There are several ways to view Linux kernel parameters for the currently booted system. sysctl command: The sysctl command can be used to view and modify kernel parameters. To view all kernel parameters, you can use the following command: sysctl -a proc filesystem: The proc filesystem contains a wealth of information about the system and … Read more
To change the root password on macOS using the terminal, you can use the dscl command. The dscl command is used to manage the Directory Service on macOS. Here are the steps to change the root password: Open the Terminal application. Type the following command and press Enter: sudo dscl . -passwd /Users/root You will … Read more
Upgrading Fedora 29 to Fedora 30 involves several steps and it’s recommended to have a backup of your important files before starting the upgrade process. Verify your current version: Before upgrading, you should check the version of Fedora that you are currently running by running the command cat /etc/fedora-release. Update your current version: Before upgrading, … Read more
There are a few ways to determine if your Linux system is running a 32-bit or 64-bit architecture: One way is to use the uname command. This command will display information about the system, including the architecture. You can use the -m option to display the machine hardware name. uname -m If the output of … Read more
oathtool is a command-line utility that can be used to generate one-time passwords (OTPs) for two-step verification (2FA) on Linux. It can be used in combination with other tools and services to implement 2FA on your system. Here’s an example of how you can use oathtool to generate an OTP: First, you need to install … Read more
You can check running processes on Ubuntu using the command-line tool ps. The basic syntax for the ps command is: ps [options] Here are some common options for ps: -A or -e : shows all processes running on the system -aux : shows all processes running on the system with detailed information (user, pid, %cpu, … Read more
There are several ways to check if a port is in use on Linux. netstat command: The netstat command can be used to check the status of network connections and open ports. To check if a specific port is in use, you can use the following command: netstat -tuln | grep :<port_number> For example, to … Read more
The specific command to disable a firewall on Linux depends on the firewall software that is currently in use. Some common firewall software on Linux include: iptables: sudo iptables -F sudo iptables -X sudo iptables -t nat -F sudo iptables -t nat -X sudo iptables -t mangle -F sudo iptables -t mangle -X sudo iptables … Read more
To change the hostname (computer name) on Arch Linux, you can use the hostnamectl command or edit the /etc/hostname file directly. Using the hostnamectl command: sudo hostnamectl set-hostname new_hostname Editing the /etc/hostname file: sudo nano /etc/hostname change the hostname to your desired hostname save the file and exit update the hostname in /etc/hosts file sudo … Read more
There are several ways to check if a port is in use on Linux. netstat command: The netstat command can be used to check the status of network connections and open ports. To check if a specific port is in use, you can use the following command: netstat -tuln | grep :<port_number> For example, to … Read more