SERVFORU

Install XAMPP in Linux Mint

To install XAMPP in Linux Mint just download XAMPP and follow the steps below

 Download Xampp From here http://sourceforge.net/projects/xampp/files/LAMPP/0.9.4/

Go to Terminal and login as admin by the command
               $su 
Extract the downloaded archive file to /opt:


$tar xvfz xampp-linux-1.8.0.tar.gz -C /opt


To start XAMPP simply call this command:
/opt/lampp/lampp start

 

Install Netbeans To your Ubuntu Or Linux Mint

Try following steps to install Netbeans

in the simpleset way is getting by some package manager ,for this
1.Open your linux Terminal
2.
Run the command $sudo apt-get install netbeans
3.
after installing just run netbeans by $netbeans in the terminal

Now there is a hard way to install netbeans and that is here

download netbeans.sh from the netbeans download page : http://netbeans.org/downloads/

then

open linux terminal

1.Open Terminal
2. enter to the folder where netbeans downloaded  $cd Downloads3. Change the mode
            $s
udo chmod +x netbeans.shmay be the filename will be
4. install netbeans
  $sudo ./netbeans.sh 

 

WiFi Not Working In Ubuntu ? Troubleshoot yourself

After deleting the Windows and installing ubuntu ,may be some drivers get disabled , to activate this back in ubuntu or in Linux mint we can use the following steps

1. open the Terminal
2. check the status of the hardware devices by using the command rfkill list
              $sudo rfkill list

3. you can see whether it blocked by hardware or software  if it is blocked by hardware or software you can unblock it by using the the command rfkill unblock
               $sudo rfkill unblock 0: phy:0



You can block or unblock all wireless devices by hard block or by soft block

 

5 Things Do After installing Linux Mint

1. Software Update 
    select the update manager from
       Menu  >> Administration >> Update Manager

you can also do it with terminal  sudo apt-get update && sudo apt-get upgrade  

2.
Change the search engines of Firefox
To change the search engine in the search box of Firefox to Google, you just need to open Firefox then go to the following address:
 http://www.linuxmint.com/searchengine_google.php  


After that, click on the drop down list in the search box and select "Add Google"


To change the search engine of the address bar from DuckDuckGo to Google, you open Firefox , type about:config on the address bar. You will see a warning, just click on the "I'll be careful" button to go to the config page. In this config page, scroll down until you find the line that begins with "keyword.URL":


Right click on this line and select the Modify option. The box to edit the search engine will appear, in this box, you just need to replace the DuckDuckGo url with Google:
 http://www.google.com/search?q=  

Click ok .  Now both the address bar and the search box use Google as the default search engine.
3. Install new Themes and Icons 
 The best place to look for nice themes and icons in my opinion is Gnome-look . And get the themes and icons . Also remember to read the installation instruction of each theme and icon set.
 a conky setup
 
Install Conky in Ubuntu/Linux Mint open terminal (Press Ctrl+Alt+T) and copy the following commands in the Terminal:                 
 sudo apt-get install conky conky-all
If gadget doesn't adjust in your screen, you can change size in line 40, 41. Enter Following command to open file in text editor and change size:
                               sudo gedit ~/.conkyrc
5.Install Compiz Config Settings Manager
Compiz is an awesome tool, you can do a lot of cool things with it so I recommend everybody to install Compiz. You can tweak a lot of things with CCSM and of course, it is always fun to show the cubic desktops to your friends :D
To install Compiz, you can search for it in the Software Manager or run the following command:
 sudo apt-get install compizconfig-settings-manager  

6.Install Wine
I myself at times need to run some Windows applications so Wine is always a must-have tool for me. To install Wine, you can search for it in the Software Manager or use this command:
 sudo apt-get install wine  




 

Samsung Galaxy ACE s530i : A review


Well it’s been a week I am using my first Android phone, I was thinking to write a blog post on it. About my experience of using it. As previously I was an avid user of Symbian S60 family cell phones. What features Android gave me to forget Symbian easily, and what thing I am lacking it that some time reminds me about the blessings of Symbian.
Let’s have a look.
overview Display and LookOutstanding
Contacts Synch: all contacts has been synched with Gmail, Facebook and Twitter
Battery UsageIt’s battery usage is one and half day
No Support of Connectivity with Adhoc Networks Samsung Galaxy Ace can not scan the adhoc networks around you
Installing Apps:  Android market is the way 

Full Specifications 



GENERAL
            2G Network    GSM 850 / 900 / 1800 / 1900
            3G Network    HSDPA 900 / 2100
            Announced      2011, January
            Status             Available. Released 2011, February

SIZE     
            Dimensions     112.4 x 59.9 x 11.5 mm
            Weight            113 g

DISPLAY
            Type                TFT capacitive touchscreen, 16M colors
            Size                  320 x 480 pixels, 3.5 inches (~165 ppi pixel density)
                                    - Accelerometer, proximity, compass
                                    - TouchWiz v3.0 UI
                                    - Swype text input method
                                    - Proximity sensor for auto turn-off

SOUND    
            Alert types       Vibration; MP3, WAV ringtones
            Loudspeaker    Yes
            3.5mm jack      Yes
                                     - DNSe sound enhancement

MEMORY
            Phonebook       Practically unlimited entries and fields, Photocall
            Call records      Practically unlimited
            Internal            158 MB storage, 278 MB RAM
            Card slot          microSD, up to 32GB, 2GB included.

