Operating System Tutorial

Operating System Tutorial Types of Operating System Evolution of Operating System Functions of Operating System Operating System Properties Operating System Services Components of Operating System Needs of the Operating System

Operating Systems

Linux Operating System Unix Operating System Ubuntu Operating System Chrome Operating Systems Fedora Operating System MAC Operating System MS Windows Operating System Solaris Operating System Cooperative Operating System CorelDRAW Operating System CentOS FreeBSD Operating Systems Batch Operating System MS-DOS Operating System Commercial Mobile Operating Systems


Difference Between Multi-programming and Multitasking Difference between C-LOOK and C-SCAN Difference between Rotational Latency and Disk Assess Time Trap vs Interrupt Difference between C-SCAN and SSTF Difference between SCAN and FCFS Difference between Seek Time and Disk Access Time Difference between SSTF and LOOK Difference between Process and Program in the Operating System Difference between Protection and Security in Operating System

How To

How to implement Monitors using Semaphores How to Install a Different Operating System on a PC


What is Kernel and Types of Kernel What is DOS Operating System What is Thread and Types of Thread What is Process Scheduler and Process Queue What is Context Switching What is CPU Scheduling What is Producer-Consumer Problem What is Semaphore in Operating System Monitors in Operating System What is Deadlock What is Paging and Segmentation What is Demand Paging What is Virtual Memory What is a Long term Scheduler What is Page Replacement in Operating System What is BSR Mode What is Convoy Effect What is Job Sequencing in Operating System Why is it critical for the Scheduler to distinguish between I/O-bound and CPU-bound programs Why is there a Need for an Operating System


Process Management Process State Scheduling Algorithm FCFS (First-come-First-Serve) Scheduling SJF (Shortest Job First) Scheduling Round-Robin CPU Scheduling Priority Based Scheduling HRRN (Highest Response Ratio Next) Scheduling Process Synchronization Lock Variable Mechanism TSL Mechanism Turn Variable Mechanism Interested Variable Mechanism Deadlock Avoidance Strategies for Handling Deadlock Deadlock Prevention Deadlock Detection and Recovery Resource Allocation Graph Banker’s Algorithm in Operating System Fixed Partitioning and Dynamic Partitioning Partitioning Algorithms Disk Scheduling Algorithms FCFS and SSTF Disk Scheduling Algorithm SCAN and C-SCAN Disk Scheduling Algorithm Look and C-Look Disk Scheduling Algorithm File in Operating System File Access Methods in Operating System File Allocation Method Directory Structure in Operating System N-Step-SCAN Disk Scheduling Feedback Queue in Operating System Contiguous Memory Allocation in Operating System Real-time Operating System Starvation in Operating System Thrashing in Operating System 5 Goals of Operating System Advantages of Operating System Advantages of UNIX Operating System Bit Vector in Operating System Booting Process in Operating System Can a Computer Run Without the Operating System Dining Philosophers Problem in Operating System Free Space Management in Operating System Inter Process Communication in Operating System Swapping in Operating System Memory Management in Operating System Multiprogramming Operating System Multitasking Operating Systems Multi-user Operating Systems Non-Contiguous Memory Allocation in Operating System Page Table in Operating System Process Scheduling in Operating System Segmentation in Operating System Simple Structure in Operating System Single-User Operating System Two Phase Locking Protocol Advantages and Disadvantages of Operating System Arithmetic operations in binary number system Assemblers in the operating system Bakery Algorithm in Operating System Benefits of Ubuntu Operating System CPU Scheduling Criteria in Operating System Critical Section in Operating System Device Management in Operating System Linux Scheduler in Operating System Long Term Scheduler in Operating System Mutex in Operating System Operating System Failure Peterson's Solution in Operating System Privileged and Non-Privileged Instructions in Operating System Swapping in Operating System Types of Operating System Zombie and Orphan Process in Operating System 62-bit operating system Advantages and Disadvantages of Batch Operating System Boot Block and Bad Block in Operating System Contiguous and Non - Contiguous Memory Allocation in Operating System Control and Distribution Systems in Operations Management Control Program in Operating System Convergent Technologies in Operating System Convoy Effect in Operating System Copy Operating Systems to SSD Core Components of Operating System Core of UNIX Operating System Correct Value to return to the Operating System Corrupted Operating System Cos is Smart Card Operating System Cosmos Operating Systems Examples Generation of Operating System Hardware Solution in Operating System Process Control Block in Operating System Function of Kernel in Operating System Operating System Layers History of Debian Operating Systems Branches and Architecture of Debian Operating Systems Features and Packages of Debian Operating Systems Installation of Operating System on a New PC Organizational Structure and Development in Debian Operating Systems User Interface in Operating System Types Of Memory in OS Operating System in Nokia Multilevel Paging in OS Memory Mapping Techniques in OS Memory Layout of a Process in Operating System Hardware Protection in Operating System Functions of File Management in Operating System Core of Linux Operating System Cache Replacement Policy in Operating System Cache Line and Cache Size in Operating System What is Memory Mapping? Difference Between Network Operating System And Distributed Operating System What is the difference between a Hard link and a Soft Link? Principles of Preemptive Scheduling Process Scheduling Algorithms What is NOS? What is the Interrupt I/O Process? What is Time Sharing OS What is process termination? What is Time-Sharing Operating System What is Batch File File system manipulation What is Message-passing Technique in OS Logical Clock in Distributed System

