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Blogging and Google Adsense get me a DSLR Camera

By blogging and Google Adsense, my long time wish have come true that I got an DSLR (Nikon D5100). 
Nikon D5100

Blogging is a word that seems to be a "No man's Land" when I started this blog in 2006. Yes I started this blog mainly for providing lecture notes to my students. Initially I started this with and a year later, I purchased (this website) and shared contents. 
Initially I was not bothered about the ranking, search engine optimisation (SEO), page rank, etc. My main motive was to create content for the student community. Slowly, I improvise my contents to satisfy the global readers too. The topics that covered in my domains play a vital role in the provide information to open source research community. 
The topics of interest are 
  • Network simulator 2
  • Linux
  • Open Source Technologies
  • Wordpress
  • PHP, MySQL
  • Real TIme Systems
  • Embedded systems,
  • Java and etc.
This website was hacked twice and contents gets deleted. So I moved to Blogger for sometime.
Google updates the search engine algorithms many a times during these years, my website never get punished by the google search algorithms as the contents are original and the contents are for the readers and not for the search engines. Also I spend much of time in creating the contents, lecture notes, video tutorials, etc.
I started another blog in the year 2011 (Pageviews so far 651,449)  to cater the needs of the networking research community. (#nsnamcom) hosts mainly contents related to 
  • C,C++
  • Linux
  • NS2
  • NS3
  • tracegraph
  • xgraph
  • and other open source tools
It got huge visitors and pageviews. In the initial days, I paid the hosting charges on my own, later through Google Adsense, I enrolled in their program and they pay me now for running my websites for the hosting and domain charges.

Those who want to do blogging,
  • identify your niche areas (Photography, fashion, cooking, technology, gadgets, cinema, making money, blogging stuffs, research, etc)
  • learn the stuff
  • create contents.
  • And be original, dont copy content from anywhere
  • Enrol yourself in any of the advertising platforms like (adsense, infolinks, admob, etc)
  • Dont make your website idle, Write post atleast once a day or week (Its like a shop, if you dont open for a week, the customers may go somewhere else)
  • And Write for the readers and not for the search engines.
Happy blogging!!!!
T S Pradeep Kumar


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Installation of ns2 in Ubuntu 18.04 - NS2 Tutorial # 2

ns2 installation in Ubuntu 18.04

Unlike earlier version of ubuntu, the 18,04 version does not support the direct installation of ns2, because of the latest C/C++ compiler (7.x), but the latest C/C++ compiler supported by ns2 is gcc-4.8. So this post and video tells you about the installation of gcc-4.8 version, then ns2 and then configuration.
Here are the steps, Please follow the video given below for more information.

$] tar zxvf ns-allinone-2.35.tar.gz

$] sudo apt install gcc-4.8 g++-4.8

if you have installed ubuntu just now, you can try these commands also in the beginning

$] sudo apt update
$] sudo apt install build-essential autoconf automake libxmu-dev

$] cd ns-allinone-2.35/ns-2.35
$] gedit
$] gedit linkstate/ls.h

line number 137, change erase to this->erase
$] cd ..
$] ./install

export PATH=$PATH:/home/pradeepkumar/ns-allinone-2.35/bin:/home/pradeepkumar/ns-allinone-2.35/tcl8.5.10/unix:/home/pradeepkumar/ns-allinone-2.35/tk8.5.10/unix

AWK Scripts for NS2 to process data from Trace Files

AWK Scripts are very good in processing the data from the log (trace files) which we get from NS2. If you want to process the trace file manually, here is the detailHere is a sample of trace file from NS2 (However ns2 supports a new type of trace file also), but this post will make you understand the old trace format only.r 0.030085562 _0_ MAC  --- 0 message 32 [0 ffffffff 1 800] ------- [1:255 -1:255 32 0] r 0.030110562 _0_ RTR  --- 0 message 32 [0 ffffffff 1 800] ------- [1:255 -1:255 32 0] s 1.119926192 _0_ RTR  --- 1 message 32 [0 0 0 0] ------- [0:255 -1:255 32 0]
AWK Scripts are very good in processing the data column wise. For example
the first column in the above trace file represents r, s which indicates receive, sent respectively. If we want to trace the entire r and s alone from this trace file we can represent it as $1
$1 represents ACTION
$2 Time
$3 Node ID
$4 Layer
$5 Flags
$6 seqno
$7 type
$8 Size
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ns3 installation in Ubuntu 16.04

This post serves the installation instructions of ns3 in ubuntu 16.04 version. Some of my students are working in ns3, this post will benefit them in installing ns3.

OS Used: Ubuntu 16.04.4
ns3 version: ns3 version 3.27

The same procedure will be applied for OS like Debian, Linux Mint.

Fresh installation of Ubuntu 16.04 Let you try the fresh installation of ubuntu in your hard disk along with windows.
Installation of ns3 dependencies ns3 needs so many dependencies, developmental libraries, drivers, etc. so install all those
$] sudo apt update  $] sudo apt upgrade
$] sudo apt-get install build-essential autoconf automake libxmu-dev python-pygoocanvas python-pygraphviz cvs mercurial bzr git cmake p7zip-full python-matplotlib python-tk python-dev python-kiwi python-gnome2 python-gnome2-desktop-dev python-rsvg qt4-dev-tools qt4-qmake qt4-qmake qt4-default gnuplot-x11 wireshark
The above command make take some time to download, compile and install it, Be Patient. 
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