DATA
            GPRS              Yes
            EDGE              Yes
            3G                   HSDPA, 7.2 Mbps
            WLAN            Wi-Fi 802.11 b/g/n, Wi-Fi hotspot
            Bluetooth         Yes, v2.1 with A2DP
            Infrared port     No
            USB                 Yes, microUSB v2.0
        
CAMERA
            Primary             5 MP, 2592x1944 pixels, autofocus, LED flash, check quality 
            Features            Geo-tagging, face and smile detection
            Video                Yes, QVGA@15fps
            Secondary         No

FEATURES
            OS                    Android OS, v2.2 (Froyo)
            CPU                  800 MHz processor
            Messaging         SMS(threaded view), MMS, Email, Push Email, IM
            Browser            HTML
            Radio                Stereo FM radio with RDS
            Games              Yes, with A-GPS support
            Colors               Black, White, Hugo Boss Edition
            GPS                 Yes, with A-GPS support
            Java                  Via third party application
                                     - Digital compass
                                     - SNS integration
                                     - MP4/H.264/H.263 player
                                     - MP3/WAV/eAAC+ player
                                     - Organizer
                                     - Document viewer/editor
                                     - Image/video editor
                                     - Google Search, Maps, Gmail, YouTube, Calendar, Google Talk,
                                       Picasa integration
                                     - Voice memo/dial
                                     - Predictive text input

BATTERY                   Standard battery, Li-Ion 1350 mAh
               Stand-by       Up to 640 h (2G) / Up to 420 h (3G)
               Talk time       Up to 11 h (2G) / Up to 6 h 30 min (3G)
 

cognitive radio cognitive network (CRCN) Simulator : in Linux mInt & ubuntu

Cognitive radio network is a new emerging research area recently.  It enhances the existing software-defined radio, whose physical layer behavior is largely defined in software.Cognitive radio has the following characteristics  

  •  it is aware of its environment and its capabilities
  • it is able to independently alter its physical layer behavior based on its previous experience and its current environment
  • it is capable of performing the complex adaptation strategies according to the cognitive cycle
With the spectrum opportunities provided by the cognitive radio network, the wireless network users are able to share the idle spectrum for TV channel, on the condition that it does not interfere with the normal TV channel. 

This cognitive radio cognitive network (CRCN) simulator is a software based network simulator for network-level simulations. It is based on open-source NS-2 (network simulator 2). CRCN simulator supports performance evaluations for the proposed dynamic spectrum resource allocation, power control algorithms, and the adaptive Cognitive Radio (CR) networking protocols including the CR MAC and the CR Routing protocols. This simulator uses NS-2 to generate realistic traffic and topology patterns. For each node in this simulator, a reconfigurable multi-radio multi-channel PHY layer is available by customizing the spectrum parameters such as transmission power, propagation and etc 
CRCN simulator enables the interface parameters transmission between different layers, as shown in arrows with blue color. Users just need to replace their own Routing and MAC algorithms according to NS-2 protocol design requirements with the existing one in the CRCN.

Functionality Overview



  Support for CR Routing
·        Multi-radio multi-channel support
·        Single-radio multi-channel support
·        Interface to select radio
·        Interface to select channel
·        Heterogeneous radio and spectrum environment
·        Information needed during routing process
 Support for CR MAC
·        Single-radio multi-channel support
·        Multi-radio multi-channel support
·        Interface to select channel
             ·        Information needed during dynamic spectrum access 
 Support for CR PHY
             ·        Reconfigurable spectrum parameters and radio parameters
             ·        Interference information
             ·        SINR/SNR physical model
CR Routing/CR MAC algorithms
 Performance Evaluation for CR algorithms
 Graphical User Interface (GUI)

SYSTEM REQUIREMENTS

This simulator is based on NS-2 (version 2.31). All codes have been tested in ns-2.31 under Linux environment. To use the GUI provided by this simulator, it is required that your system is installed with java runtime environment (JRE) 6 or above. Also, gnuplot should be installed under Fedora. The GUI is tested under Fedora 4.

