File System in Operating System in Hindi | Files & File System | Operating System Tutorials Lectures

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*File Systems- The file system is the part of the operating system which is responsible for file management. It provides a mechanism to store the data and access to the file contents including data and programs. Some Operating systems treat everything as a file for example Ubuntu. The File system takes care of the following issues File Structure We have seen various data structures in which the file can be stored. The task of the file system is to maintain an optimal file structure. Recovering Free space Whenever a file gets deleted from the hard disk, there is a free space created in the disk. There can be many such spaces that need to be recovered in order to reallocate them to other files. disk space assigned to the files The major concern about the file is deciding where to store the files on the hard disk. There are various disks scheduling algorithm which will be covered later in this tutorial. tracking data location A File may or may not be stored within only one block. It can be stored in the non-contiguous blocks on the disk. We need to keep track of all the blocks on which the part of the files reside. What is File System? A file is a collection of correlated information that is recorded on secondary or non-volatile storage like magnetic disks, optical disks, and tapes. It is a method of data collection that is used as a medium for giving input and receiving output from that program. In general, a file is a sequence of bits, bytes, or records whose meaning is defined by the file creator and user. Every File has a logical location where they are located for storage and retrieval. File structure A File Structure needs to be predefined format in such a way that an operating system understands. It has an exclusively defined structure, which is based on its type. Three types of files structure in OS: A text file: It is a series of characters that is organized in lines. An object file: It is a series of bytes that is organized into blocks. A source file: It is a series of functions and processes. File Attributes A file has a name and data. Moreover, it also stores meta information like file creation date and time, current size, last modified date, etc. All this information is called the attributes of a file system. Here, are some important File attributes used in OS: Name: It is the only information stored in a human-readable form. Identifier: Every file is identified by a unique tag number within a file system known as an identifier. Location: Points to file location on the device. Type: This attribute is required for systems that support various types of files. Size. Attribute used to display the current file size. Protection. This attribute assigns and controls the access rights of reading, writing, and executing the file. Time, date and security: It is used for protection, security, and also used for monitoring File Type It refers to the ability of the operating system to differentiate various types of files like text files, binary, and source files. However, Operating systems like MS_DOS and UNIX has the following type of files: Character Special File It is a hardware file that reads or writes data character by character, like mouse, printer, and more. Ordinary files These types of files stores user information. It may be text, executable programs, and databases. It allows the user to perform operations like add, delete, and modify. Directory Files Directory contains files and other related information about those files. Its basically a folder to hold and organize multiple files. Special Files These files are also called device files. It represents physical devices like printers, disks, networks, flash drive, etc. Functions of File Create file, find space on disk, and make an entry in the directory. Write to file, requires positioning within the file Read from file involves positioning within the file Delete directory entry, regain disk space. Reposition: move read/write position. Commonly used terms in File systems Field: This element stores a single value, which can be static or variable length. DATABASE: The collection of related data is called a database. Relationships among elements of data are explicit. FILES: Files is the collection of similar record which is treated as a single entity. RECORD: A Record type is a complex data type that allows the programmer to create a new data type with the desired column structure. Its groups one or more columns to form a new data type. These columns will have their own names and data type.*

[@AB_visuals_1]

Best Lecture ever to learn file system ☑️☑️

[@kannada_ve_USIRU]

Seriously am getting knowledge more then,I was studying.thanks a lot. So called the power of mother language

[@mr.badiger6408]

✍️I've never seen a better video to understand the file system.. Cha gaye Guru 🤝

[@narendrakumarpanwar7639]

Thank you so much sir for such a nice video on this topic👍👍👍👍 ...but need some more deep dive on it. If possible make a video on "what actually happens when we format a RAW disk with a file system and what are feature of different files sytems like ext2 , ext3 xfs and afs etc".

[@khalilrehman9048]

Wonderful presentation I ever seen❤

[@vandanayadav7068]

thankyou sir, nice explanation very useful for my presentation.

[@sukumardas5357]

I found best channel for knowledge

[@MaharajVinayakGlobalUniversity]

Shandhar Sir

[@aktripathi48]

Very nice

[@shilpa9003]

Excellent sir

[@half_enginner]

Best lecture ever

[@bhawananagda1569]

Nice explanation.. thanku sir..🙂

[@easylearningforyou8174]

Waaaa waaaaa welcome back sir

[@vinod420786]

thank you sir

[@ITEXAMGURUJI]

Most welcome

[@dheerajsaini04]

Nice

[@mirmudasir1445]

thanks so much sir

[@ITEXAMGURUJI]

Most welcome

[@kuldeepjain2509]

Mind blowing sir ji.......

[@ITEXAMGURUJI]

Thanks a lot

[@krishanlal7730]

first time my fundamental regarding HDD also cleared . Now about File system I can easily write in my examination . ****** Can you clear about File system in UNIX.? --- With positive hope.

[@muhammadusman-rg8yu]

bht info video thi

[@ManojSingh-ze5hy]

Excellent video

[@ITEXAMGURUJI]

Thank you very much!

[@ManojSingh-ze5hy]

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[@Ku333Ku]

Nice lecture sir ji

[@ITEXAMGURUJI]

welcome Kavita ji

[@Ku333Ku]

@@ITEXAMGURUJI sir ji nahi please 🙏

[@RavinderKumar15dec87]

Thanks sir

[@khushicharag1687]

Nyc lecture 👌👌👌

[@sankarlalbunkar6155]

Sir file system topic raj.patwar m h plz ise cmplte kra do

[@shivuyaduvansi8883]

First like nd first comment

[@ITEXAMGURUJI]

You Won d Kill Match :)

[@sankarlalbunkar6155]

Second like nd comment lov u sir

[@ITEXAMGURUJI]

Thanks :)

[@bhawananagda1569]

Sir Rajasthan computer teacher ki vacancy kbtk aa skti he..

[@mdsudarshan]

Guruji kya mujhe AEN IT 2019 ka paper mil sakta h kya?

[@sankarlalbunkar6155]

Sir plzz ye video offline bhi chodna

[@sanketsuryawanshi]

Best sir ji one of the best 👍👍 i have lot of questions to ask but where i can ask ? Sir you are not reply on Instagram sir please any contact no ?

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I I stucked in corona lockdown

[@sanketsuryawanshi]

@@ITEXAMGURUJI means sir i am not getting?