To change the hostname on a SUSE Linux system without using yast, you can use the following terminal commands: Open a terminal or SSH into your SUSE Linux system Backup the current /etc/HOSTNAME file: cp /etc/HOSTNAME /etc/HOSTNAME.bak Open the /etc/HOSTNAME file in a text editor: nano /etc/HOSTNAME Change the current hostname to the desired hostname: … Read more

You can print the filename using the FILENAME variable in awk. Here’s an example: awk ‘{ print FILENAME “: ” $0 }’ file1 file2 This command will print the content of file1 and file2, each line prefixed by the filename. You can also use the ARGV array to iterate over all the files passed as … Read more

To install Nginx on SUSE Linux Enterprise server 12, follow these steps: Add the Nginx repository to the system: sudo zypper addrepo http://nginx.org/packages/sles/12/x86_64/ nginx Refresh the package list: sudo zypper refresh Install Nginx: sudo zypper install nginx Start the Nginx service: sudo systemctl start nginx Enable Nginx to start automatically at boot time: sudo systemctl … Read more

To set up and configure a network bridge on Debian Linux, follow these steps: Install the required packages: sudo apt-get update sudo apt-get install bridge-utils -y Create a backup of your network interfaces configuration file: sudo cp /etc/network/interfaces /etc/network/interfaces.bak Edit the network interfaces configuration file: sudo nano /etc/network/interfaces Define the network bridge, replace eth0 with … Read more

To install KVM server on a Debian 9/10 headless server, follow these steps: Install the required packages: sudo apt-get update sudo apt-get install qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils virtinst -y Add your user account to the libvirtd group: sudo adduser $USER libvirtd Verify that the KVM module is loaded: lsmod | grep kvm Start the libvirtd … Read more

To install VLC 3 (Vetinari) on a Linux system, follow these steps: Add the VLC repository to your system’s package manager: For Debian/Ubuntu: sudo add-apt-repository ppa:videolan/master-daily For Fedora: sudo dnf config-manager –add-repo https://download.videolan.org/pub/vlc/fedora/vlc.repo For openSUSE: sudo zypper addrepo https://download.videolan.org/pub/vlc/opensuse/ vlc Update the package list: sudo apt-get update (Debian/Ubuntu) sudo dnf update (Fedora) sudo zypper update … Read more

Here’s how to reset the root password for a Linux KVM virtual machine in a qcow2 image: Stop the virtual machine: To reset the root password, you need to stop the virtual machine first. You can stop it using the following command: virsh shutdow [VM_NAME] Convert the qcow2 image to raw format: To reset the … Read more

Here’s how to create an EC2 key using Ansible: Install the AWS CLI: To use Ansible with AWS, you need to have the AWS CLI installed. You can install it using the following command: pip install awscli Configure the AWS CLI: You need to configure the AWS CLI with your AWS credentials. You can do … Read more

The Meltdown vulnerability is a hardware-level security issue that affects many modern processors. To patch the Meltdown vulnerability on OpenBSD Unix, you can follow these steps: Upgrade to the Latest Version of OpenBSD: OpenBSD releases regular security patches to address vulnerabilities, including Meltdown. To upgrade to the latest version of OpenBSD, use the following command: … Read more

Memcached is a distributed memory caching system that is commonly used to speed up dynamic websites. However, it has also been used as a tool in DDoS amplification attacks. To secure a Memcached server and prevent DDoS amplification attacks, you can follow these steps: Limit Access to the Memcached Server: Restrict access to the Memcached … Read more