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How to capture and analyze packets with tcpdump command on Linux
tcpdump is a well known command line packet analyzer tool. Using tcpdump command we can capture the live TCP/IP packets and these packets can also be saved to a file. Later on these captured packets...
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OpenSUSE Leap 15 installation guide with Screenshots
OpenSUSE Leap 15 is a free and open source operating system that is ideally suited for installing your laptops, desktop and servers for both home and office use. OpenSUSE is considered to be one of the...
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How to Install and Configure Nginx ‘Web Server’ on Ubuntu 18.04 / Debian 9
Nginx is a free and open source web server, it can also be used as reverse proxy, HTTP load balancer, HTTP Cache and mail proxy. Nginx is available for all the Unix like operating systems and released...
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How to Boot Ubuntu 18.04 / Debian 9 Server in Rescue (Single User mode) /...
Booting a Linux Server into a single user mode or rescue mode is one of the important troubleshooting that a Linux admin usually follow while recovering the server from critical conditions. In Ubuntu...
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20 Red Hat Clustering (Pacemaker) Interview Questions and Answers
Deploying services in high availability is one of the most important and complex task for Linux geeks. Red Hat clustering a.k.a Pacemaker is used to configure the services like NFS, Apache, Squid and...
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How to Install Open Source Zimbra Mail Server (ZCS 8.8.10) on CentOS 7
Mail Server is one of the important and critical Server for any organization as most of business communication done via emails only. In Open source world there are couple of free email server but...
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Elementary OS 5.0 (Juno) Installation Guide with Screenshots
Good News for Linux Desktop geeks, recently Elementary OS 5.0 also known as Juno has been released. Elementary OS is one of the exciting Linux distribution based on Ubuntu. It comes with own pantheon...
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Top 30 OpenStack Interview Questions and Answers
Now a days most of the firms are trying to migrate their IT infrastructure and Telco Infra into private cloud i.e OpenStack. If you planning to give interviews on Openstack admin profile, then below...
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How to Install VirtualBox and Extension Pack on Elementary OS 5.0 (Juno)
VirtualBox is a free and open source Virtualization tool that allows to run multiple virtual machines at same time on your Linux and Windows desktop or laptop. VirtualBox is generally used at desktop...
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How to Install and Configure FreeIPA on CentOS 7 Server
FreeIPA is a free and open source identity management tool, it is the upstream project for Red Hat identity manager. Using FreeIPA tool, we can easily manage centralized authentication along with...
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How to Configure FreeIPA Client on Ubuntu 18.04 / CentOS 7 for Centralize...
In our previous article we have already discussed about FreeIPA and its installation steps on CentOS 7 Server, in this article we will discuss how an Ubuntu 18.04 and CentOS 7 machine can be integrated...
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How to Generate sosreport on Ubuntu 18.04 / Debian 9 Server
SOS is a tool which is used to collect all the system configuration, logs and diagnostic information and archive it into a single file. Sosreport is generally required for technical support engineers...
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How to Install VirtualBox 6.0 on Ubuntu 18.04 LTS / 18.10 / CentOS 7
As we all of know that VirtualBox is the most commonly used virtualization tool used at desktop level, In other words we can say it is a cross platform virtualization software which is used to create...
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12 Useful ‘dmidecode’ Command Examples for Linux Systems
Dmidecode is a tool or command which is used to retrieve the useful information of your system’s hardware components in human readable format. Dmidecode is available for all the Linux like systems...
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OpenStack Deployment using Devstack on CentOS 7 / RHEL 7 System
Devstack is a collection of scripts which deploy the latest version of openstack environment on virtual machine, personal laptop or a desktop. As the name suggests it is used for development...
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How to Resize OpenStack Instance (Virtual Machine) from Command line
Being a Cloud administrator, resizing or changing resources of an instance or virtual machine is one of the most common tasks. In Openstack environment, there are some scenarios where cloud user has...
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Install and Configure Kubernetes (k8s) 1.13 on Ubuntu 18.04 LTS / Ubuntu 18.10
Kubernetes is a free and open source container orchestration tool. It is used to deploy container based applications automatically in cluster environment, apart from this it also used to manage Docker...
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16 Useful ‘cp’ Command Examples for Linux Beginners
Being a Linux user, copying files and directories is one of the most common day to day operations task.cp command is used to copy the files and directories from one local place to another using command...
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Quick guide to Install and Configure Ceph (Distributed Storage) Cluster on...
Ceph is free and open source distributed storage solution through which we can easily provide and manage block storage, object storage and file storage. Ceph storage solution can be used in traditional...
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Top 8 Video Players for Your Linux Desktop
Gone are the days when Linux systems are mainly used for Server-side functionalities as the latest distributions released are well-advanced and are specially designed to capture the attention of home...
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