If you don't know what thing do any kind of tools, you can use -h, or --help, or man this commands to access help if needed.
Since we’ll be working with various Linux systems, it's important to understand their structure, including system details, processes, network configurations, users/user settings, and directories, along with their related parameters. Below is a list of essential tools to help gather this information. Most of these tools come pre-installed. However, this knowledge is not only crucial for routine Linux tasks, but also plays a key role when assessing security configurations, identifying vulnerabilities, or preventing potential security risks in Linux operating systems.
Command -- Description
whoami Dispalys current username.
id Returns users identify.
hostname Sets or prints the name of current host system
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