To update OpenSUSE Linux software and kernel using the command line, you can use the “zypper” command. First, update the package index by running: sudo zypper refresh Then, update all installed packages by running: sudo zypper update You can also update specific packages by specifying their names after the “update” command. To update the kernel, … Read more

You can define an SSH key per host using the ansible_ssh_private_key_file variable in Ansible. This variable allows you to specify a different private key file for each host or group of hosts. Here is an example of how you can use the ansible_ssh_private_key_file variable in your inventory file: [web-servers] web1 ansible_host=192.168.1.100 ansible_ssh_private_key_file=~/.ssh/web1.pem web2 ansible_host=192.168.1.101 ansible_ssh_private_key_file=~/.ssh/web2.pem … Read more

Setting up SSH keys on a Red Hat Enterprise Linux 8 (RHEL 8) system allows you to log in to a remote server without having to enter a password. Here is an overview of the steps to set up SSH keys on RHEL 8: Start by creating a new key pair on your local machine. … Read more

To upgrade Ubuntu 16.04 to 18.04 LTS using the command line interface (CLI), you can follow these steps: Make sure your system is fully updated by running the following command: sudo apt update && sudo apt upgrade Back up your system before you begin the upgrade process. This is important to ensure that you can … Read more

Memcached is a high-performance distributed memory caching system that can be used to speed up dynamic web applications by reducing the amount of time required to load data from a database. Here is an overview of the steps to install and configure Memcached on Ubuntu 18.04/20.04: Start by updating the package list: sudo apt update … Read more

UFW, or Uncomplicated Firewall, is a command-line firewall tool for Ubuntu 18.04 LTS servers. Here is an overview of the steps to set up a UFW firewall on an Ubuntu 18. (drugstore com online pharmacy prescription drugs) 04 LTS server: Start by updating the package list: sudo apt update Install the UFW package: sudo apt … Read more

To configure a static IP address on Red Hat Enterprise Linux (RHEL) 8, you can follow these steps: Open the /etc/sysconfig/network-scripts/ifcfg-interface file, where interface is the name of the network interface you want to configure. For example, if you want to configure the eth0 interface, you would open the /etc/sysconfig/network-scripts/ifcfg-eth0 file. Change the BOOTPROTO line … Read more

Cockpit is a web-based interface for managing servers running Red Hat Enterprise Linux (RHEL) 8. Here is an overview of the steps to install and activate Cockpit on RHEL 8: Install the Cockpit package using the dnf package manager: sudo dnf install cockpit Start the Cockpit service: sudo systemctl start cockpit.socket Enable the Cockpit service … Read more

In Bash, you can read the names of files from a text file and take action on them using a while loop and the read command. Here’s an example of how you might do this: #!/bin/bash # The name of the file containing the list of file names file_list=”files.txt” # Open the file and read … Read more

When using wget on FreeBSD to download a file from a website with a Let’s Encrypt SSL certificate, you may encounter an error that the certificate cannot be verified. This can occur if the root CA certificate for Let’s Encrypt is not installed on your system. To resolve this issue, you can install the Let’s … Read more