Deadlocks-An Unconditional Waiting Situation in Operating System. We must make sure of This concept well before understanding deep in to Operating System. This PPT will understands you to get how the deadlocks Occur and how can we Detect, avoid and Prevent the deadlocks in Operating Systems.
Deadlocks-An Unconditional Waiting Situation in Operating System. We must make sure of This concept well before understanding deep in to Operating System. This PPT will understands you to get how the deadlocks Occur and how can we Detect, avoid and Prevent the deadlocks in Operating Systems.
INTRODUCTION
WHAT IS OSI?
OSI MODEL
TYPES OF LAYERS
PHYSICAL LAYER
DATA LINK LAYER
NETWORK LAYER
TRANSPORT LAYER
SESSION LAYER
PRESENTATION LAYER
APPLICATION LAYER
File system in operating system e learningLavanya Sharma
This Module covers the basic of file system, its types, accessing methods, security and architecture of Unix operating system. This study material is very useful for UG and PG students of Engineering colleges and University where this course is in their Syllabus.
Definition
File Structure
Directory Structure: Single level, Two-level, Tree-structured , Acyclic graph, General graph.
File Type and operations
Major functions of OS in respect of File system
File Access Mechanisms and Space Allocation
Security and Protection
Program and system Threats
LINUX OPERATING SYSTEM: Architecture and basic commands
INTRODUCTION
WHAT IS OSI?
OSI MODEL
TYPES OF LAYERS
PHYSICAL LAYER
DATA LINK LAYER
NETWORK LAYER
TRANSPORT LAYER
SESSION LAYER
PRESENTATION LAYER
APPLICATION LAYER
File system in operating system e learningLavanya Sharma
This Module covers the basic of file system, its types, accessing methods, security and architecture of Unix operating system. This study material is very useful for UG and PG students of Engineering colleges and University where this course is in their Syllabus.
Definition
File Structure
Directory Structure: Single level, Two-level, Tree-structured , Acyclic graph, General graph.
File Type and operations
Major functions of OS in respect of File system
File Access Mechanisms and Space Allocation
Security and Protection
Program and system Threats
LINUX OPERATING SYSTEM: Architecture and basic commands
Useful documents for engineering students of CSE, and specially for students of aryabhatta knowledge university, Bihar (A.K.U. Bihar). It covers following topics, File concept, access methods, directory structure
Communications Mining Series - Zero to Hero - Session 1DianaGray10
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• Communication Mining Overview
• Why is it important?
• How can it help today’s business and the benefits
• Phases in Communication Mining
• Demo on Platform overview
• Q/A
Unlocking Productivity: Leveraging the Potential of Copilot in Microsoft 365, a presentation by Christoforos Vlachos, Senior Solutions Manager – Modern Workplace, Uni Systems
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In this talk, I'll show you step-by-step how to secure your Kubernetes cluster for greater peace of mind and reliability.
GraphSummit Singapore | The Art of the Possible with Graph - Q2 2024Neo4j
Neha Bajwa, Vice President of Product Marketing, Neo4j
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We’ll kick things off by showcasing the most commonly used event-based triggers, introducing you to various automation workflows like manual triggers, schedules, directory watchers, and more. Plus, see how these elements play out in real scenarios.
Whether you’re tweaking your current setup or building from the ground up, this session will arm you with the tools and insights needed to transform your FME usage into a powerhouse of productivity. Join us to discover effective strategies that simplify complex processes, enhancing your productivity and transforming your data management practices with FME. Let’s turn complexity into clarity and make your workspaces work wonders!
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Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
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At WSTS 2024, Alon Stern explored the topic of parametric holdover and explained how recent research findings can be implemented in real-world PNT networks to achieve 100 nanoseconds of accuracy for up to 100 days.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
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The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
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Gopinath Rebala
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Presented by Vladimir Iglovikov:
- https://www.linkedin.com/in/iglovikov/
- https://x.com/viglovikov
- https://www.instagram.com/ternaus/
This presentation delves into the journey of Albumentations.ai, a highly successful open-source library for data augmentation.
Created out of a necessity for superior performance in Kaggle competitions, Albumentations has grown to become a widely used tool among data scientists and machine learning practitioners.
This case study covers various aspects, including:
People: The contributors and community that have supported Albumentations.
Metrics: The success indicators such as downloads, daily active users, GitHub stars, and financial contributions.
Challenges: The hurdles in monetizing open-source projects and measuring user engagement.
Development Practices: Best practices for creating, maintaining, and scaling open-source libraries, including code hygiene, CI/CD, and fast iteration.
Community Building: Strategies for making adoption easy, iterating quickly, and fostering a vibrant, engaged community.
Marketing: Both online and offline marketing tactics, focusing on real, impactful interactions and collaborations.
Mental Health: Maintaining balance and not feeling pressured by user demands.
Key insights include the importance of automation, making the adoption process seamless, and leveraging offline interactions for marketing. The presentation also emphasizes the need for continuous small improvements and building a friendly, inclusive community that contributes to the project's growth.
