What are the charateristics of UNIX operating system?

Answer 1

The UNIX Operating System is available on machines with a wide range of computing power, from microcomputers to mainframes, and on different manufacture's machines. No other operating system can make this claim. We see the reasons of popularity and success of UNIX.

The reasons are

Portability:

The system is written in high-level language making it easier to read, understand, change and, therefore move to other machines. The code can be changed and complied on a new machine. Customers can then choose from a wide variety of hardware vendors without being locked in with a particular vendor.

Machine-independence:

The System hides the machine architecture from the user, making it easier to write applications that can run on micros, mins and mainframes.

Multi-User Operations:

UNIX is a multi-user system designed to support a group of users simultaneously. The system allows for the sharing of processing power and peripheral resources, white at the same time providing excellent security features.

Hierarchical File System:

UNIX uses a hierarchile file structure to store information. This structure has the maximum flexibility in grouping information in a way that reflects its natural state. It allows for easy maintenance and efficient implementation.

UNIX shell:

UNIX has a simple user interface called the shell that has the power to provide the services that the user wants. It protects the user from having to know the intricate hardware details.

Pipes and Filters:

UNIX has facilities called Pipes and Filters which permit the user to create complex programs from simple programs.

Utilities:

UNIX has over 200 utility programs for various functions. New utilities can be built effortlessly by combining existing utilities.

Software Development Tools:

UNIX offers an excellent variety of tools for software development for all phases, from program editing to maintenance of software,

Answer 2

The UNIX Operating System is available on machines with a wide range of computing power, from microcomputers to mainframes, and on different manufacture's machines. No other operating system can make this claim. We see the reasons of popularity and success of UNIX.

The reasons are

Portability:

The system is written in high-level language making it easier to read, understand, change and, therefore move to other machines. The code can be changed and complied on a new machine. Customers can then choose from a wide variety of hardware vendors without being locked in with a particular vendor.

Machine-independence:

The System hides the machine architecture from the user, making it easier to write applications that can run on micros, mins and mainframes.

Multi-User Operations:

UNIX is a multi-user system designed to support a group of users simultaneously. The system allows for the sharing of processing power and peripheral resources, white at the same time providing excellent security features.

Hierarchical File System:

UNIX uses a hierarchile file structure to store information. This structure has the maximum flexibility in grouping information in a way that reflects its natural state. It allows for easy maintenance and efficient implementation.

UNIX shell:

UNIX has a simple user interface called the shell that has the power to provide the services that the user wants. It protects the user from having to know the intricate hardware details.

Pipes and Filters:

UNIX has facilities called Pipes and Filters which permit the user to create complex programs from simple programs.

Utilities:

UNIX has over 200 utility programs for various functions. New utilities can be built effortlessly by combining existing utilities.

Software Development Tools:

UNIX offers an excellent variety of tools for software development for all phases, from program editing to maintenance of software,

Answer 3

A file system is a logical method for organising and storing large amounts of information in a way which makes it easy manage. The file is the smallest unit in which information is stored. The UNIX file system has several important features.

• Different types of file
• Structure of the file system
• Your home directory
• Your current directory
• Pathnames
• Access permissions

Answer 4

1-It support high level language.

2-Easy to use.

3-Security provider.

4-Simple user interface.

5-Make complex program.

6-Hierarchy file structure (Directories or files).

7-Multi user and multiprocessor system.

8-Hide machine architecture from the user.

Answer 5

flexibe, faster to run programme ,very secure , portability

Answer 6

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