PS1 prompt explained for Linux/Unix

As said in our previous post(Linux booting process) about our up coming posts on Linux prompts. This is first in the series which will give you detail information about PS1 prompt. What is PS1 prompt? PS1 (Prompt String 1) is one of the prompts available in Linux/Unix. When you try to login to any machine, you have(…)

Linux Booting process explained

Knowing Linux booting process is an essential part of every Linux user/administration which will give you a clear picture of how Linux Operating system works. In this post we will see what happens when a Linux OS boots i.e. after powering on the machine to the user login prompt. Below image will give you clear(…)

How to Record your Terminal session in Linux?

  Some times its require to record your terminal sessions for future use or some sort of educational purpose. Recording terminal session can be achieved by installing script command(Most of the distributions install this application by default). If the command is not there try to install the package which provides it. Install script command in Linux(Redhat/Fedora/CentOS) Operating(…)

Linux YUM/RPM: Check which package provides a command or a file

Some times its require to find which package/application provide a command or a file or even a directory in Redhat based machines. yum/rpm commands will come to your rescue to find that. Scenario: Recently we tried to install a command on a different machine which is already installed in one of our machines but not(…)

Linux/Unix: Difference between /dev/null and /dev/zero files

/dev/zero and /dev/null are two pseudo files which are useful for creating empty files. Many people consider there is no difference or puzzled with what could be the difference between two files. There is considerable difference when writing data using these hardware files. /dev/zero: This file is used to create a file with no data(…)

Feb 2013 updates from

Here are last month updates from The Linux Juggernaut updates ( What is KVM virtualization in Linux? Check if a machine runs on 64 bit or 32 bit Processor/Linux OS? KVM Virtualization: Find Hardware support KVM/VMware ESXi or not? KVM virtualization: Install KVM hypervisor in Ubuntu/Debian Linux? KVM virtualization: Install KVM hypervisor in Redhat/CentOS/Fedora(…)

KVM: Get hypervisor and Guest Virtual Machine details?

Managing KVM hypervisor and Virtual machines hosted by it are very much easy if you know what they are capable of. In this post we will see how to view different settings, Hardware info etc for both KVM hypervisor and Guest virtual machine details. Below the concepts already covered in this series. What is Virtualization(…)

KVM: Start/stop/save/restart guest VM’s in Hypervisor?

In this post we will see how to manage guest Virtual Machine through GUI and as well as CLI. KVM have good tools and commands to manage VM’s effectively. For managing VM though GUI we have to use virt-manager tool and through CLI we have to depend on virsh command. Already covered topics in this(…)

KVM: Connect to a virtual machine(SSH, VNC, Console, virt-viewer etc)

In this post we will see on how to connect to a VM through number of ways such as remote connection SSH, VNC and console) and through locally in Hypervisor using tools like virt-viewer and virt-manager. Some of the posts which we already covered are.. What is Virtualization in Linux way? Types of Virtualization available(…)

KVM virtualization: Network(NAT) configuration in KVM hypervisor?

In this post we will see how to set up networking for KVM hypervisor. Networking is an important part in implementing Virtualization as with out networking VM’s can not communicate with each other. Below are the some of the topics covered in this series. What is Virtualization in Linux way? Types of Virtualization available in(…)