Installing ns-2.35 in Fedora 21


This post will tell you how to install ns-2.35 in Fedora 21 64 bit OS.....

Step 1: Install all the necessary packages
$] sudo yum update
$] sudo yum install tcl tk gcc-c++ libX11-devel libXt-devel libXmu-devel

Step 2: unzip the software ns-xx.tar.gz
$] tar zxvf ns-allinone-2.35.tar.gz
$] cd ns-allinone-2.35/

Open the file
$] gedit ns-2.35/linkstate/ls.hin line number 137 change erase to this->erase as shown above.....
Save the file and give this command
$] ./install This will install all the packages as you see in the video. This process may be take upto 5 minutes.
Once installation is over now....


Setting the PATH
The following line is pasted in the PATH variable as shown in the video
$] gedit /home/pradeepkumar/.bash_profile

:/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/unixOnce the PATH is set, source the .bash_profile file as the new PATH will be reflected within the current terminal.
the command is
$] source /home/pradeepkumar/.bash_profile
now try
$ ns
$ nam
$ xgraph
to see whether the software is working or not.

 T S Pradeep Kumar

Installing Windows, Linux and Yosemite inside Mac

This post tells you how to install Windows and Linux within Macintosh Machine (Yosemite)
Base OS: Yosemite
Other OS: Windows 8.1, Fedora 21 (Linux Mint 17.1 also)
Machine used: Mac Mini (Mid 2013)

Installing Yosemite

Step 1: Install Yosemite (If you have mavericks, download it from the Store and install it)

Installing Windows 8.1 

  • Open Boot Camp and select "Install Windows 7 or later" and also select "Download the support Softwares for Windows 7 or later", You need to provide a FAT partitioned Pen Drive (This wil be another pendrive other than the Windows 8 Boot Pen Drive, if you dont have any other pendrive, leave this step, after installing Windows you may come back and download the support softwares) and Click Next.
  • Now Mac will ask for partitioning your hard disk into two (Select atleast 50GB for installing Windows).
  • Reboot and Press the "Option" button and select Windows (You have to insert the USB that boots Windows 8.1)
  • Everytime when Mac restarts, you need hold the "Option" key to select the Windows OS.
  • Once Windows installed, Open the FAT Pen Drive with the support software (There will be folder called Bootcamp, open it and click the setup.exe and wait till all the drivers are installed and you can see a bootcamp icon in the bottom right task bar)
  •  Thats it.... (Hold the "Option" Key everytime if you want to select the concerned OS (Mac or Windows)

Installing Linux (Fedora 21 or Linux Mint 17.1 or Ubuntu 14.04.1) 

  • Make a bootable Pendrive with either of these three OS (in my case, i used Fedora 21 64 bit)
  • You need to make the bootable pendrive that suits Mac... Here are the steps
  • Copy the Fedora-xx.iso file in Desktop and issue the command 
  • $] hdiutil convert -format UDRW -o ~/Desktop/fedora21.img ~/Desktop/Fedora-xx.iso
    $] diskutil list
    Select the appropriate disk (in my case/dev/disk2) and make it bootable by the following command
    $] diskutil unmountDisk /dev/disk2 
    $] sudo dd if=~/Desktop/fedora21.img.dmg of=/dev/rdisk2 bs=1m
    (you can use /dev/rdisk2 for faster operation, else you can use /dev/disk1, also remember i did all my work at the Desktop so, i put ~/Desktop, 
    in your case you can change the alternate location where you stored the iso and img) 
    Finally
    $] diskutil eject /dev/disk2 
  • Install rEFInd for Mac  http://sourceforge.net/projects/refind/files/latest/download
  • To install rEFInd, unzip rEFInd and open the folder, Open Terminal and drag the install.sh from the rEFInd folder and drop it to the Terminal and press Enter... 
  • Open "Disk Utility" by pressing the "Command+Space Bar" and shrink the boot space for Linux (20GB is the minimum recommendation I suggest). You can see the picture below. (The first image shows the unshrinked partition and the second image shows after shrinking)
Linux in Mac Mini
Linux in Mac Mini

Linux in Mac Mini
Linux in Mac Mini
  • Once done, Shutdown the machine and then Power ON. 
  • Select the Linux OS from FAT Partition and boot and install Fedora 
  • if You get the following error, "sda may not have enough space for grub2 to embed core.img" during the partition, you can reboot the machine and Hold the Option key and then select the Fedora Linux.
Once everything is installed, you can continue to boot Mac (Yosemite) or Windows 8.1 or Fedora 21..... So all three OS in a single Machine..... 

Raise your queries through the comment section below..... :)

Graphics.h in Linux Mint or Ubuntu

This post tells you how to install graphics.h in either Ubuntu or Linux Mint

Parameters:
OS : Linux Mint 17.1 - 64 bit OS

Usually graphics.h will not be available in Linux Mint and if you want to include that in Ubuntu or Mint, here are the steps and a sample program

$ sudo apt-get update
$ sudo apt-get install build-essential autoconf automake libxmu-dev 
The above line is needed to get all the developmental libraries for ubuntu or mint. 

$ sudo apt-get install libsdl-image1.2 libsdl-image1.2-dev guile-1.8 guile-1.8-dev libsdl1.2debian libart-2.0-dev libaudiofile-dev libesd0-dev libdirectfb-dev libdirectfb-extra libfreetype6-dev libxext-dev x11proto-xext-dev libfreetype6 libaa1 libaa1-dev libslang2-dev libasound2 libasound2-dev

The above line is needed to download the complete graphics with sound libraries

Download this file libgraph
http://download.savannah.gnu.org/releases/libgraph/libgraph-1.0.2.tar.gz

Go the download location and unzip it
$ tar zxvf libgraph-1.0.2.tar.gz
$ cd libgraph-1.0.2/
$ ./configure
$ sudo make
$ sudo make install
$ sudo cp /usr/local/lib/libgraph.* /usr/lib

Once done, its ready to run the graphics.h file

Here are two examples, one to plot  stars in space

/*A program to draw a space with stars*/
#include <graphics.h>
int main()
{
  int gd=DETECT,gm;
  int i,x,y;
  initgraph(&gd,&gm,NULL);
  line(0,0,640,0);
  line(0,0,0,480);
  line(639,0,639,480);
  line(639,479,0,479);
  for(i=0;i<=1000;i++)
  {
    x=rand()%639;
    y=rand()%480;
    putpixel(x,y,15);
  }
getch();
  closegraph();
}
/* End of program */
Here is the output
graphics.h
Graphics Program for Stars



Program 2: A Program to plot a Bar Graph (Histogram)
/*Here a sample program to illustrate how to use BARS which are used for visual statistics */
#include <graphics.h>
int main() {
  int gd=DETECT,gm,maxx,maxy,x,y,button;
  initgraph(&gd,&gm,"");
  line(80,150,200,150);
  line(80,150,80,50);  

outtextxy(100,153,"<-X axis");
  outtextxy(60,50,"<-Y axis");
  bar(100,100,120,150);
  bar(130,120,150,150);
  getch();
  closegraph();
}

Here is the output
graphics.h
Graphics.h for Bar Chart
 T S Pradeep Kumar