We greet him with a friendly Hello or How do you do. A man may have good table manners, but a rude way of speaking to a waiter will identify him with poor etiquette. Rudeness to those who serve us marks us as an impolite person. In the Middle Ages, when two men met, they extended their right hands and shook hands to show that they did not intend to use their swords. It was a display of friendship, and the custom remains a gesture of courtesy through today.
People always shake hands with a guest of honor.
Hosts and hostess s shake hands with friends. When women wore long, flowing gowns, it was difficult for them to exit a carriage, so the gentlemen helped them. Today it is polite for a man to stand ready to give his hand to a woman getting out of a car, opening doors, climbing stairs, getting seated at establishments, offering his seat so that she may not have to stand, offering her the first plate at a buffet, and rising politely when she rises from a seat, walking at the ladies left side or nearest the curb. Much of etiquette is based on using good taste. These things are offensive to others and show poor etiquette.