System Information. Windows includes a tool called Microsoft System Information (Msinfo32.exe). This tool gathers information about your computer and displays a comprehensive view of your hardware, system components, and software environment, which you can use to diagnose computer issues.
Hardware Resources
Components
Software Environment
msinfo32
Another method to view environment variables is Control Panel > System and Security > System > Advanced system settings > Environment Variables OR Settings > System > About > system info > Advanced system settings > Environment Variables.
Resource Monitor
CPU
Disk
Network
Memory
Registry Editor
Essential Commands
RDP
RDP with share folder
Check open Ports
You can do it by running ss -tunlp (or netstat on older systems)
Recursively search for files
dir → list files
C:\Windows\System32\*.txt → match all .txt files in System32
/s → search recursively through all subdirectories
/b → bare format (full paths only, no headers or extra info)