Few tcl scripts for simulation

tcl+scenario+traffic

NS-2 with olsr patch installed already

Here is the link to download ns-allinone-2.34 patched with olsr.

Method of installing it is the same as described here except you don't need to download the ns-2.34 :p.

Hyper Terminal for windows 7

Here is the link to hyper Terminal to access the serial ports through windows 7.

A Wonder full book to learn C++ Programming for Beginners

This Book covers the basics of C++ in a very lighter way. The language used is really amusing and simple to understand. It is a hands on step by step resource of c++ that will guide you through each phase of C++ programming, providing you with the foundation to discover how computer programs and programming languages work.

Table of Contents

• Chapter 1 - How a C++ Program Works
• Chapter 2 - Memory and Data Types
• Chapter 3 - Variables
• Chapter 4 - Arithmetic Operators
• Chapter 5 - Making Decisions: if and switch Statements
• Chapter 6 - Nested if Statements and Logical Operators
• Chapter 7 - The For Loop
• Chapter 8 - While and Do While Loops
• Chapter 9 - Functions
• Chapter 10 - Arrays
• Chapter 11 - What’s the Address? Pointers
• Chapter 12 - Character, C-String, and C++ String Class Functions
• Chapter 13 - Persistent Data: File Input and Output
• Chapter 14 - The Road Ahead: Structures and Classes

Download C++ Demystified

AWK File scripts

Here is the link to an awk file. It calculates all the prominent parameters from a trace of new format. AWK FILE. You can enable generation of new format trace file in tcl file by statement "$ns use-newtrace", where $ns is the name of scheduler instance you are using. Also make sure the Agent(AGT) and mac trace are enabled in tcl file.

Simple calculator in C using strings

You can download the flow-chart pseudo code and the c program from the link given below.
calculator_in_C

This program performs the simple functions of

1. addition
2. subtraction
3. multiplication
4. division.
5. remainder
6. expression evaluation including parenthesis(highest precedence) and precedence from left to right

Installation of ns-2.34 in Ubuntu 10.10

The process of installation of ns-2.34 is very similar to installing it in fedora.

Ubuntu doesnot contain the yum installer so you will need apt-get installer to get dependencies.

Run the following command to install all dependencies needed for installation of ns-2.34.

sudo apt-get install xorg-dev g++ xgraph

Fix the error in the linking of Otcl by editing the line 6304 of otcl-1.13/configure so that it reads

SHLIB_LD="gcc -shared"

instead of

SHLIB_LD="ld -shared"

NS2.34 installs smoothly with gcc compiler version 4.3. By default, Ubuntu10.10 ships with gcc-4.4.5. So we use a downgraded compiler version for the installation. This is done as follows :
Edit Makefile.in found at this location ns-allinone-2.34/otcl-1.13/Makefile.in as follows:

Find the line that says:
CC= @CC@
and change it to:
CC= gcc-4.3

And run
./install 

After ns-2.34 is successfully made you will have to give the path in similar way as u did in installation of ns-2 in fedora. You can see that post here to set the exact path. Good Luck  

Method of Installing ns-2.34 in Fedora 12

First of all Install the dependency packages.  This will create an environment to get ready to install NS-2.  All the packages will be downloaded from the Internet, therefore make sure you have an Internet connection.

It is advisable to do all the steps as a Super User, or abbreviated as su in Linux.  To change status as a super user, type:

su -

you will then required to enter the root password which you entered during the Fedora Core 8 (FC8) installation.

Then, you can start to install the package dependencies.

yum install autoconf
yum install automake
yum install gcc-c++
yum install libX11-devel
yum install xorg-x11-proto-devel
yum install libXt-devel
yum install libXmu-devel

After installation of dependancy packages is complete download and install NS-2.  In this example, I’m showing how to install NS-2 version 2.30.  I am using the all in one package, ns-allinone-2.30.

From the terminal, you can use the wget command to download the NS-2 package.  Then, decompress/ untar it before installing using the ./install command.  Please make sure that you are the root before installing the package.

$ wget http://www.isi.edu/nsnam/dist/ns-allinone-2.30.tar.gz
$ tar -xzf ns-allinone-2.30.tar.gz
$ cd ns-allinone-2.30.tar.gz

You can also download the ns-allinone-2.xx package of ns-2 using mozilla and untar it using GUI.
after that you will need to goto ns-allinone-2.xx directory and run the following command.


          $. /install

If you are familiar with the Windows environment, you will notice that there is section where you can configure the environment variables to set a Class Path.  In Linux, we also have the section, but it is not in a graphical user interface (GUI).  It is in a text file format named .bashrc.  You have to add some lines in the text file so that it can detect the NS-2 libraries to compile your script that you will write to configure your simulation scenarios and settings.

Go to the /etc folder.  Then type:

gedit .bashrc

Then, add some lines at THE END of the text file.  Remember replace “/usr/local/” by your installation path like “/home/najwan”.  These lines are:

# LD_LIBRARY_PATH
OTCL_LIB=/usr/local/ns-allinone-2.xx/otcl-1.xx
NS2_LIB=/usr/local/ns-allinone-2.xx/lib
X11_LIB=/usr/X11R6/lib
USR_LOCAL_LIB=/usr/local/lib
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$OTCL_LIB:$NS2_LIB:$X11_LIB:$USR_LOCAL_LIB
# TCL_LIBRARY
TCL_LIB=/usr/local/ns-allinone-2.xx/tcl8.x.xx/library
USR_LIB=/usr/lib
export TCL_LIBRARY=$TCL_LIB:$USR_LIB
# PATH
XGRAPH=/usr/local/ns-allinone-2.xx/bin:/usr/local/ns-allinone-2.xx/tcl8.x.xx/unix:/usr/local/ns-allinone-2.xx/tk8.x.xx/unix
NS=/usr/local/ns-allinone-2.xx/ns-2.xx/
NAM=/usr/local/ns-allinone-2.xx/nam-1.xx/
PATH=$PATH:$XGRAPH:$NS:$NAM

 You can use these steps to install the later version of NS, such as ns-allinone-2.31 and ns-allinone-2.32. BUT make sure the version number is correct!  This includes the nam version, tcl version, tk version and the otcl version. replace the "x" with the correct version number as in your downloaded ns-allinone-2.xx.