Unix & Linux File System in Operating System

This is an PPT of Operating System. It include the following topic"Unix & Linux File System in Operating System ".

1. “Unix and Linux File system” Presented By: Shraddha Malviya Roll no. : MCA/25018/18

2. What is Unix? Unix is an multi-user operating system which was first developed in the 1960s , and has been under constant development ever since.

3. Unix file system is logical method of organizing and storing large amount of information in way that makes it easy to manage. A file is a smallest unit in which the information is stored. All data in unix organized into files . All files are organized into directories. Unix file system

4. Directory tree

5. Types of unix file system Ordinary files Directories Special files Pipes Sockets Symbolic links

6. Ordinary file:- Used to store your information, such as some text you have have written or an image you have drawn .This is the type of file that you usually work with it. Special files :- Used to represent a real physical device such as a printer ,tape device or terminal , used for Input/output(I/O) operation. Directories:- Directories store both special an ordinary files. For users familiar with Windows or OS,UNIX directories are equivalent to folders.

7. Pipes :- UNIX allows you to link commands together using a pipe . The pipe acts a temporary file which only exists to hold data from one command until it is read by another .A Unix pipe provides a one-way flow of data. Socket :- A Unix socket (or Inter-process communication socket) is a special file which allows for advanced inter-process communication. Symbolic link :-Symbolic link is used for referencing some other file of the file system . Symbolic link is also known as Soft link.

8. What is LINUX? Linux is an operating system ,we all are familiar with other operating system like Microsoft window , Apple Mac OS , Google android etc. just like them linux is also an operating system

9. User types in LINUX Super-user Normal –user System-user

10. LINUX file system Linux files are stored in a single rooted , hierarchical file system. L inux places all the partitions under the root directory by ‘mounting’ them under specific directories. Linux is case sensitive.

11. Types LINUX file system EXT3 EXT4 VFAT Swap

12. Ext3and Ext4 are stands for extended file system , which are used to create and access logical volume. VFAT stands for virtual file allocation system ,which is used in external medias like pendrive and all. Swap is used to create a swap area in the hard disk.

13. Thank you