How does rsync command work?

Related questions

1. Does rsync encrypt data?
2. What is rsync option?
3. How does rsync handle symlinks?
4. What is duplicity Ubuntu?
5. Which port does rsync use?
6. How do you copy a symbolic link?
7. What does rsync -- delete do?
8. Does rsync work on Windows?

Tags

1. #structure
2. #remote
3. #either
4. #destination
5. #command
6. #encrypted
7. #quick
8. #transferring
9. #basic
10. #authentication
11. #local
12. #source
13. #works
14. #similar
15. #rsync
16. #servers
17. #networks