• User Enum
• Hostname
• OS & Architecture
• Processes & services
• Firewall
• Network Enum
• Scheduled tasks
• Installed packages & patch level
• Readable/Writable files & dir
• Unmounted disk
• Device Drivers and Kernel Modules
• Binaries That AutoElevate OR SUID
• cat certain file in in each directory
• Automation Tool

For more commands check Important links