Udhayakumar

My blog.... . . .

[udhayakumar]

Wish you happy new year..... . . 2014

 Wish you happy new year..... . . 2014

[udhayakumar]

find and remove folders/files in linux

Example:

$udhayakumar@TB013:~/dump/data$ 

Make sure you are in correct location then use below command as per your needs

folder:      find -name "\.svn" -exec rm -rf {} \;

         or   find -name "\code" -exec rm -rf {} \;

files:        find -name "\.jpg" -exec rm -rf {} \;

         or   find -name "xyz.txt" -exec rm -rf {} \;

[udhayakumar]

HTML Ascii code 4 Triangle or arrow

For HTML ASCII Coding  ◄ = ◄  ► = ►  ▼ = ▼  ▲ = ▲

For UNICODE

U+25B2 = ▲

U+25BC = ▼

U+25C0 = ◀

U+25B6 = ▶

[udhayakumar]

Setting proxy in android phone(opera)

Download opera from the play store

type opera:config in address bar and press go

now a page opens with set of settings for opera

search the proxy

change the proxy which you want to use

save it, and restart the opera

all over

*correct me if i am wrong

[udhayakumar]

Ubuntu panel power indicator

Purge and re-install indicator-power

          sudo apt-get purge indicator-power

     sudo apt-get install indicator-power

[udhayakumar]

jdk7-installation in ubuntu12.04

clean and install oracle JDK in linux

sudo aptitude purge `dpkg -l | grep java | awk '{print $2}'` -y

sudo aptitude purge `dpkg -l | grep gcj | awk '{print $2}'` -y

Download the Linux  version of jdk

tar -xvf jdk-7u4-linux-i586 (1).tar.gz

sudo mv ./jdk1.7.0_04 /usr/lib/jvm/jdk1.7.0_04

update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.7.0/bin/java" 1 sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.7.0/bin/javac" 1 sudo update-alternatives --install "/usr/bin/javaws" "javaws" "/usr/lib/jvm/jdk1.7.0/bin/javaws" 1

sudo update-alternatives --config java

java -version

All done.... . .

[udhayakumar]

Ubuntu 12.4 show desktop

use this shortcut keys to show desk top in ubuntu 12.04

ctrl + super(windows) +d

[udhayakumar]

Get Localhost ip in PHP 4 all interface in ubuntu

old one not that much friendly..... . .

use this snippet to get ip's for all network interface to ubuntu system

<?php

$temp = shell_exec("/sbin/ifconfig | cut -b 1-10");

$array = preg_split("/[\s]*[ ][\s]*/", $temp);

$array = array_diff($array, array(""));

$ip = 0;

foreach ($array as $inetface)

{

$ifconfig = shell_exec('/sbin/ifconfig '.$inetface);

if(!is_null($ifconfig))

{

echo '/sbin/ifconfig '.$inetface.' : ';

preg_match('/addr:([\d\.]+)/', $ifconfig, $match);

$ip = $match[1];

echo $ip.'<br>';

}

}

?>

CORRECT ME if i am wrong... . .

[udhayakumar]

Get Localhost ip in PHP 4 all interface

regular usage

$ifconfig

eth0  blob blob

lo     blob blob

wlan blob blob

try something better like this

udhayakumar@TB013:~$ ifconfig eth0 | grep "inet addr:"

          inet addr:192.168.0.117  Bcast:192.168.0.255  Mask:255.255.255.0

udhayakumar@TB013:~$ ifconfig wlan | grep "inet addr:"

          inet addr:192.168.0.119  Bcast:192.168.0.255  Mask:255.255.255.0

udhayakumar@TB013:~$ 

now How to use these things in php code

<?php

echo exec('/sbin/ifconfig eth0 | grep "inet addr:"');

echo "<br />";

echo  "wlan ip address::::: ";

echo 

exec('/sbin/ifconfig wlan | grep "inet addr:"');

?>

Correct me if i am wrong.... . .

[udhayakumar]

PHP mysql_connect Error

HI,

   Sometimes mysql_connect() method returns the error(in browser 500 - Internal server error) in log is like 'Resolving a Fatal error: Call to undefined function mysql_connect()'

To solve this issue:

method one:

Verify that the line to load the extension in php.ini has been uncommented. In Linux, the line is extension=mysql.so. Uncomment the line by removing the semi-colon. You might also need to configure the extension_dir variable(mysql.so file dir).

if it fails try

method two:

$ sudo apt-get install mysql-client

$ sudo apt-get install php-mysql

Note: after each process dont forget  to restart the server

[udhayakumar]

QR droid service usage in android

install QRdroid then try this snippet.

public class LoginActivity extends Activity {  private static final int ACTIVITY_RESULT_QR_DRDROID = 0;  public static final String SCAN = "la.droid.qr.scan";  public static final String COMPLETE = "la.droid.qr.complete";  public static final String RESULT = "la.droid.qr.result";  //public static final Map MAP = new HashMap();  public static final Map CONFLIST = new HashMap();  @Override  public void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  //For full screen display  requestWindowFeature(Window.FEATURE_NO_TITLE);  getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,W indowManager.LayoutParams.FLAG_FULLSCREEN);  //setContentView(R.layout.main);  Intent scaIntent=new Intent( SCAN );  scaIntent.putExtra(COMPLETE, true);  startActivityForResult(scaIntent, ACTIVITY_RESULT_QR_DRDROID);  }  @Override  protected void onActivityResult(int requestCode, int returnCode, Intent intent) {  super.onActivityResult(requestCode, returnCode, intent);  if (ACTIVITY_RESULT_QR_DRDROID==requestCode && null!=intent && intent.getExtras()!=null ) {  String result = intent.getExtras().getString(RESULT);  Log.e("", result);  }  }  //string separator  private void getlines(String result) throws ClientProtocolException, IOException {  //result is qr content  }  }  Try this code

[udhayakumar]

Stop Async in Ajax call

In Ajax use 'async: false' to stop executing first, It may helps to execute the code in sequence,

$.ajax({

        type: 'GET',

        async: false,

        url: 'url',

        cache: false,

        dataType: 'json',

        success: function (response) {

           //TO-DO

     }

});