What is the difference between Unix and DOS?

Answer

Unix :

A Operating System developed in olden days in which kernel interacts directly with the hardware.kernal is consider to be heart of this os.

In this Operating system everything is considered as a file,provides greater security.

Ex: posix

Linux :

Linux is an Operating system which use unix as its base and gives further more facilities and applications.

Merely speeking GUI is made in linux having unix as its core.

Ex: Redhat, Fedora, Susee, Mandrake . . .

• Solaris OS also using the same unix kernal all the unix commands will work on solaris and have 500 more solaris specific commands.

Differnent organizations used the UNIX kernal and added their own essence to form their own version of linux.

• ** Both UNIX and LINUX are Open source

Windows :

OS developed by microsoft. --> Process based --> Given important to registry (This spoils the windows) --> User friendly Ex : windows 98,windows xp

Answer

Difference between UNIX and Windows: 1. Security: UNIX is more secure than Windows. There are 2 levels at which security is given in UNIX, a. Login level: Each user is given a separate login id. b. File level: Only authorised user can execute certain file. Threfore its very difficult to write Virus in UNIX, where as in Windows u know it!

2. Everything in UNIX is treated as file (even the h/w devices like printers, scanners etc!) but it is not the case in Windows.

Answer

I think we need to be more sure about the statement " Merely speeking GUI is made in linux having unix as its core" because what I know unix has also got tis GUI.

Answer

Unix:

Its an operating system.everything should be entered as commands like DOS single user operating system.

Linux:

Using core of unix and added some utilities to make it GUI based as well as command based.everything will be in files. Each user will be given a specific id and only authorized person can access that files.so no virus can write into this.

windows:

user friendly operating system.less security,anyone can enter and view the files.

Ch.Ramprasad Linux System Administrator

Answer

UNIX vs. DOS command syntax

Back in the days before Microsoft Windows dominated the PC market, operating system were controlled by commands. Prior to MS-Windows, PC users were required to learn these commands in order to perform routine tasks. During the 1980s, Microsoft DOS dominated the PC market while the early UNIX command systems were used on larger multi-processing servers.

The main difference between UNIX and DOS is that DOS was originally designed for single-user systems, while UNIX was designed for systems with many users.

While PC�s have evolved into GUI interfaces such as Windows, UNIX systems have never evolved into GUI environments. Hence, The Oracle professional must master a bewildering number of cryptic UNIX commands in order to manage their Oracle databases, both on Windows NT and UNIX.

One of the most confounding issues for the UNIX neophyte is being confronted with a complex UNIX command. The cryptic nature of UNIX is such that even the most seasoned UNIX professional may have trouble deciphering the purpose of the command.

Because UNIX and MS-DOS were developed at the same time they share some common syntax, and the UNIX neophyte will be happy to find many common commands and concepts. The list below shows some of the commonality between UNIX and MS-DOS commands:

*

Changing directories � both DOS and UNIX utilize the cd commands for this purpose, but UNIX has the �cd �� command that allows you to flip-flop between your last two directories. *

Display file contents � UNIX has the �cat� command� and DOS uses the �type� command. *

Setting file permissions � DOS uses the �attrib� command while UNIX uses the �chmod� command to change file permissions. *

Copying files � DOS uses the �copy� command, while UNIX uses the �cp� command. *

Comparing two files � UNIX uses the �diff� command and DOS has the �fc� command. *

Printing files � UNIX uses the �lp� command while DOS uses the �print� command. *

Moving files � DOS uses the �rename� command and UNIX uses the �mv� command. *

Make a directory � UNIX uses the �mkdir� command while DOS has the �md� command. *

Display directory contents � UNIX uses the �ls� command and DOS has the �dir� command. *

Delete files � DOS uses the �del� command while UNIX has the �rm� command. *

Display the OS version � DOS uses the �ver� command while UNIX has the �uname �a� command.

Answer

The list above is mostly crap. UNIX can have X11 and a graphical user interface like Linux. Linux is like "UNIX, rewritten open source". OpenSource and UNIX have many many differences. Oh boy..the list above would be easier to re-write than fix.

And about the security: Linux or UNIX or any flavour of them is typically more secure than Windows, but only if you know how to configure it.

And ONCE AGAIN: UNIX DOES HAVE GRAPHICAL USER INTERFACE, you dummies just never have tried to install it. My prove? I just used a UNIX server through a graphical nice user-interface, even with a window manager and lots of stuff Windows doesn't have. And it was like two weeks ago..oh boys, and on top of it all, it wasn't even "new" thing, that's for sure.

Get to know things, geeks, before you write about them.

Regards,

A long-term UNIX, Linux, Windows, DOS, Mac OS user.

Answer

All modern operating systems, whether directly like Linux or indirectly like DOS, have borrowed one concept or another from Unix. This isn't to say that Microsoft copied some Unix commands to their MS-DOS operating system and renamed it MS-DOS. OS developers use what Unix has used for 30-40 years.

I've used Windows, Mac, MS-DOS and Unix/Linux.

Mac, Unix and Linux are the only OSes I have adopted

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