, image editing, linux, Mac OS, Mandriva, open source, openSUSE, photoshop, software, ubuntu, windows | 6 Comments

New Ubuntu TV – Everything you want in a TV

Canonical developed and released a Smart TV Operating System named as Ubuntu TV. It is based on the new Ubuntu 12.04 LTS (Precise Pangolin). It makes use of the Unity as its user Interface, built with Qt application framework.


Technical specifications and requirements

Ubuntu TV benefits from the comprehensive hardware support that’s always been a hallmark of Ubuntu for PCs. Highlights include:

  • Support for ARM and x86 boards1
  • Local storage support for DVR functionality2
  • Minimum disk space: 2GB
  • Minimum memory: 1GB
  • Minimum video memory: 512 MB
  • HDMI
  • CEC support
  • Digital audio out
  • Hardware accelerated video capable of displaying content at 1080p3
  • Network connectivity: Gigabit Ethernet & Wireless b/g/n
  • USB host support
  • Bluetooth HCI interface
  • Modular tuner for broadcast TV (Satellite, Cable, Terrestrial)

                                Main Features

Terrestrial broadcast in US and EU standard formats, for standard or high definition content, with integrated electronic programme guides.

Integrate your cable or satellite service into Ubuntu TV, to provide a unified customer experienc.

Ubuntu TV integrates online content providers to offer a diverse catalogue of movies, TV shows and music straight from the Internet.

Second-screen experiences are an emerging trend in broadcast television.
Intelligent search.

Individual preferences and suggestions.

                             Watch Video



Contact Canonical for Details

<span class="entry-utility-prep entry-utility-prep-cat-links">Posted in</span> Canonical, Review, smart TV, TV, ubuntu, ubuntu 12.04 LTS, Ubuntu TV, Unity, Video | Leave a comment

Resolve Apache 403 Forbidden Error

First check whether index.php or index.html is present on the server.

Make sure that the current user have access to the /var/www directory.
For that, Open the Terminal and type

sudo chmod -R 0755 /var/www

Now restart apache with the command

 sudo service apache2 restart

<span class="entry-utility-prep entry-utility-prep-cat-links">Posted in</span> 403, access denied, apache, error, forbidden, linux, localhost, permission, php, server, web | Leave a comment