This document discusses package management in Linux. It describes how package management allows installing, upgrading, and removing software packages from repositories. There are two main package formats: RPM packages used in systems like CentOS and Fedora, and DEB packages in Ubuntu and Debian. RPM-based systems can use either the lower-level RPM tool or higher-level YUM tool to manage packages and dependencies.
Users and groups are used on GNU/Linux for access control that is, to control access to the system's files, directories, and peripherals. Linux offers relatively simple/coarse access control mechanisms by default.
This lecture discusses the different techniques used to install, uninstall and upgrade software packages in Linux and the associated tools
Video for this lecture on youtube:
http://www.youtube.com/watch?v=pFqdupd9wKk
Check the other Lectures and courses in
http://Linux4EnbeddedSystems.com
or Follow our Facebook Group at
- Facebook: @LinuxforEmbeddedSystems
Lecturer Profile:
Ahmed ElArabawy
- https://www.linkedin.com/in/ahmedelarabawy
LInux: Basics & File System:The Unix operating system was conceived and implemented in 1969 at AT&T's Bell Laboratories in the United States by Ken Thompson, Dennis Ritchie, Douglas McIlroy, and Joe Ossanna. First released in 1971, Unix was written entirely in assembly language, as was common practice at the time. Later, in a key pioneering approach in 1973, it was rewritten in the C programming language by Dennis Ritchie (with exceptions to the kernel and I/O). The availability of a high-level language implementation of Unix made its porting to different computer platforms easier.
Users and groups are used on GNU/Linux for access control that is, to control access to the system's files, directories, and peripherals. Linux offers relatively simple/coarse access control mechanisms by default.
This lecture discusses the different techniques used to install, uninstall and upgrade software packages in Linux and the associated tools
Video for this lecture on youtube:
http://www.youtube.com/watch?v=pFqdupd9wKk
Check the other Lectures and courses in
http://Linux4EnbeddedSystems.com
or Follow our Facebook Group at
- Facebook: @LinuxforEmbeddedSystems
Lecturer Profile:
Ahmed ElArabawy
- https://www.linkedin.com/in/ahmedelarabawy
LInux: Basics & File System:The Unix operating system was conceived and implemented in 1969 at AT&T's Bell Laboratories in the United States by Ken Thompson, Dennis Ritchie, Douglas McIlroy, and Joe Ossanna. First released in 1971, Unix was written entirely in assembly language, as was common practice at the time. Later, in a key pioneering approach in 1973, it was rewritten in the C programming language by Dennis Ritchie (with exceptions to the kernel and I/O). The availability of a high-level language implementation of Unix made its porting to different computer platforms easier.
This lecture discusses the concept of Multi-User support in Linux. It discusses how Linux protects user files and resources from other user unauthorized access. It also shows how to share resources and files among users, how to add/del users and groups.
Check the other Lectures and courses in
http://Linux4EnbeddedSystems.com
or Follow our Facebook Group at
- Facebook: @LinuxforEmbeddedSystems
Lecturer Profile:
- https://www.linkedin.com/in/ahmedelarabawy
Getting started with setting up embedded platform requires audience to understand some of the key aspects of Linux. This presentation deals with basics of Linux as an OS, Linux commands, vi editor, Shell features like redirection, pipes and shell scripting
Part 02 Linux Kernel Module ProgrammingTushar B Kute
Presentation on "Linux Kernel Module Programming".
Presented at Army Institute of Technology, Pune for FDP on "Basics of Linux Kernel Programming". by Tushar B Kute (http://tusharkute.com).
Introduction to users and groups in Linux. We will explore how to set user expiry information and force user password change after certain period of time. We will be also providing different permission to users and groups and restricting users and groups operations using sudoers file
I have tried my best to describe Samba Server through this PPT. I hope you guys will love this and this ppt will be helpful for you all.
Thanks,
Veeral Arora
This lecture discusses the concept of Multi-User support in Linux. It discusses how Linux protects user files and resources from other user unauthorized access. It also shows how to share resources and files among users, how to add/del users and groups.
Check the other Lectures and courses in
http://Linux4EnbeddedSystems.com
or Follow our Facebook Group at
- Facebook: @LinuxforEmbeddedSystems
Lecturer Profile:
- https://www.linkedin.com/in/ahmedelarabawy
Getting started with setting up embedded platform requires audience to understand some of the key aspects of Linux. This presentation deals with basics of Linux as an OS, Linux commands, vi editor, Shell features like redirection, pipes and shell scripting
Part 02 Linux Kernel Module ProgrammingTushar B Kute
Presentation on "Linux Kernel Module Programming".
