Linux Commands

For Updating Linux and Linux Modules

• sudo apt update
• sudo apt upgrade
• Restart

For creating users and changing passwords

• addusr (username)
• passwd (username)

NMAP Commands

• sudo nmap -sT (ip) - for unprivileged users and IPv6 networks
• sudo nmap -sS (ip) - the default NMAP option
• sudo nmap -sV (ip) - for version and OS detection
• sudo nmap -A (ip) - for script scanning, version, and OS detection
• sudo nmap -p (port) (ip) - for scanning a specific port

File and Directory Commands

• cat - to read a file
• cd - to change directories
• tree - to view position in the directory tree
• ls - to see files in directory
• mkdir - to make a new directory
• cp (file) (destination) - to copy a file
• grep - to search file output