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
1. Super-user
2. Normal –user
3. System-user

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

12. Types LINUX file system
EXT3
EXT4
VFAT
Swap

13. 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.