Ashik E Sadatia – Page 2 – Ashik E Sadatia

Hi, I am Ashik E Sadatia

Have a decade of experience in Information technology & Broadcast Engineering. My core interesting subject is Linux & Cloud computing. Specialist in infrastructure design & implementation.

Securing SSH

Ashik E SadatiaSecurityDecember 12, 2017

Many network services like telnet, rlogin, and rsh are vulnerable to eavesdropping which is one of several reasons why SSH should be used instead. Red Hat’s default configuration for SSH meets the security requirements for many environments. However, there are a few parameters in /etc/ssh/sshd_config that …

Restricting System Access from Servers and Networks

Ashik E SadatiaSecurityDecember 6, 2017

Usually a firewall is used to protect a server from other servers and networks. However, in some cases you may also want to protect a server within a network by using a TCP Wrapper. The Xinetd super server that comes …

LiveUSB MultiSystem – LiveUSB MultiBoot in Linux

Ashik E SadatiaDefaultOctober 20, 2017

Installation into Linux Mint/PinguyOS/ElementaryOS or others Ubuntu distrs: 1. Add repository Terminal Shekin@mylinuxmintpc~$ sudo apt-add-repository 'deb http://liveusb.info/multisystem/depot all main' 2. Add key Terminal Shekin@mylinuxmintpc~$ wget -q -O - http://liveusb.info/multisystem/depot/multisystem.asc | sudo apt-key add - 3. Update sources and Install MultiSystem Terminal Shekin@mylinuxmintpc~$ sudo apt-get update sudo apt-get …

Cheat Sheet: Advanced Linux Commands

Ashik E SadatiaBasicSeptember 27, 2017

As an example scenario, we are going to pretend we are developing a LAMP (Linux, Apache, MariaDB and PHP) application on single machine running Red Hat Enterprise Linux 7. As a first step, we’re going to install Apache, PHP and …

Recover MySQL root password

Ashik E SadatiaRecoveryJune 7, 2017

YOU CAN RECOVER A MYSQL DATABASE SERVER PASSWORD WITH THE FOLLOWING FIVE EASY STEPS: Stop the MySQL server process. Start the MySQL (mysqld) server/daemon process with the –skip-grant-tables option so that it will not prompt for a password. Connect to …

Getting the size of a directory on the command line?

Ashik E SadatiaBasicMay 5, 2017

Here is a function for .bash_aliases (vi ~/.bash_aliases) # du with mount exclude and sort function dusort () { DIR=$(echo $1 | sed 's#\/$##') du -scxh $(mount | awk '{print $3}' | sort | uniq \ | sed 's#/# -- …

Kernel Tuning of Linux web server

Ashik E SadatiaOptimization, SecurityApril 16, 2017

Config /etc/sysctl.conf # Configuration file for runtime kernel parameters. # See sysctl.conf(5) for more information. # See also http://www.nateware.com/linux-network-tuning-for-2013.html for # an explanation about some of these parameters, and instructions for # a few other tweaks outside this file. # …

optimize and speed up linux server

Ashik E SadatiaOptimizationApril 16, 2017

Its a common meditation – think of us that hardware upgrade is the best way to speed up a server. Its like more memory, or cpu cant deliver vetter performance. Hardware upgrades are only a temporary fix. if services / …

Remove packages including unused dependencies on Linux

Ashik E SadatiaOptimizationApril 14, 2017

Very often we install a package just for short usage. Most of the time do these packages install a lot of dependencies along with it. After you don’t require the package anymore you remove it but the dependencies are not …

Vmware template creation : Centos 7

Ashik E SadatiaVirtualizationApril 12, 2017

# some variables export ADMIN_USER=“admin” export ADMIN_PUBLIC_KEY=“your public ssh key” # install necessary and helpful components yum –y install net–tools nano deltarpm wget bash–completion yum–plugin–remove–with–leaves yum–utils # install VM tools and perl for VMware VM customizations yum –y install open–vm–tools …

Hi, I am Ashik E Sadatia

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