What Nmap flag is used for OS detection?

Related questions

1. What does a port scanner do?
2. What does Nmap tell?
3. Does Nmap work Windows 10?
4. Is port scanning legal in India?
5. What is the difference between Nmap and Zenmap?
6. What is an ACK scan?
7. How does Nmap detect operating system?
8. How does nmap do OS fingerprinting?
9. What is the goal of port scanning?
10. How Nmap is useful for network administrator?

Tags

1. #examines
2. #remote
3. #stack
4. #responses
5. #detection
6. #every
7. #known
8. #packets
9. #practically
10. #using
11. #fingerprinting
12. #features
13. #series
14. #sends