There are many ground rules to be followed in jail to make the stay less troublesome. And the most important one is to stay sober and mind your own business. Some other rules include:
Not picking up any fight and deliberately avoiding situations that might put you into one.
Follow all the basic rules of discipline and manners.
Being respectful and nice to all other inmates in all kinds of situations.
Refrain from passing personal judgments based on other inmates’ crimes, personalities, sexuality, et al.