Run Apache As "Specific User" in Ubuntu

Access Below Command From Terminal

       

         sudo nano /etc/apache2/envvars

       
 

Modify Below Lines

       

         export APACHE_RUN_USER=specific_user
 export APACHE_RUN_GROUP=specific_user

       
 

Convert Mysql Time Stamp To Formatted Date

       

         Select DATE_FORMAT(FROM_UNIXTIME(`created_date`), '%e %b %Y') AS 'date_formatted';

       
 

Find The Distance Between Two Lat/Long using mysql functions

       

CREATE DEFINER=`root`@`localhost` FUNCTION `mm_calc_distance`(`lat1` double, `long1` double, `lat2` double, `long2` double) RETURNS double
BEGIN
 DECLARE distance_in_km double;
        SELECT 
           111.1111 *
           DEGREES(ACOS(COS(RADIANS(lat1))
           * COS(RADIANS(lat2))
           * COS(RADIANS(long1 - long2))
           + SIN(RADIANS(lat1))
           * SIN(RADIANS(lat2)))) into distance_in_km;


        RETURN distance_in_km;
END

       
 

Gist Github Url For Source Code 

Validate Email Domain in PHP

        $email_domain = preg_replace('/^.+?@/', '', $email).'.';
 if(!checkdnsrr($email_domain, 'MX') && !checkdnsrr($email_domain, 'A')){
    echo $email.' doesnot exist';
 } else {
  echo 'Email Domain '.$email_domain.' exists! ';
 }

Sublime Text - Parse CSV - Find Nth and N-1 th comma from EOL

In Sublime Text - Do A Find [using regular expression] - Apply the below expression


,(?=(?:[^,]*,){16}[^,]*$),(?=(?:[^,]*,){15}[^,]*$)

Problem with File.renameTo in java file io

renameTo method in java.io.file may not work always [For eg: During File Upload - if destination and source is in different file system, renameTo fails]

As per the documentation of java.io.file -

renameTo

public boolean renameTo(File dest)

Renames the file denoted by this abstract pathname. Many aspects of the behavior of this method are inherently platform-dependent: The rename operation might not be able to move a file from one filesystem to another, it might not be atomic, and it might not succeed if a file with the destination abstract pathname already exists. The return value should always be checked to make sure that the rename operation was successful.

Alternative approach is you can use org.apache.commons.io.FileUtils .

copyFile

public static void copyFile(File srcFile,
                            File destFile)
                     throws IOException

Copies a file to a new location preserving the file date.This method copies the contents of the specified source file to the specified destination file. The directory holding the destination file is created if it does not exist. If the destination file exists, then this method will overwrite it.

Overriding struts validate method for showing custom error message

Overriding struts validate method for showing custom error message during FileUpload

 @SuppressWarnings("unchecked")  
      public void validate()  
      {  
       List<String> uploadErrors = (List<String>)getActionErrors();  
       if (getFieldErrors().get("upload") != null)  
       {  
        uploadErrors.addAll((List<String>)getFieldErrors().get("upload"));  
       }  
       for (String err : uploadErrors)  
       {  
        if ( err.startsWith("Enter the Error Message to be overridden"))  
        {  
         clearErrorsAndMessages();  
         addActionError("Enter new error message");  
         break;  
        }  
       }  
      }  

Eliminate Duplicate In Javascript

 


function eliminateDuplicates(arr) {
    var i,
        len=arr.length,
        out=[],
        obj={};

    for (i=0;i

Ref :- Link Here

GrabText Chrome App

Check out Chrome App GrabText we developed
GrabText Chrome App

GrabText V 0.1 is a Free Chrome App to Grab the Text to your phone.

Scan the QR Code and Grab the Text. 
An easy way to copy any text in webpages to your smartphone.

This is based on HTML5/JS/Chrome Handle/Google Infographic charts.

Please download and write your review for the app

Version 1.0 is under construction. V1.0 will have feature to categorize phone number/url/email/text

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