Using expr command-line utility in Bash Scripting Language to Calculate Mathematical expressions

In our last post "NUMBERS AND MATHS IN BASH SHELL SCRIPTING LANGUAGE", we saw the use of 'let' utility to perform mathematical calculations. Here in this tutorial...

3 Ways to create Swap in Linux

If you have a low RAM memory the swap partitions are the best solutions for you. swap is like  virtual memory  used when RAM is above 100%...

Server Monitoring with Elasticsearch

This article will go through the steps of monitoring a Linux server with Elasticsearch, Beats and Kibana. this  article  should  work in all Linux Systems.  its  quit...

RHCSA Understand and use essential tools PART 1

One of the most famous certificate in world of Linux is RHCSA  Redhat Certified  System Administrator  . There is many tutorials and books online to use  them....

Lsof 9 practical examples in Linux

As we all know that everything in Linux OS  is consist of file( library files, pipes, socket, device and .etc). Lsof meaning that is knowing  as “list...

How to Manage Kernel Modules in Linux

When we install Linux Like operating system at that time Linux kernel install most of device driver’s modules and after the installation it also allows us to...

Top 10 things to do after installing Ubuntu 16.10

To get maximum out of Ubuntu 16.10 users needs to get some tweaks. In this article we list the minimal things which a user should consider to...

netstat top 10 commands

Netstat is one of the most used commands by   system admins to checks the network and protocols  related to his machine. you can also list out...

Install DNS server Master and Slave on Centos 7

DNS server or The Domain Name System (DNS) is a hierarchical decentralized naming system for computers, services, or any resource connected to the Internet or a private...

Reset root password RHEL7 Redhat official way

Reset root password is one of the daily tasks of an system administrator its  also the key to questions of  RHCSA exam and RHCE, because  you are ...

OpenStack installation and configuration

In this article, I will explore how to install and configure OpenStack in an easy way. Let start to discuss OpenStack little bit. It is a broad and...

How to install Ubuntu Server 16.10 Including LAMP

Ubuntu 16.10 is  just  released.  there is many improvements and patches released sins last  release 16.04. many  people have the choice to install  the Linux Server because...

how to install Kernel 4.8 in Centos

The Kernel 4.8 has been releases  finally  after many months of  development . please  the  last release  note  from this  link https://lkml.org/lkml/2016/10/2/102 To make this  upgrade possible  we  need...

Upgrade from Ubuntu 16.04 to Ubuntu 16.10

With the release of Ubuntu 16.10, the new beast is out with  release name "Yakkety Yak". The new version of Ubuntu 16.10 can be download from official...

Python String Methods

Python has a built-in string class named "str" with many handy features, an literal string can be enclosed by single or double quotes , but stay  the ...

How to configure PXE server with Ubuntu 16.04

In an big IT environment when there are more then 100 of machines and you have to install Ubuntu on them. If you will think of using...

Full automated Nagios

The purpose of this article is to show how to automatically install the Nagios server and the NRPE clients using the prearranged python scripts. First of all, you...

Numbers and Maths in Bash Shell Scripting Language

If you missed going through the previous post Starting with Bash/Shell Scripting Language, I would suggest you to walk through it. Here in this post we will...

Nagios Server and Client the Hard way

Nagios is a powerful monitoring system that enables organizations to identify and resolve IT infrastructure problems before they affect critical business processes. Comprehensive Monitoring Capabilities to monitor applications,...

FreeBSD 11 ooh Finally !!

The  World of Unix is waiting of this Release Freebsd 11 and from long time, after years and years enjoying the Stable Freebsd 10.  new release arrived...