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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.

Clear RAM Memory Cache, Buffer and Swap Space on Linux

Rumi, May 9, 2018July 14, 2020

Clear PageCache only # sync; echo 1 > /proc/sys/vm/drop_caches Clear dentries and inodes # sync; echo 2 > /proc/sys/vm/drop_caches Clear PageCache, dentries and inodes # sync; echo 3 > /proc/sys/vm/drop_caches

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Add a New Disk in Linux- Partition and Format

Rumi, May 9, 2018

Partition the new disk using fdisk command Following command will list all detected hard disks: # fdisk -l | grep ‘^Disk’ Output: Disk /dev/sda: 251.0 GB, 251000193024 bytes Disk /dev/sdb: 251.0 GB, 251000193024 bytes A device name refers to the entire hard disk. For more information see Linux partition naming…

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Perfect FTP Server for Debian or Ubuntu

Rumi, May 9, 2018

This installation was performed on a Ubuntu 14.04 distribution system. While there are a variety of FTP server tools available for Linux, one of the most popular and mature options is vsftpd. Begin by SSHing into your server as root and use the apt-get command to install vsftpd: apt-get update…

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Linux Router- No NAT

Rumi, May 7, 2018

I assume you have one public IP address for your WAN side, and a block for the LAN side, something like this: ISP—–ROUTER ETH0/ROUTER ETH1——SWITCH——PCs You NEED to have a public IP address for the WAN interface, ISP will route the subnet they have given you through this IP address….

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PHP Session test Script

Rumi, May 6, 2018May 6, 2018

I’ve just found a quality script to test php session- unless you’re in dark after some php.ini session tweaking done. To check if sessions really work you can use this code: <?php // Start Session session_start(); // Show banner echo ‘<b>Session Support Checker</b><hr />’; // Check if the page has…

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Install Proxmox VE on Debian 9 – Stretch

Rumi, May 5, 2018June 2, 2018

The installation of a supported Proxmox VE server should be done via Bare-metal_ISO_Installer. In some case it makes sense to install Proxmox VE on top of a running Debian Stretch 64-bit, especially if you want a custom partition layout. For this HowTO the following Debian Stretch ISO was used: Install a…

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Upload Directory Tree To Remote FTP Server Recursively using NCFTP

Rumi, May 5, 2018

Install ncftp client Type the following apt-get command under Debian / Ubuntu Linux to install ncftp client, run: $ sudo apt-get install ncftp If you are RHEL / CentOS / Fedora Linux user, type the following yum command to install ncftp client (first turn on EPEL repo): # yum install ncftp Syntax and examples:…

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Proxmox User Management- Proxmox VE authentication server

Rumi, May 4, 2018

Command Line Tool Most users will simply use the GUI to manage users. But there is also a full featured command line tool called pveum (short for “Proxmox VE User Manager”). Please note that all Proxmox VE command line tools are wrappers around the API, so you can also access…

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Fixing phpmyadmin login on MySQL 5.7 and Debian 9

Rumi, May 4, 2018

Once setting up the LAMP stack, you must be wondering to see that you no longer been able to login phpmyadmin using root credentials. MySQL 5.7 changed the secure model: now MySQL root login requires a sudo (while the password still can be blank). I.e., phpMyAdmin will be not able…

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How to disable Network Manager on Linux

Rumi, May 4, 2018March 8, 2019

First Check if NetworkManager is running on Ubuntu / Debian Usually you should be using NetworkManager by default (Ubuntu 14.04), just in case you want to be sure, use this command to verify: dpkg –get-selections | grep network-manager In case there is some output like: network-manager install it is installed,…

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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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