Hello. My name is A.R. ZERIN. I am an Entrepreneur, Technology Optimist and a Software Engineer from Dhaka, Bangladesh .
Programming is my passion. Life is beautiful, so I am trying hard to enjoy it.
I have completed my Undergraduate Degree in Computer Science & Engineering at 2004 and working in the era of IT for last 14+ years dedicatedly.
I am a believer of, “He who aims at the sky, shoot higher much than he who aims at a tree“.

CodeIgniter Framework Coding
CodeIgniter: How To Call A Controller from another Controller
October 2, 2015
0
Suppose you have two controllers file, one is users.php and another one is welcome.php. For some reason, you want to load the a function from users controller from inside the controller welcome. Write the below code in your welcome controller file: $this->load->library('../controllers/users'); $this->users->function_name();
Email Server
How To Add DKIM for a Domain
October 1, 2015
0
1. First You will have to create keys, follow the below instruction Browse the Site: https://www.port25.com/support/domainkeysdkim-wizard/ Type the Domain Name: arzerin.com Domain Key Selector: default (if you want something different for example “mail”, you can type mail) Set Key Size: 2048 Upon Clicking The “CREATE KEYS” Button, you will receive “Public Key” and “RSA Private […]
Commands
Finding Last 5 Modified Files of a Folder
October 1, 2015
0
Try using head or tail. If you want the 5 most-recently modified files: ls -1t | head -5 ls -1t | tail -5  
Lifestyle
Days First 20 Minutes
September 3, 2015
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The 20 minutes you spend today can save hours tomorrow and turn a good day into a great day. Everyone knows that the most valuable resource entrepreneurs have is time. So stop giving it away to people and spending it on activities you don’t care about. People say if only there were more hours in […]
Speed Web
Checking Site Speed
August 25, 2015
0
To Check any of my side speed, I use the below 3 tools that are free: 1. Google PageSpeed (http://developers.google.com/speed/pagespeed/insights/) 2. Pingdom Tools (http://tools.pingdom.com/) 3. GTmetrics (http://gtmetrix.com/)  
Commands Tips & Tricks
How To Copy SVN Project From One Host to Another Host
August 23, 2015
0
Today I need to move the whole SVN to a new server  that is under different IP. I have followed the below step-by-step process. My Current PC IP: 192.162.0.1 New PC IP: 192.162.0.2 MacOSX Command: 1. need to login the old server  and run the below command in your command console: First Run the below Command in […]
Commands
How To Relocate Your MAC Project SVN
August 23, 2015
0
Our Project SVN Folder was moved recently from one Host to another Host. I was looking for the command solution to change the SVN Location of the project that are dumped in my MACOSX. Now, I have found it what command I need to run. 1. Run command prompt 2. cd to the project folder. […]
Inspired People
A.P.J. Abdul Kalam & His Great Dialogues
July 29, 2015
0
Inspired People Life Lifestyle Startup
5S System
July 23, 2015
0
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Uncategorized
how to make usb bootable yosemite
June 5, 2015
0
sudo /Applications/Install\ OS\ X\ Yosemite.app/Contents/Resources/createinstallmedia –volume /Volumes/MyVolume –applicationpath /Applications/Install\ OS\ X\ Yosemite.app
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