设置Set

SET [-v]
SET property_key[=property_value]

设置属性,返回现有属性的值,或列出所有现有属性。Set a property, return the value of an existing property, or list all existing properties. 如果为现有属性键提供了值,则将重写旧值。If a value is provided for an existing property key, the old value will be overridden.

-v

输出现有属性的含义。Output the meaning of the existing properties.

property_key

设置或返回单个属性的值。Set or return the value of an individual property.