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How to rename multiple files on a Mac

February 14, 2019 By Ravi Shankar Leave a Comment

Let us say you are scanning documents using a printer connected to a Mac. And when scanning multiple pages of the same document, the pages gets scanned with the default name followed by a ordered number.

As shown in the above screenshot, the filename starts with Screenshot and prefixed with some numbers.

Rename all files at once

All these files can be renamed all at once using below mentioned steps.

  1. Select all files and right click the selected items.

  2. Select Rename n items options from the listed menus.
  3. Provide a name in the Custom Format field. Let us name this as PropertyDocument.

  4. Enter the start number for the pages then click Rename button.

Now all the files will appear with name as PropertyDocument followed by a number.

Filed Under: Blogging

Code Example – Check for Prime Number Objective C

February 10, 2012 By Ravi Shankar 1 Comment

This is a simple Objective C program written to check whether a number is a Prime number.

//

// main.m

// PrimeNumbers

//

// Created by Ravi Shankar on 10/02/12.

// Copyright (c) 2012 rshankar.com. All rights reserved.

//

#import <Foundation/Foundation.h>

int main (int argc, const char * argv[])

{

@autoreleasepool {

  

int number;

BOOL isPrime=YES;

NSLog (@”Enter a number”);

scanf(“%i”,&number);

for (int i=2; i < number –1; i++)

{

if (number % i == 0)

{

isPrime = NO;

break;

}

}

if (isPrime)

{

NSLog (@”%i is a Prime Number”,number);

}

else

{

   NSLog (@”%i is not a Prime Number”, number);

}

  

}

return 0;

}

Output (as displayed in Xcode console window)

2012-02-10 15:53:52.072 PrimeNumbers[1164:707] Enter a number

23

2012-02-10 15:53:58.665 PrimeNumbers[1164:707] 23 is a Prime Number


2012-02-10 15:54:41.469 PrimeNumbers[1176:707] Enter a number

24

2012-02-10 15:54:44.589 PrimeNumbers[1176:707] 24 is not a Prime Number


This program checks whether the number is divisible by any of the n-1 number and if divisible (% operator returns reminder as 0) then the flag is set to false otherwise it is set to true. Then based on the flag value the message is printed to the console window.


Filed Under: Blogging, Develop, ios Tagged With: Objective C, prime number, Program

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