To install the Memcached Object Cache plugin for WordPress and speed up your blog, you can follow these steps: Install the Memcached server on your web server if it’s not already installed. You can use the following command to install Memcached on a system running CentOS or Red Hat Enterprise Linux: sudo yum install memcached … Read more

To remove the GDM (GNOME Display Manager) graphical login screen on CentOS or Red Hat Enterprise Linux, you need to uninstall the gdm package using the yum package manager. First, use the following command to check if GDM is installed: yum list installed | grep gdm If the package is installed, you can remove it … Read more

The OpenSSH server can be configured to hide its version number from clients, making it more difficult for attackers to target known vulnerabilities in specific versions of the software. This can be done by editing the OpenSSH server configuration file, usually located at /etc/ssh/sshd_config. To hide the version number, add the following line to the … Read more

You can use the grep command with the -H option to display the file name along with the matching lines. For example, to search for a pattern in multiple files and display the file name, you can run the following command: grep -H ‘pattern’ file1 file2 file3 In this example, pattern is the string you … Read more

To play an audio CD using the Linux command line with mplayer, you can use the following command: mplayer cdda:// This will launch mplayer and start playing the audio CD that is currently inserted in your CD drive. You can control playback using the standard mplayer controls, such as p to pause and q to … Read more

The error message “Missing Dependency: xen-libs” indicates that the package you are trying to install or update depends on another package called xen-libs but it is not installed on your system. To resolve this issue, you need to install the xen-libs package. You can do this by running the following command: sudo yum install xen-libs … Read more

The process of installing LibreOffice on Linux depends on the specific Linux distribution you are using. Here are the steps for installing LibreOffice on some popular Linux distributions: Ubuntu: sudo apt-get update sudo apt-get install libreoffice Fedora: sudo dnf install libreoffice CentOS: sudo yum install libreoffice Debian: sudo apt-get update sudo apt-get install libreoffice Arch … Read more

The mail command in Unix/Linux can be used to send emails from the command line. Here’s an example of how to use the mail command in a shell script: #!/bin/bash to=”recipient@example.com” subject=”Test Email” message=”This is a test email sent from the shell script.” echo “$message” | mail -s “$subject” “$to” In the example above, the … Read more

To add two numbers in Unix or Linux using awk, you can use the following command: awk ‘BEGIN {print [number1] + [number2]}’ Replace [number1] and [number2] with the two numbers you want to add. For example, to add the numbers 10 and 20, you would use the following command: awk ‘BEGIN {print 10 + 20}’ … Read more

To start VNC remote access for a guest operating system in KVM virtualization, you need to follow these steps: Install a VNC server in the guest operating system: You need to have a VNC server installed in the guest operating system so that you can access it remotely. There are several VNC servers available, including … Read more