1. Disk Operating System (DOS) :
DOS stands for Disk Operating System. It is a single-user (no security), a single-process system that gives complete control of the computer to the user program. It consumes less memory and power than Unix.
2. UNIX :
UNIX is a powerful, multi-user, and multitasking operating system that was originally developed at AT & T Bell Laboratories. It is a very popular operating system among the scientific, engineering, and academic due to its most appreciating features like flexibility, portability, network capabilities, etc.
Difference between DOS and Linux :
|1.||DOS is single tasking operating system.||UNIX are multitasking operating systems.|
|2.||It is monouser (no concept of more than one user)||UNIX are multiuser (with multiple simultaneous users);|
|3.||It consumes low power.||It consumes high power.|
|4.||It has no native support for IP networks.||It come with built-in support for IP networks.|
|5.||It has 3 proprietary implementations (MS-DOS, IBM DOS and DR-DOS) and one free implementation (FreeDOS).||There are many proprietary and free/open source implementations.|
|6.||It is not case sensitive.||It is case sensitive.|
|7.||It is used in embedded systems.||It is mainly used in servers.|
|8.||It uses backslashes.||It uses forward slashes.|
|9.||It has no virtual memory nor protected memory.||It usually have virtual memory and protected memory.|
|10.||It has batch files.||It has shell files.|