Installation 
NS2 COMPONENTS
 1: Make sure your system meets the system requirements.
2 : Download crcn.zip
3 : Change your working directory to XXX/ns-allinone-2.31/ns-2.31/
4:  Unzip the crcn.zip.  Copy the files under each subfolders in crcn into the corresponding folders in XXX/ns-allinone-2.31/ns-2.31/. For example, copy the files under crcn/mac/ into XXX/ns-allinone-2.31/ns-2.31/mac/. Please note that it will overwrite some of your ns file in the same directory. Thus, backup the ns directory before executing this command. 
 5: Add the following three lines in the Makefile, which is under XXX/ns-allinone-2.31/ns-2.31/.
            wcett/wcett_logs.o wcett/wcett.o \
            wcett/wcett_rtable.o wcett/wcett_rqueue.o \
            mac/macng.o mac/maccon.o\
            mac/macngenhanced.o\    
6:  Run the following commands under XXX/ns-allinone-2.31/ns-2.31/ directory:
              make clean
              make depend
              make

GUI 

 1: Install the java JDK version 6 or above under linux, here is the link  how to install java
 2: Install the gnuplot 
3: Put throughput.pl and throughputcbr.pl under your ns working directory XXX/ns-allinone-2.31/ns-2.31/.4. Run CRCN.jar(updated)


check more on the link 

















 

Simple tool for generating Tcl script : NSG2

Everyone spent a lot of time to write TCL scripts for ns2, Here is a tool to create TCL scripts automatically.NSG2 is created for that. Now, I would like to share NSG2 with you. Hope you would like it.What is NSG2? :

NS2 Scenarios Generator 2(NSG2) is a JAVA based ns2 scenarios generator. Since NSG2 is written by JAVA language, you can run NSG on any platform. NSG2 is capable of generating both wired and wireless TCL scripts for ns2. Some major functions of NSG2 are listed below:
1. Creating wired and wireless nodes
2. Creating connection between nodes
3. Creating links (Duplex-Link and Simplex-Link)
4. Creating agents (TCP and UDP)
5. Creating applications (CBR and FTP)
6. Node movement
Is NSG2 free?
Yes, it is a free software. you can download it from here : download NSG2
Launch NSG2 :
To execute NSG2, you have to install JAVA6.0 first.  The details of JAVA6.0 installation, please refer the link
To execute NSG2 
 open the terminal and run $java -jar NSG2.1.jar
How to use NSG2
1.The nsg2 work space is like this


To create a node just click on the node and click on the workspace where you want the node

Change the agents type, protocols TCP,UDP etc.. and packet size

Then set application type,start time,stop time,rate and interval

Setup the simulation parameters 

Generate Tcl Script and save it 

you can run the Tcl script using your terminal
    check this link  to know how to run a Tcl script






 

How to run a jar file in Linux Mint & Ubuntu


Try the following simple steps

For executing a .jar file you need Java 6.0 or higher ,if you have java installed start from  step 3

1. open the Terminal 
2. run the command to install openjdk

 $sudo apt-get install openjdk-7-jdk

3.  to execute  the .jar
 $java -jar sample.jar 

 

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What is "Recharge Earnings"

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First Tcl script for beginners: "Hello World"

Hope you all have installed ns2 , now we can go for coding
As the ns2 simulations work on tcl scripts so we should know about tcl
Here some simple steps to write the "hello world" program in tcl

we can write tcl codes in two ways in interactive mode and in batch mode

first we can have look to interactive mode 

1.open the terminal
             type  $ ns
2. a command prompt open
         Create a new simulator object by using the command
                        set ns [ new Simulator ]

This is Usually the first non-comment statement in ns-2 script 
- Initialize the packet format
   - Create a scheduler (default is a calendar scheduler)
   - Create a “null agent”

3.  to print text on screen we use puts command
               $ns at 1 "puts "\Hello World\""
    here we Schedule an event to write at the time 1 
      by this script simulator instance "ns" writes "hello World"
4.  now we have to exit the simulator object
                         $ns at 1.5 "exit"

 5. now we have to run the simulator object,
                      $ns run
this starts ns
           
and this prints hello world

In batch mode  its much simple

open a text editor and write the codes there and save it with .tcl  file extention 

 expamlpe

 hello.tcl :

set ns [new Simulator]
$ns at 1 "puts \"hello world\""
$ns at 1.5 "exit"
$ns run

open the terminal and execute the hello.tcl by
            $ ns hello.tcl
 












 

How to Install NS2 and NAM in linux mint & Ubuntu


 Take a look into the installation of a very famous tool that is widely used in Network related researches. Network Simulator or NS as it is popularly called is formally defined as a "discrete event simulator". For a post graduate in Computer Engineering or a PhD scholar it is, in simple terms, a valuable tool that greatly aids in simulating their concepts in wired and wireless networks.

 To install NS in Linux 
 Requirements
  •   ubuntu 10.10 or higher
  •  an internet conenction 
if you have both  follow the simple steps 

   1. open the Terminal
   2.First update the Ubuntu repos:
                       
                  $sudo apt-get update


   3.  to install ns2           $ sudo apt-get install ns2


  4.  to install nam          $ sudo apt-get install nam

After this whenever you need to run a tcl script just type the following from the location where you have the tcl script:
$ ns somefile.tcl
 
 
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