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Set Up Apache Virtual Hosts on Debian 7

Rumi, July 29, 2019

Step One— Create a New Directory First, it is necessary to create a directory where we will keep the new website’s information. This location will be your Document Root in the Apache virtual configuration file. By adding a -p to the line of code, the command automatically generates all the…

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Change the listening port for RDP on your computer- Windows 10, Windows 8.1, Windows 8, Windows Server 2019, Windows Server 2016, Windows Server 2012 R2, Windows Server 2008 R2

Rumi, July 29, 2019

When you connect to a computer (either a Windows client or Windows Server) through the Remote Desktop client, the Remote Desktop feature on your computer “hears” the connection request through a defined listening port (3389 by default). You can change that listening port on Windows computers by modifying the registry….

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How to copy files using no owncloud web interface

Rumi, July 22, 2019July 22, 2019

Migrating was instant since we’re moving on the local fs. Checking the above screenshot you can see the rights are still the same of course. Own the folders to the ownCloud user and change the permissions to octal 755: # Recursively own the folder to www-data sudo chown -R www-data:www-data…

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Increasing Attachment Size in Posfix

Rumi, July 19, 2019

Postfix by default restrict attachment size to approx 10MB i.e. 10240000 bytes. You can check it using following command: postconf | grep message_size_limit To change attachment-size to say 50 MB, run a command like: postconf -e message_size_limit=52428800 Note: If you are running a mail-server with SMTP/IMAP access, you need to change…

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Install Poppassd in CentOS 7

Rumi, July 19, 2019November 15, 2019

Steps for configuration change password plugin for squirrelmail/Horde/Rainloop using poppassd are: Download poppassd.c from https://netwinsite.com/poppassd/ Look at poppassd.c and make sure it looks safe yum -y install gcc gcc poppassd.c -o poppassd -lcrypt mv poppassd /usr/local/bin/ yum -y install xinetd cp /etc/xinetd.d/time-stream /etc/xinetd.d/poppassd nano /etc/xinetd.d/poppassd Update “service time” to “service…

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DNS Slave Using Virtualmin

Rumi, July 19, 2019

DNS Slave Auto-Configuration Quickstart A quick guide to assist administrators who want to use Virtualmin’s automatic DNS slave configuration features. This allows for DNS server redundancy. Introduction Virtualmin can automatically manage any number of DNS slave servers for you. Once configured, it will create slave zones on other servers and…

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Reset Ubuntu 12 root password

Rumi, July 19, 2019

Boot up the machine, and after the BIOS screen, hold down the left Shift key. You will then be prompted by a menu that looks something like this: Hit the down arrow until you select the 2nd entry from the top (the one with the recovery mode in the description)…

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I’m on top of the world! ICC Cricket World Cup-2019

Rumi, June 7, 2019
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Force reboot of a remote Linux machine

Rumi, June 6, 2019

To force the kernel to reboot the system we will be making use of the magic SysRq key. The magic_SysRq_key provides a means to send low level instructions directly to the kernel via the /proc virtual file system. To enable the use of  the magic SysRq option type the following…

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Add a Static Route on CentOS

Rumi, May 30, 2019

To add a temporary route: ip route add 172.16.5.0/24 via 10.0.0.101 dev eth0 To make it persist system or network settings restart, create a route-ifname file for an interface through which the subnet is accessed, in this case eth0: nano /etc/sysconfig/network-scripts/route-eth0 Add the line with the network settings for the other subnet:…

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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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