linux command line

Linux is incredibly robust in its ability to manage multiple users, making it a powerful operating system for servers and systems where you may have multiple people working on the same machine. In non-GUI (Graphical User Interface) distributions, user management is handled entirely through the terminal. This might sound daunting if you're not familiar with command-line interfaces, but it’s actually quite straightforward once you get the hang of it. Managing users in a command-line environment allows for enhanced control and automation opportunities. It's also a fundamental skill for system administrators, as it directly impacts system security and resource management.

Environment variables in Bash are variables that define the environment in which processes run. They store system-wide values like system paths, configuration settings, and user-specific data, and can be accessed or modified within a Bash session. Environment variables are essential for: Configuring system settings. Customizing the behavior of scripts and programs. Storing configuration values for users and applications. Here’s an overview of how to work with environment variables in Bash. 1. Viewing Environment Variables To see all the current environment variables, use the env or printenv command: env or printenv This will print a list of all environment variables and their values.