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“.

Committee Fundamental Startup Terms
What is ToR
August 25, 2016
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What is ToR
ToR means Terms of Reference.
MySQL
MySQL how To – show open database connections
May 15, 2016
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MySQL how To – show open database connections
MySQL Current Connection Query Information You can show MySQL open database connections (and other MySQL database parameters) using the MySQL show status command, like this: mysql> show status like 'Conn%'; +---------------+-------+ | Variable_name | Value | +---------------+-------+ | Connections | 8 | +---------------+-------+ 1 row in set (0.00 sec) mysql> show status like '%onn%'; +--------------------------+-------+ […]
Malaysia Travel
Requirements to get Short Term Malaysia Visa from Bangladesh
May 15, 2016
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Requirements to get Short Term Malaysia Visa from Bangladesh
1. Passport validity not less than 6 months from the time of application. 2. One set of Passport Phtocopy page 1-5 & renewal page if any. 3. One set Visa Application Form completely filled in with original signature as in Passport. 4. Two recent Passports sized color Photograph, plane white back ground (size, 35-55mm). 5. Visa requirement letter in case of employee from employing company for passenger with business as occupation from M.D. or Director of Partner of the company. For students from the Educational Institute or student ID card. 6. Latest Trade License Photocopy. 7. Updated and Original Bank Statement for the last 6 month. Name, seal, Sign of Authorized Person & Bank Solvency Certificate if first time traveler. 8. Visiting Card. 9. Visa processing time 6-8 working days. 10. Hotel Booking & Traveler round trip Air Ticket proof to be presented.
Malaysia Travel
Sample Visa Application to visit Malaysia
May 15, 2016
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Malaysia Visa Application Form Sample
Date: 16-05-2016   To Visa Officer Malaysia High Commission Baridhara, Dhaka   Sub: Request for Issuance of Multiple Entry Visa   Dear Sir This is for your kind information that I ZERIN, Proprietor of Premium Web Cart. I would like to go Malaysia for tourism purpose with my family. During this tour I will bear […]
Java Mac
Java Jar Application Crash fix on MacOSX
May 14, 2016
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Java Jar Application Crash fix on MacOSX
If you use System.currentTimeMillis(); -- do not forget to add the header import java.lang.*;
Commands Linux CentOS MySQL
Linux How to Find Files based on the File Size
May 13, 2016
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If you want to search all the files that are more than 100MB in your linux server /var folder, type thee below command: # find /var -type f -size +100M To Know which directories are taking most spaces of the hard disk, type the below command in your Linux Console: # du -a /var | […]
Linux CentOS MySQL
MySQL: ERROR 1129 (HY000) Host 'Crowder' is blocked because of many connection errors
May 13, 2016
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Type the below command in Linux Console Mode: # mysqladmin flush-hosts
Motivational Quotes of the Day
Quotes of the Day
February 12, 2016
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Quotes of the Day
Actor Chris Pratt shares some words of encouragement to anyone pursuing a dream: Don’t give up. In his Instagram post, Pratt talks about long, sleepless days of filming and the gratitude he feels for being able to do what he loves. But it wasn’t always that way [emphasis mine]: I felt like posting this to […]
Uncategorized
Install H264 Streaming Module for Apache & PHP on CentOS Server
February 10, 2016
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Download & Install First:
MySQL
MySQL Command — Replace, Append command
February 5, 2016
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To append a text after the content for a column: UPDATE `articles` SET introtext= concat(introtext, ‘</div>’);   To add a text before the content for a column: UPDATE `articles` SET introtext= concat(‘<hr class=”system-pagebreak” /><div style=”display:none;”>’,introtext);   To replace text in the content for a column: UPDATE `articles` SET introtext = REPLACE(introtext, ‘<hr class=”system-pagebreak” />’, ‘</div><hr […]