Installing a LAMP (Linux, Apache, MySQL, PHP) stack on RHEL 8 can be done by following these steps: Install Apache web server: sudo dnf install httpd Start the Apache service and enable it to start automatically at boot time: sudo systemctl start httpd sudo systemctl enable httpd Install MySQL server and client: sudo dnf install … Read more

Installing the Nvidia driver on CentOS 7 Linux can be done by following these steps: Ensure that the kernel-devel and gcc packages are installed: sudo yum install kernel-devel gcc Blacklist the nouveau driver by creating a file called /etc/modprobe.d/blacklist.conf with the following content: blacklist nouveau options nouveau modeset=0 reboot the system to load the new … Read more

In Linux, files and directories can be hidden by adding a dot (.) at the beginning of the name. When a dot is added to the beginning of a file or directory name, it is treated as a hidden file or directory and is not visible in the default directory listing. To hide a file … Read more

There are several ways to check running processes in Ubuntu Linux using the command line. Here are a few common methods: ps command: The ps command is used to display information about the current running processes. You can use the ps aux command to display all processes running on the system, along with their user, … Read more

There are several ways to view the Linux kernel parameters for the currently booted system: The sysctl command can be used to view and modify kernel parameters at runtime. To view all kernel parameters, use the -a option. sysctl -a The /proc/sys/ directory contains files representing kernel parameters. You can view the contents of these … Read more

In Bash, you can use the -z operator to check if a variable has a NULL value or not. The -z operator returns true if the length of the string stored in the variable is zero. Here is an example: # Declare a variable myvar=”” # Check if the variable has a NULL value if … Read more

LXD is a container hypervisor that uses the Linux Containers (LXC) technology. It allows you to create and manage containers, similar to virtual machines, but with a smaller footprint and faster performance. To create a snapshot of a container with the lxc command for LXD, you can use the following steps: First, open a terminal … Read more

There are several ways to determine if a Linux system is 32-bit or 64-bit. One way is to use the uname command with the -m option, which will print the machine hardware name of the system. If the output is “i686” or “i386”, the system is 32-bit. If the output is “x86_64”, the system is … Read more

To change the root password on macOS using the terminal, you can use the dscl command. Here are the steps: Open the Terminal application on your macOS system. Type the following command and press Enter: sudo dscl . -passwd /Users/root You will be prompted to enter the new password for the root user. Enter the … Read more

Installing a networked HP printer and scanner on Fedora Linux can be done using the hplip package, which is a collection of drivers and utilities for HP printers and scanners. Open a terminal and update the package list by running the command: sudo dnf update Install the hplip package by running the command: sudo dnf … Read more