Convert Multicast IP To Mac Address Online
By On September 6, 2011 Leave a Comment 490 views
For multicast forwarding, the mac addresses in the range 01-00-5E-00-00-00 to 01-00-5E-7F-FF-FF have been reserved. The most significant 25 bits of the above 48-bit mac address are fixed while the lower 23 bits are variable. These lower 23 bits are derived from the lower 23 bits of the multicast IP address. The IP multicast range spans from 224.0.0.0 to 239.255.255.255. The most significant 4 bits of this address range is fixed ( 1110 ). Hence when an IP multicast address maps to a mac address, out of the total of..... Read More
Tip – Vim Indent Solution
By On September 5, 2011 2 Comments 35 views
Some time back we wrote about a tip to fix vim indentation getting problematic when copy-pasting. That works great - but only if the original code that you are copying is indented properly. It may be indented properly but with different indentation settings (tabs instead of spaces, indent of 2 or 8 spaces instead of your favourite of 4 spaces). When added to the your code, it stands out awkwardly from the rest of the code. Here's another use case - as programmers, we often encounter badly indented code and..... Read More Tip – Vim Indent Paste Solution
By On June 7, 2011 Leave a Comment 61 views
If you have faced problem with indentation getting problematic whenever you copy paste to vim, here is a simple tip. Before we go there - simple illustration of the problem. Lets say the following text is something you are pasting to vim in the insert mode int main(void) { int i, j; for(i=0; i<10; i++){ j = i*2 ; printf("\n j %d",j) ; } return 0 ; } When you paste in vim, the same code appears something like the following As you can notice, the indentation totally gets haywire..... Read More How To Add Signature To Email
By On May 27, 2011 Leave a Comment 80 views
Email signature is a very effective way of representing yourself in the eye of the email recipients. While a professional email signature would help you get attention, an ordinary one would show you in bad light. With the advent of social media and it's penetration - it makes all the more sense to have your social profile included in your email signature so that you can effectively connect yourself with your email readers. However, creating email signature can be tricky. Customizing it and refining the look and feel could be..... Read More How To Customize Genesis WordPress Theme – Part I
By On May 23, 2011 3 Comments 535 views
This is the first post in a series on how to customize the Genesis premium theme. I recently installed the Genesis premium theme from Studiopress and have been experimenting with customizing it. I would be sharing on what all was tried and what results did it yield. One basic tip to remember is to always use the Genesis Child theme instead of making changes directly in the Genesis framework Customizing the Sidebar The default sidebar that comes with Genesis is empty. You just have a primary widget space and it..... Read More Find Your Website Load Time From Locations Across The World
By On May 6, 2011 Leave a Comment 121 views
I had earlier talked about how page load time is an extremely important aspect of the user experience and how one can compare page load times of two websites to find which one loads faster. If your website has readers spread across the world, it is important for you to know about their user experience wrt your website's page load time. One online service which enables you to check your website's page load time from different browsers across the world is loads.in. It provides you with the following information The..... Read More How To Type Special Characters
By On April 6, 2011 2 Comments 45 views
Typing special characters using keyboard can sometime be a pain. For example do you know how to type an α(alpha) or a ß (beta)? Don't worry, you don't need to memorize and keyboard shortcuts for this! A very simple online service that makes this job a breeze is Copy Paste Character. This service presents you a pictorial list of all the special characters that you would possibly require. If you want to use a given special character in either of your text, all you need to do is to go..... Read More Convert PPT To Video Using AuthorStream
By On March 25, 2011 2 Comments 97 views
If you have a ppt file which you want to convert to a video and eg upload to Youtube, you must checkout an online service called AuthorStream. It essentially enables you to share your presentations online eg on your blog or Youtube. The service is absolutely free and all you need to do is register on the website and upload your presentations. Once the presentation is uploaded, you get a URL using which you can embed this presentation on your own website and it will play as a flash movie...... Read More C Program For Generating Incremental MAC And IP Addresses
By On March 12, 2011 Leave a Comment 206 views
The other day I had this requirement to generate 4K incremental MAC and IP addresses and use them for some configuration. Typing 4k addresses by hand was never an option. So I spent some time to write a small C program that did the job for me for generating 4K mac and ip addresses starting from a given initial value. The idea was pretty simple The program should be able to print out the addresses which I can copy paste to create eg a command file. The program should take..... Read More
VNC Tips When Using a Monitor With Your Laptop
By On March 6, 2011 Leave a Comment 123 views
VNC viewer is an excellent tool which can be used to remotely control desktop of machine on your network. In today's world almost each one of us uses a laptop for daily business which is typically connected to a monitor on the desk for projecting the laptop output and thus enabling ease of viewing. Though VNC works seamlessly here , the following few tips would enhance the experience and ensure you get the full screen view in your vnc session even when you have projected your content on to the..... Read More
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