Vladimir Iglovikov brings his extensive experience as a Kaggle Grandmaster, ex-Staff ML Engineer at Lyft, sharing valuable lessons and practical advice for anyone looking to enhance the adoption of their open-source projects.
Explore more about Albumentations and join the community at:
GitHub: https://github.com/albumentations-team/albumentations
Website: https://albumentations.ai/
LinkedIn: https://www.linkedin.com/company/100504475
Twitter: https://x.com/albumentations
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In this work, we equipped AFL, a popular fuzzer, with DIAR and examined two critical Linux libraries -- Libxml's xmllint, a tool for parsing xml documents, and Binutil's readelf, an essential debugging and security analysis command-line tool used to display detailed information about ELF (Executable and Linkable Format). Our preliminary results show that AFL+DIAR does not only discover new paths more quickly but also achieves higher coverage overall. This work thus showcases how starting with lean and optimized seeds can lead to faster, more comprehensive fuzzing campaigns -- and DIAR helps you find such seeds.
- These are slides of the talk given at IEEE International Conference on Software Testing Verification and Validation Workshop, ICSTW 2022.
In his public lecture, Christian Timmerer provides insights into the fascinating history of video streaming, starting from its humble beginnings before YouTube to the groundbreaking technologies that now dominate platforms like Netflix and ORF ON. Timmerer also presents provocative contributions of his own that have significantly influenced the industry. He concludes by looking at future challenges and invites the audience to join in a discussion.
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In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Free Complete Python - A step towards Data Science
directory structure and file system mounting
1. DIRECTORY STRUCTURE AND FILE
SYSTEM MOUNTING IN OS
M.Raj shree
M.SC(IT)
Nadar saraswathi college of arts&science
2. Directory Structure
Directory structure provides both the above-
discussed features. A directory always has
information about the group of related
files. Whenever a user or a process request for
a file, the file system search for the file’s entry
in the directory and when the match is found, it
obtains the file’s location from there.
A directory is a container that is used to
contain folders and file. It organizes files and
folders into a hierarchical manner.
3. Types of Directory Structures
Single-level directory structure
Single level directory structure has only one
directory which is called the root directory. The
users are not allowed to create subdirectories
under the root directory. All the files created by
the several users are present in the root
directory only.
Single level directory is simplest directory
structure.In it all files are contained in same
directory which make it easy to support and
understand.
4. Advantages
Since it is a single directory, so its
implementation is very easy.
If the files are smaller in size, searching
will become faster.
The operations like file creation, searching,
deletion, updating are very easy in such a
directory structure.
5.
6. Two-level directory structure
In Two-level directory structure, the users
create directory directly inside the root
directory. But once a user creates such
directory, further he cannot create any
subdirectory inside that directory
4 users have created their separate directory
inside the root directory. But further, no
subdirectory is created by the users.
This two-level structure allows each user to
keep their files separately inside their own
directory. This structure allows to use the same
name for the files but under different user
7.
8. Hierarchical Directory Structure
In Hierarchical directory structure, the users
can create directories under the root directory
and can also create sub-directories under this
structure. As the user is free to create many
sub-directories, it can create different sub-
directories for different file types.
Here, the files are accessed by their location
using the path. There are two types of paths to
locate the file in this directory structure
9. Tree Directory Structure
In a tree directory structure, except root
directory, every directory or file has only one
parent directory. So, there is a total
separation between the users which provide
complete naming freedom. Here, if a user
wishes to access another users file, it has to go
through two or more directories.
The tree directory structure provides an
asymmetric way for the user to access the
shared files of a different user. For example, a
user can access a file of its own user directory
with a shorter path than the other user.
10.
11. Acyclic-Graph Directory
Structure
An acyclic graph is a graph with no cycle and
allows to share subdirectories and files. The
same file or subdirectories may be in two
different directories. It is a natural
generalization of the tree-structured directory.
directory structure allows a directory or a file to
have many parent directories. So, a shared file
in a directory can be pointed by the other user
directories who have access to that shared file
using the links.
12. File system mounting
Mounting is a process by which the operating
system makes files and directories on a storage
device (such as hard drive, CD-ROM, or network
share) available for users to access via the
computer's file system.
An opposite process of mounting is
called unmounting, in which the operating system
cuts off all user access to files and directories on
the mount point, writes the remaining queue of
user data to the storage device, refreshes file
system metadata, then relinquishes access to the
device; making the storage device safe for
removal.
13. A mount point is a location in the
partition used as a root filesystem
Many different types of storage exist, including
magnetic, magneto-optical, optical, and
semiconductor (solid-state) drives.
Each different filesystem provides the host
operating system with metadata so that it
knows how to read and write data.
When the medium (or media, when the
filesystem is a volume filesystem as in
RAID arrays) is mounted, these metadata are
read by the operating system so that it can use
14. In order to access a filesystem in Linux you
first need to mount it. Mounting a filesystem
simply means making the particular filesystem
accessible at a certain point in the Linux
directory tree.
When mounting a filesystem it does not matter
if the filesystem is a hard disk partition, CD-
ROM, floppy, or USB storage device
Mounting is the attaching of an additional file
system to the currently accessible file
system of a computer.