How To Use Linux Screen, With Commands


Screen is a powerful tool for working in the command line. It lets you create, monitor, and switch between several different windows. With Screen, you can multitask much like a graphical interface. It can also run in the background, waiting for you…

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How to Generate & Set Up SSH Keys on CentOS 7


Learn how to set up SSH key authentication on CentOS to safely communicate with remote servers. Create the key pair, copy the public key, connect to the remote server, and disable password authentication.

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How to Enable/Disable UFW Firewall on Ubuntu 18.04


Ubuntu comes pre-installed with a firewall configuration tool, UFW (Uncomplicated Firewall). This tutorial shows you how to disable and enable an Ubuntu UFW firewall using the command line.

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How to Disable or Turn Off Firewalld on CentOS 7


Firewalld is a dynamically managed firewall solution that supports network zoning. As of CentOS 7, firewalld (Dynamic Firewall Manager) is the default firewall tool on CentOS servers. Admins might need to disable firewalld for testing or switching…

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How to List, Display, & View all Current Cron Jobs in Linux


Cron is used to schedule scripts and commands on Linux systems. Find out where these jobs are stored and list cron jobs running on your computer. Also, use these commands to sort and display tasks scheduled through the cron tool.

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How to Get the Current Date and Time in Python


The article shows you how to create a basic Python script that displays the current date and time. Find out how to use the strftime() method and the datetime module to format the information you need.

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How to Remove Files and Directories Using The Linux Command Line


This article lists the most commonly used commands and tools to remove unwanted files and directories from your system.

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How to Fix ‘add-apt-repository command not found’ on Ubuntu & Debian


This guide shows you how to fix the 'add-apt-repository command not found' error in Ubuntu. This specific Ubuntu error appears when trying to add a new software repository and indicates that the command is not installed on your system.

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PHP Error Reporting: How to Enable & Display All Errors / Warnings


If a script is not written correctly, or if something unusual happens, PHP can generate an error message. The error message provides valuable insight and can point you in the right direction while troubleshooting. Follow the instructions in this…

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How to Install Sophos Intercept X Advanced for Server


If you are using the Sophos Central Admin platform to manage and secure your devices, you will want to activate Server Protection. Deploy Sophos agents on Linux and Windows servers, with the help of this installation guide.

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