How to Open a Port in UFW
If you’re running a server with Ubuntu or Debian, UFW (Uncomplicated Firewall) provides a simple yet powerful way to manage firewall rules. Opening a specific port in UFW allows external traffic to reach your server for a particular service such as SSH,
How to Install EPEL and RPM Fusion on AlmaLinux
Installing software beyond the official AlmaLinux repositories often requires third-party sources. Two of the most widely used repositories that provide additional tools, utilities, and multimedia support (such as codecs) for Enterprise Linux systems are:
How to check the size of a directory in Linux
Efficient storage management is critical in Linux, whether you’re running a personal server or managing enterprise infrastructure. Monitoring directory size and disk usage helps prevent performance bottlenecks, optimise resource allocation, and detect
How to forward ports with iptables
Port forwarding is essential when you need to expose internal network services like web servers or SSH from behind a NAT or firewall to the public internet. Using iptables, a built-in Linux firewall tool, you can securely route incoming traffic to specific
How to check ubuntu version
Knowing which version of Ubuntu you’re using is essential for system maintenance, software compatibility, and troubleshooting. Whether you’re a beginner or an experienced Linux user, Ubuntu provides both graphical and command-line methods that
What Is the .bashrc File in Linux?
The .bashrc file is a shell script that runs every time a new Bash session is initiated. It is used to configure the Bash environment by defining aliases, functions, environment variables, and executing commands. This file is located in the user’s home
How to use the rysnc command
Efficient file management in Linux often requires more than simple copying, that’s where rsync excels. Unlike the basic cp command, rsync is designed for synchronisation and the intelligent transfer of changed parts of files. It’s perfect for tasks like
How to use cp command in Linux
Copying files and directories is a core task in Linux administration, and the cp command provides a fast, reliable way to do it. Whether backing up important documents or duplicating system files, understanding the cp command and it’s different options
How to change the SSH port on VPS hosting
Unfortunately, securing your VPS against multiple attack vectors is essential. Limiting the overall attack surface and securing ports including the ssh port is just one way to achieve this. Changing the default SSH port from 22 to a different port enhances
How to switch users in Linux
When you switch users in Linux you can seamlessly transitions between accounts without logging out, this is useful for administrative tasks or when you need to access files with different owners. When switching users, always ensure the target user has the