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Top 5 Basic Steps to Troubleshoot Network in Linux

by Free Linux
7 min read
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1.Find if your interface has IP address, it’s either obtained dynamically via DHCP server or manually configured using static configuration. You can either use commands from the “iproute”  or...

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Top 5 Commands to Find IP address in Linux

by Free Linux
3 min read
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These are the commands that can be used to find the private or public IP address in your interface(s). If your IP is NAT’ed and want to find the public IP, refer to this tutorial –> Quick Tip: Get or Find your...

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Securing SSH using Firewalld on RHEL8 or CentOS8 Replacing TCP_Wrappers

by Free Linux
4 min read
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As per Redhat official document titled “”Replacing TCP Wrappers in RHEL 8”  ( ), it says: The TCP Wrappers package has been deprecated in RHEL 7 and therefore it will not be available in RHEL 8 or later RHEL...

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Installation of CentOS 8 on Ubuntu Server KVM

by Free Linux
7 min read
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Assumptions: A.  Kernel-based Virtual Machine or KVM package is already installed on your Ubuntu Server Verify: dpkg -s qemu-kvm Sample output: root@ubuntuserver1:~# dpkg -s qemu-kvm Package: qemu-kvm Status: install ok...

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Fixing KVM guest virsh console hangs at Escape character

by Free Linux
2 min read
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virsh is a tool to manage virsh guest domains and the command “virsh console [domain id/name]” can be use to connect the virtual serial console for the guest. But sometimes the connection with the serial console ...

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Top 10 Basic virsh commands for KVM Hypervisor management

by Free Linux
3 min read
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The virtual shell or  virsh program is the main interface for managing virsh guest domains. This program can be used to list, create, pause, and shutdown domains. 1. Display information about the hypervisor virsh nodeinfo Sample...

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Top 20 Must Know Basic Commands in Linux with Examples Part 2

by Free Linux
8 min read
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11. chmod-command to change file mode bits. This is used to assign or change permissions of files and directories. We need to understand first the file permission Three types of permissions (can assign using the text(r,w,x) or...

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Top 20 Must Know Basic Commands in Linux with Examples Part 1

by Free Linux
9 min read
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Here’s the list of basic commands a Linux user  needs to know and familiarize  for them to feel comfortable in working with command line interface/shell/terminal. We all know that mostly all Linux distribution now comes...

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Authenticating Ubuntu Client to Windows Active Directory

by Free Linux
5 min read
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I got the chance to configure one of the old system of my friend running Windows 2000 and Ubuntu 7, (yes it’s not typo) and he wants to authenticate some of his old Ubuntu PCs to Windows AD. Here’s the tutorial for...

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Installation of KVM( Kernel-based Virtual Machine) Virtualization and Eve-NG in CentOS

by Free Linux
4 min read
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Installation of KVM and Eve-NG  Kernel-based Virtual Machine or KVM is an open source virtualization solution that can make your Linux Server as hypervisor. I will demonstrate also how to install Virtual Machine (VM), for...

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