Presented at Army Institute of Technology, Pune for FDP on "Basics of Linux Kernel Programming". by Tushar B Kute (http://tusharkute.com).
Introduction to users and groups in Linux. We will explore how to set user expiry information and force user password change after certain period of time. We will be also providing different permission to users and groups and restricting users and groups operations using sudoers file
I have tried my best to describe Samba Server through this PPT. I hope you guys will love this and this ppt will be helpful for you all.
Thanks,
Veeral Arora
A talk I gave to the Triangle Linux Users Group ( http://www.trilug.org/ ) on 11-Jan-2003 on how to build RPM packages. Probably fairly outdated at this point.
OSDC 2013 | Software Packaging with RPM Demystified by Andrew FordNETWAYS
There is a dearth of definitive information about packing with RPM. This talk will fill in those gaps, covering details of constructing a solid spec file, writing install scripts and triggers, aspects of packaging that need to be considered, and differences between versions of RPM corresponding to currently supported versions of Red Hat and SUSE enterprise distros, as well as Fedora and openSUSE.
Yum is known as Red Hat package manager, use to get information about available packages, fetch packages from repositories.
It is also used to install and uninstall packages and update single packages as well as an entire system with the latest available version.
Yum package manager is top-rated in Red Hat-based Linux distribution to install and update packages as it automatically resolves the dependency while install, remove or update packages and install them properly.
Yum having capabilities to be configured with new and additional repositories, source of packages, and having many plug-ins to enhance and extend capabilities of its features.
Read this document in html here: https://linuxconcept.com/yum-package-manager-a-complete-guide/
Images of 1st, 2nd and 6th belong to DreamWorks Animation
Image of K Computer belongs to Fujitsu.
Presentation made not for commercial use, but educational.
Steps to create an RPM package in LinuxManish Chopra
This exercise was done on RHEL 6 and same steps are applicable for other variants too. This tutorial provides you with steps to create your own RPM packages in Linux. Following procedure shows creating a basic RPM package that includes a shell script. After the RPM is installed, the script is executed on the command prompt to display the output.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Final project report on grocery store management system..pdf
package mangement
1.
2. Package management
• It is a method of installing software(packages) on Linux
from software repositories.
• Repositories are servers from where we can download
packages.
• The features of package management applications are:
1. Package downloading
2. Dependency resolution
3. Quality control
• Install, reinstall, upgrade, and remove packages.
3. Package management
• Mainly two type packages;
1. rpm (redhat package manager).
extension - .rpm
OS-Centos,Fedora...
2. dpkg (debian package manger).
extension - .deb
OS-Ubundu,Kali Linux...
●
Centos have two package managing tool.
1. # rpm
2. # yum
4. Package management using rpm
It is a lower level tool.
It allows you to interact with individual packages.
Operating systems using rpm are:
- Centos
- Fedora
- SUSE
- OpenSuSE
- Mandriva
5. Package management using rpm
There are 5 basic modes for RPM command.
- Install
- Remove
- Upgrade
- Verify
- Query
6. Package management using rpm
Syntax of rpm:
# rpm [switch] [package name]
Check the architecture of system OS.
# arch
To check OS:
# vim /etc/issue
or
# vim /etc/centos-release
8. Package management using rpm
1. # rpm -ih [package name]
i – installation
h – hashing(status of installation)
2. # rpm -qa
q - query
a - all
3. # rpm -qf /usr/bin/ssh
f – file
4. # rpm -qc [package name]
c – configuration
5. # rpm -e [package name]
e - erase
9. Package management using rpm
Issues:
- Dependency error.
Ex : create repo
- it need packages such as
- deltarpm
- python delta rpm
# rpm -qRp [package name]
10. YUM-[YellowDog Updater Modified]
Used to install packages with dependency.
Syntax:
# yum install <package name> -y
1. # yum search <package name>
2. # yum list installed
3. # yum list all
4. # yum remove <package name> -y
5. # yum update <package name> -y
6. # yum check-update
7. # yum repolist enabled/disabled/all
11. YUM-[YellowDog Updater Modified]
Configuration file:
/etc/yum.repos.d
The files inside yum.repos.d is repository files
Repositary files will have the location from which packages can
be downloarded based on our OS architecture.
This location is servers
And servers are the repositories
12. Repositories
To enable extra repositories
1. EPEL repo (Extra Packages for Enterprise Linux)
- fastest repo
2. REMI repo
3. rpmforge repo
