To add a new user account with admin access on Linux, use the useradd command followed by the -G option and the group name “sudo” or “admin”. For example: sudo useradd -m -G sudo newuser This will create a new user named “newuser” and add them to the “sudo” group, giving them admin access. Next, … Read more
SSH key-based authentication is a more secure way to log in to a remote server than using a password. It uses a pair of private and public keys to authenticate the user, rather than a password. In this way, only the user who has the private key can log in to the server. Here are … Read more
The product key for Windows 10/11 OEM (Original Equipment Manufacturer) is typically stored in the firmware of the device. You can use the following command on Linux to retrieve the product key: sudo cat /sys/firmware/acpi/tables/MSDM This command will print the product key in the output. You can also use the following command to extract the … Read more
To configure Nginx with Let’s Encrypt on CentOS 8 Install certbot: sudo yum install certbot-nginx Obtain a SSL certificate: sudo certbot –nginx Follow the prompts to enter your email address and agree to the terms of service Choose the domain name you want to generate the certificate for. The certbot will configure Nginx to use … Read more
There are several ways to count the number of processes running on a Linux system. Here are a few methods: Using the ps command: The ps command provides a snapshot of the current processes on the system. To count the number of running processes, you can use the following command: ps -e | wc -l … Read more
To update installed packages for security on CentOS 8/9, you can use the yum command as the root user or with sudo. Update the package index by running the command sudo yum update. This command will update all installed packages to the latest version. You can also update specific packages by providing the package name … Read more
The Santa hat feature in VLC Player is a holiday-themed overlay that can be enabled during the Christmas season. To remove the Santa hat permanently in VLC Player, you can follow these steps: Open VLC Player on your computer. Click on the “Tools” menu, then select “Preferences.” In the “Preferences” window, select “All” under “Show … Read more
To install the tar utility on a Red Hat Enterprise Linux (RHEL) or CentOS 6/7/8 system using the yum package manager, you can use the following command: sudo yum install tar This command will install the tar package, which includes the tar command-line utility for creating and extracting archive files. Alternatively, you can use the … Read more
Here are the steps to install PHP 7.x on CentOS 8 for Nginx: Add the remi repository to your system: sudo dnf -y install https://rpms.remirepo.net/enterprise/remi-release-8.rpm Enable the remi-php73 repository: sudo dnf module enable remi-php73 Use dnf to install PHP and the PHP-FPM package: sudo dnf install php php-fpm Start and enable the PHP-FPM service: sudo … Read more
There are a few ways to check the physical health of a USB stick (also known as a flash drive) on a Linux system. One way is to use the smartctl command, which is a command-line utility for monitoring the SMART attributes of a storage device. To use this command, you will need to first … Read more