Functions of File Management in Operating System

File management is one of the important features of any operating system, among other features like process management, memory management, disk management and file management. File management has all the tools and processes required to manage files and directories on a computer. File management has the required tools to create, manage, modify, access, and organize files stored on the computer’s various storage devices.

The key functions of the file management in operating systems are as follows:

a) File Creation

The first function for file management to manage files stored on a computer’s storage device is File creation. In File creation, users can create new files of any type and format using various text editors, image editors, and other software applications. The OS (operating system) provides the necessary resources and APIs for creating files.

Let us explain the process of file creation with the help of an example in the Python programming language:-

In order to create files in Python, we have to use the built in function open () function. Arguments taken by the open function are: - the file path and the mode in which you want the file to be opened (read mode, write mode, append mode, etc.). Here is the Python code snippet for creating a file:-


file = open("example.txt", "w") # opening the file in write mode and name of # the file example, which is a text file
file.write("My name is Alex .") # writing the text in the file opened
file.close() # closing the file again after writing in it.

In this above Python code snippet, we have created a file named ‘example.txt’ and opened this file in the write mode using the ‘w’ argument to the function open. We then wrote the string ‘My name is Alex ’ in the file opened using the write () function. And at last, closed/terminated the open file “example.txt” using the close () method/function in file management.

b) File Editing

In file editing, users can modify and update the files using various tools such as text editors and graphic editors. Operating System (OS) provides tools to manage file permissions and locking to ensure that multiple users can edit the file at the same time.

A Python code snippet for file editing is given below:


file = open("example.txt", "r+") # opening files for editing purpose
text = file.read() # reading the file
file.write("New text.") # writing new text in the file using write function
file.close() # closing the file after operations

c) File Organization

In file management, File organization is used to organize the files and directories. With this function, you can create, move, copy, rename, and delete files stored in the memory.

A Python code snippet for file organization is given below:


import os
# Creating a new directory
# Renaming a file
os.rename("example.txt", "new_name.txt")
# Moving a file to a different directory
os.rename("example.txt", "new_directory/new_file.txt")
# Deleting a file
# Delete a directory and all its contents

d) File Search and Retrieval

This function of file management allows the users to search and retrieve files based on various criteria such as file name, file type, date modified, last edited, etc.

A Python code snippet for file search and retrieval is given below:


import os #importing the os and glob libraries
import glob
# Search for all files in the current directory with the .txt extension
files = glob.glob("*.txt")
# Print the path of each file
for file in files:

e) File Backup and Recovery

This tool of file management in operating systems allows the users to backup files to protect against data loss due to hardware failure and other issues. This function of file management may include restoring files from the backups.

A Python code snippet for file search and retrieval is given below:


import shutil
# Creating a backup of a file
shutil.copy("example.txt", "backup.txt")
# Restoring the file from the backup
shutil.copy("backup.txt", "example.txt")

In the example given here, the shutil.copy () function is used to create a backup of the example.txt file with the name backup.txt. We can use the same shutil.copy () function again to restore the file from the backup by passing backup.txt as the source file and example.txt as the destination file.

Hence, these are all important functions of file management in operating systems.