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Friday, March 30, 2012

How To Run VLC As Root

"VLC is not supposed to be run as root. Sorry. If you need to use real-time priorities and/or privileged TCP ports you can use vlc-wrapper (make sure it is Set-UID root and cannot be run by non-trusted users first)."

This error says straight forward vlc can not be run as root privileged user. Just edit /usr/bin/vlc using hexedit (you need to install this app) and search for geteuid and replace it with getppid. Save file & Exit.

Wednesday, March 28, 2012

Semoga Berjaya Kepada Calon CW Test 1-2012

Semoga berjaya! anda adalah diri anda yang sebenar, biar banyak kali jatuh tetapi jangan sesekali mengalah.

Tuesday, March 27, 2012

Speedup Firefox's Mouse Scroll

If you are using firefox in Ubuntu Linux, you might have wondered how you can change mouse scroll speed. To do that, you should roll up your sleeves and go to the hidden firefox settings.

 In address bar type: about:config You will see a textbox and a long list of options and settings.

In the "filter" textbox type: mousewheel.withnokey.sysnumlines Change the default value to "false".

Then type: mousewheel.withnokey.numlines The default value is "1". Increase this number to have faster scroll speed in firefox. I personally prefer "6".

You don't even need to restart firefox to see the changes. They take effect on the fly.

Terukir Di Bintang (Yuna's Cover)

Just for fun, enjoy!

Monday, March 19, 2012

What's So Great About Morse Code ?

First and foremost, it is simple. The only characters in the code are dit(.) and dah(-). This was the reason it was originally adopted -- even if the cable covered great distances and was of poor quality, it was still possible to distinguish these two characters. This binary nature is also the reason that Morse Code is still around. Users don't need 100 keys for input with Morse - 1 or 2 can do the trick. Through simple devices like a puff-sip straw or mechanical switch, disabled users have achieved full control of a computer.

What can we do with Morse Code in the 21st century?

Existing solutions: We wanted to focus on new and exciting angles on the use of Morse Code. There is a already a large body of custom devices available, catering to almost every possible style of input. There is also a reasonable amount of support for desktop applications that utilize Morse Code. For instance, you can get a free program for Linux that allows you to use a standard two-button mouse to enter text via Morse. Therefore we chose to instead focus on an area which has not been explored so extensively.
Mobile computing: This is an area that has not been explored so extensively, and we believe that Morse can become quite useful in certain mobile applications. Since a reasonable implementation of morse needs only 3 keys (instead of the 80 plus you'd find on a standard keyboard), it can easily be adapted to allow entry of text anywhere, with a very acceptable loss in speed.

Wireless interfaces: Modern PDAs are rapidly gaining support for wireless standards such as Bluetooth. This application lends itself quite well to a wireless input system. Instead of pressing keys on the PDA, one could leave the device in a briefcase, and send it input via a wireless device.

Text-to-speech: With the amount of processing power in a PDA, it is quite feasible to run a small text-to-speech engine. This speech feedback can free the user from looking directly at the screen. In addition, letter-by-letter feedback should reduce the number of errors -- or enable them to be fixed more quickly.

Universal computing: The hope behind this project is to design a product that is appealing to all users, whatever their level of ability. If a mobile user is willing to spend the time to learn Morse Code, then they can use a PDA to input text anywere without looking. The applications for such a use range from taking notes silently and unobtrusively at a meeting to recording thoughts on the drive home. But we don't want to limit our uses to just those with full abilities.

Saturday, March 17, 2012

Portable Station Di Tasik Biru, Kuang, Selangor

Baru-baru ini saya berjumpa dengan 9W2SBD yang kebetulan berada di Sungai Buloh, Selangor. Kami mencuba dengan portable low power station di Tasik Biru, Kuang, Selangor. Semua peralatan kepunyaan 9W2SBD sendiri. Di antaranya adalah:-

  1. Yaesu FT-817ND all band all mode low power transceiver
  2. PAC-12 portable vertical multiband antenna.
  3. Bateri kereta 12V

Station yang berjaya dihubungi adalah:-

  1. 9M2AVB 
  2. 9M2AI
  3. 9M2VOT
Selepas aktiviti ini, kami makan malam di kawasan Kuang bersama 9W2ZLZ. 

Terima kasih dan jumpa lagi!

Tuesday, March 13, 2012

Squid Proxy pfSense Firewall Router

pfSense adalah satu firewall operating system yang boleh didapati percuma. Berasaskan FreeBSD, firewall ataupun dinding api ini merupakan satu komponen yang penting dalam rangkaian anda tidak kira di rumah ataupun di pejabat. Simple networking ataupun mesh networking, firewall dapat menghalang dan memberi halangan pertama kepada rangkaian anda supaya tidak dicerobohi oleh pihak yang tidak diingini. Banyak lagi fungsi pfSense termasuk VPN, DHCP server, Proxy, Network antivirus dan lain-lain. Untuk mengetahui tentang firewall dengan lebih lanjut, sila ke http://en.wikipedia.org/wiki/Firewall_(computing)

Squid merupakan proxy software yang sangat diminati ramai pengguna kerana squid adalah robust, high performance dan boleh di "tune" mengikut keperluan anda.

Gabungan kedua elemen ini sangat memuaskan hati, dimana pfsense dan squid dapat memberi khidmat yang baik kepada pengguna rangkaian. Squid perlu di "tweak" dan ditampal dengan patch supaya dapat menjadikannya agressive dan greedy. Storage yang besar diperlukan apabila squid telah diubahsuai.

Lihat prestasi kerja squid yang telah dipatch, terpasang dalam firewall pfSense

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