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Author: Rumi

Hasan T. Emdad is an ICT Solution Architect, Project Manager with 12+ year expertise in HW selection, OS expertise on Linux and MS, Supervising Application SW on Pearl, Java, dot Net and PHP with DB experience of MySQL, Postgre, MS and Oracle. He was involved in setting up several Turn Key ICT including Telecom based projects on various government and autonomous bodies in the country. Developed more than 50 applications running with different operators and users. Managing a team of more than 10 in-house engineers and developers and manages an outsourcing team experts and contributors. Very recently engineered Public Key Infrastructure (PKI) on Enterperise and Root Certifying Authority and deployed scalable Cloud Computing and Managed Services. He has post graduated (MBA) from University of Dhaka, Bangladesh.

Yum Cache Clear command

Rumi, June 6, 2014

When a package is downloaded, installed and is removed there is a chance that the package may still be saved/stored in the yum’s cache. So to clean all the cached packages from the enabled repository cache directory, login as root and execute the following: yum clean packages To purge the…

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Change Windows RDP default listening port 3389

Rumi, June 6, 2014

Start Registry Editor. Locate and then click the following registry subkey: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\TerminalServer\WinStations\RDP-Tcp\PortNumber On the Edit menu, click Modify, and then click Decimal. Type the new port number, and then click OK. Quit Registry Editor. Restart the computer. Note When you try to connect to this computer by using the Remote…

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Set date/time permanently on Virtualbox Guest

Rumi, June 6, 2014October 5, 2019

First you need to ssh to the server and be root and then do these step by step: 1. Set the date/time as following format date -s “2 OCT 2013 18:00:00″ 2. Set the proper Timezone for your area- # cd /etc # ln -sf /usr/share/zoneinfo/EST localtime 3. Set it…

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LAMP on CentOS

Rumi, June 6, 2014September 8, 2016

Installing MySQL 5 To install MySQL, we do this: yum -y install mysql mysql-server Then we create the system startup links for MySQL (so that MySQL starts automatically whenever the system boots) and start the MySQL server: chkconfig –levels 235 mysqld on /etc/init.d/mysqld start Set passwords for the MySQL root…

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Fix Date Time on PVE OpenVZ Guest machine

Rumi, June 6, 2014

Stop VE vzctl stop 101 in HD node, run: vzctl set 101 –capability sys_time:on –save Start VE: vzctl start 101 Enter VE: vzctl enter 101 mv /etc/localtime /etc/localtime.old ln -s /usr/share/zoneinfo/Asia/Dhaka /etc/localtime date 092115442006 (09 = Month, 21 = day, 15 = hour, 44=minutes, 2006 = year) Run date to…

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Update PHP 5.4 on Debian 6 Squeeze

Rumi, June 6, 2014

Set up Dotdeb First add Dotdeb to your Apt sources: sudo vim /etc/apt/sources.list /etc/apt/sources.list deb http://packages.dotdeb.org squeeze all deb-src http://packages.dotdeb.org squeeze all deb http://packages.dotdeb.org squeeze-php54 all deb-src http://packages.dotdeb.org squeeze-php54 all Save & Exit. Now go for the next-

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Reinstall Openssh server on Debian 6/7

Rumi, June 6, 2014

Linux: Debian / Ubuntu Linux Remove SSHD Server Type the following commands: # apt-get –purge remove openssh-server Now reinstall the openssh again using- # apt-get install openssh-server Voila Src: http://www.cyberciti.biz/faq/howto-unix-linux-remove-delete-opensshd-server/

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Install Phalcon framework in Debain 6/7

Rumi, June 6, 2014

This repo can be used additionally to the squeeze-php54 repo of dotdeb.org. Add the following into /etc/apt/sources.list deb http://debrepo.frbit.com/ frbit-squeeze main Add the key, update apt and install packages wget -O – http://debrepo.frbit.com/frbit.gpg | sudo apt-key add – aptitude update aptitude install php5-igbinary php5-mongo php5-oauth php5-phalcon php5-runkit php5-stats php5-stomp php5-yaf…

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২৫ এর পর যা সত্যি

Rumi, June 6, 2014

বয়স কি পঁচিশ পেরিয়েছে? যদি আপনার বয়স পচিশ পার হয়ে গিয়ে থাকে তাহলে ইতিমধ্যেই আপনি জেনে গিয়েছেন অনেকগুলো সত্য। যেই বিষয়গুলো আগে অর্থহীন মনে হতো অথবা তেমন একটা গুরুত্ব দিতেন না সেগুলোই হয়তো এখন অনেক বেশি গুরুত্বপূর্ণ আপনার কাছে। আবার যেগুলোকে জীবনের সবচাইতে জরুরি মনে হত এমন অনেক কিছুই হয়তো…

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Reset root password in Centos/Redhat/SL linux

Rumi, June 6, 2014

1. Boot the system and when you see the following message “Press any key to enter the menu”, press any key. (You will see the list of available kernel versions.) 2. Press e in order to edit commands before booting. 3. Highlight the list item with vmlinuz in it by…

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Myself…

Hi, I am Hasan T. Emdad Rumi, an IT Project Manager & Consultant, Virtualization & Cloud Savvyfrom Dhaka, Bangladesh. I have prior experience in managing numerous local and international projects in the area of Telco VAS & NMC, National Data Center & PKI Naitonal Root and CA Infrastructure. Also engaged with several Offshore Software Development Team.

Worked with Orascom Telecom-Banglalink, Network Elites as VAS partner, BTRC, BTT (Turkey) , Mango Teleservices Limited and Access to Informaiton (A2I-UNDP)

Currently working at Oracle Corporation as Principal Technology Solution and Cloud Architect.

You can reach me [h.t.emdad at gmail.com] and I will be delighted to exchange my views.

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Apache Bind Cacti CentOS CentOS 6 CentOS 7 Debain Debian Debian 10 Debian 11 Debian 12 DKIM Docker endian icinga iptables Jitsi LAMP Letsencrypt Linux Munin MySQL Nagios Nextcloud NFS nginx pfsense php Postfix powerdns Proxmox RDP SSH SSL Ubuntu Ubuntu 16 Ubuntu 18 Ubuntu 20 Varnish virtualbox vpn Webmin Windows 10 XCP-NG zimbra

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