These are the different types of OS. Multi User – Allows two or more users to run programs at the same time.
Month: August 2015
What is an Operating System (OS)?
An operating system is the most important program that runs on a computer. An operating system (OS) is software that manages computer hardware and
What is the use of Destructive Method in ruby?
In ruby programming Destructive methods are used to change the object value permanently by itself using bang (!) operator. The exclamation
How to get ruby class of an object?
In Ruby programming method ‘class’ is used to get ruby class of an object. Method ‘class’ is used to tells
What is difference between true, nil and false keywords in ruby?
true, nil and false are the keywords in Ruby. In which nil is a special keyword reserved to indicate the absence of value