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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.

Create a Sudo User on Debian or Ubuntu

Rumi, January 29, 2017

Log in to your server as the root user. ssh root@server_ip_address Use the adduser command to add a new user to your system. Be sure to replace username with the user that you want to create. adduser username Set and confirm the new user’s password at the prompt. A strong…

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Installing SqlMap in Ubuntu / any Linux distro for SQL Injection

Rumi, January 27, 2017

SQLMAP is a automated SQL injection tool which does most of the work for you. If you don’t know what SQL injection is head over here: https://en.wikipedia.org/wiki/SQL_injection Using SQLMAP, you can “hack” many databases in very short time. In the next post, i will show you how to dump database tables…

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All about VPN ports

Rumi, January 26, 2017

1) If RRAS based VPN server is behind a firewall (i.e. a firewall is placed between Internet and RRAS server), then following ports need to be opened (bidirectional) on this firewall to allow VPN traffic to pass through: – For PPTP: IP Protocol=TCP, TCP Port number=1723   <- Used by PPTP control path IP Protocol=GRE (value…

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Increase MySQL connections max_connections

Rumi, January 19, 2017

If you need to increase MySQL Connections without MySQL restart do like below mysql> show variables like ‘max_connections’; +—————–+——-+ | Variable_name | Value | +—————–+——-+ | max_connections | 100 | +—————–+——-+ 1 row in set (0.00 sec) mysql> SET GLOBAL max_connections = 150; Query OK, 0 rows affected (0.00 sec)…

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Learning watch command with examples!

Rumi, January 18, 2017

watch date watch -d date watch -n 10 df -h watch -t date watch echo “‘”‘$$'”‘” watch echo $$ watch -n 0.5 echo $$ watch -n 1 ‘ps -e -o pid,uname,cmd,pmem,pcpu –sort=-pmem,-pcpu | head -15’ watch -d -n 1 ifconfig watch -n 1 tail /var/log/messages watch -d=cumulative date watch “du…

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Fixing error: ‘Access denied for user ‘debian-sys-maint’@’localhost’ (using password: YES)’

Rumi, January 17, 2017

For all you Ubuntu/MySQL developers out there, have you ever seen the following? neo@thematrix:~$ sudo /etc/init.d/mysql restart * Stopping MySQL database server mysqld [fail] * Starting MySQL database server mysqld [ OK ] /usr/bin/mysqladmin: connect to server at ‘localhost’ failed error: ‘Access denied for user ‘debian-sys-maint’@’localhost’ (using password: YES)’ So,…

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Tightvnc setup on Linux Mint

Rumi, January 16, 2017

sudo apt-get install tightvncserver cd ~/.vnc ls nano (or your favorite text editor.) xstartup. edit anything you need to. Then run: tightvncserver Go to your other computer. Run a vnc viewer. And enter in your IP like- <vncserverIP>:1

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Check processor and cpu details

Rumi, January 15, 2017

$ cat /proc/cpuinfo | grep vendor | uniq $ cat /proc/cpuinfo | grep ‘model name’ | uniq $ lscpu $ lscpu | grep -i mhz $ cat /proc/cpuinfo | grep -i mhz | uniq $ watch -n 0.1 “cat /proc/cpuinfo | grep -i mhz” $ cat /proc/cpuinfo | grep processor

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How To Transfer Contacts From iPhone To Android (5 Ways)

Rumi, January 7, 2017

Source: How To Transfer Contacts From iPhone To Android (5 Ways)

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UDP Load Balancing using PEN

Rumi, January 5, 2017

First setup PEN load balancer using this document. After that, keep digging below 🙂 And that’s it, so now if we run pen we see it now has UDP support. root@penudp:~/pen-0.18.0# pen usage: pen [-C addr:port] [-X] [-b sec] [-S N] [-c N] [-e host[:port]] [-t sec] [-x N] [-w…

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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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