This article describes important Linux commands that you must know as a system or database administrator.
Here is the full article link: https://www.support.dbagenesis.com/post/important-linux-commands
Course 102: Lecture 24: Archiving and Compression of Files Ahmed El-Arabawy
This lecture discusses the different commands and utilities used for archiving and compression of files and directories in Linux
Video for this lecture on youtube:
http://www.youtube.com/watch?v=R6ZQ6PJyy28
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
Course 102: Lecture 26: FileSystems in Linux (Part 1) Ahmed El-Arabawy
This lecture introduces some concepts about FileSystems in Linux.
Video for this lecture on youtube:
http://www.youtube.com/watch?v=9jj1QOokACo
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
This article describes important Linux commands that you must know as a system or database administrator.
Here is the full article link: https://www.support.dbagenesis.com/post/important-linux-commands
Course 102: Lecture 24: Archiving and Compression of Files Ahmed El-Arabawy
This lecture discusses the different commands and utilities used for archiving and compression of files and directories in Linux
Video for this lecture on youtube:
http://www.youtube.com/watch?v=R6ZQ6PJyy28
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
Course 102: Lecture 26: FileSystems in Linux (Part 1) Ahmed El-Arabawy
This lecture introduces some concepts about FileSystems in Linux.
Video for this lecture on youtube:
http://www.youtube.com/watch?v=9jj1QOokACo
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
The Linux Kernel Implementation of Pipes and FIFOsDivye Kapoor
A walkthrough of the code structure used in the linux kernel to implement pipes and FIFOs.
This was presented to a Senior level class at the Indian Institute of Technology, Roorkee.
Our lab planned a one-week lecture for bioinformatics beginners. I am right now the system administrator of Linux servers, NAS and Vms, so i want to teach the basics of linux system for new Linux users. And i wish to share my slide with you.
Part 03 File System Implementation in LinuxTushar B Kute
Presentation on "Virtual File System Implementation in Linux".
Presented at Army Institute of Technology, Pune for FDP on "Basics of Linux Kernel Programming". by Tushar B Kute (http://tusharkute.com).
CompTIA Linux+ Powered by LPI certifies foundational skills and knowledge of Linux. With Linux being the central operating system for much of the world’s IT infrastructure, Linux+ is an essential credential for individuals working in IT, especially those on the path of a Web and software development career. With CompTIA’s Linux+ Powered by LPI certification, you’ll acquire the fundamental skills and knowledge you need to successfully configure, manage and troubleshoot Linux systems. Recommended experience for this certification includes CompTIA A+, CompTIA Network+ and 12 months of Linux admin experience. No prerequisites required.
The Linux Kernel Implementation of Pipes and FIFOsDivye Kapoor
A walkthrough of the code structure used in the linux kernel to implement pipes and FIFOs.
This was presented to a Senior level class at the Indian Institute of Technology, Roorkee.
Our lab planned a one-week lecture for bioinformatics beginners. I am right now the system administrator of Linux servers, NAS and Vms, so i want to teach the basics of linux system for new Linux users. And i wish to share my slide with you.
Part 03 File System Implementation in LinuxTushar B Kute
Presentation on "Virtual File System Implementation in Linux".
Presented at Army Institute of Technology, Pune for FDP on "Basics of Linux Kernel Programming". by Tushar B Kute (http://tusharkute.com).
CompTIA Linux+ Powered by LPI certifies foundational skills and knowledge of Linux. With Linux being the central operating system for much of the world’s IT infrastructure, Linux+ is an essential credential for individuals working in IT, especially those on the path of a Web and software development career. With CompTIA’s Linux+ Powered by LPI certification, you’ll acquire the fundamental skills and knowledge you need to successfully configure, manage and troubleshoot Linux systems. Recommended experience for this certification includes CompTIA A+, CompTIA Network+ and 12 months of Linux admin experience. No prerequisites required.
There is a pressing need to distribute accurate timing, i.e., frequency and/or Time of Day (ToD), across Packet Switched Networks (PSNs) for applications such as cellular backhaul. This paper reviews the main issues involved in timing over packet (ToP) demarcation and provides best practices for ToP demarcation and performance monitoring.
GNU Toolchain is the de facto standard of IT industrial and has been improved by comprehensive open source contributions. In this session, it is expected to cover the mechanism of compiler driver, system interaction (take GNU/Linux for example), linker, C runtime library, and the related dynamic linker. Instead of analyzing the system design, the session is use case driven and illustrated progressively.
Useful Linux and Unix commands handbookWave Digitech
This article provides practical examples for most frequently used commands in Linux / UNIX. Helpful for Engineers and trainee engineers, Software developers. A handy notes for all Linux & Unix commands.
This presentation will provide the information about the Linux Root File systems and its hierarchy. So any technocrate who is willing to gain info about root files of Linux can easily understand . preffered for Embedded system design Students who are pursuing diploma courses in various CDAC centers.
This lecture covers the structure of the Linux filesystem layout and the concept of mounting different filesystems in the main filesystem
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
The manual of the GTK+ 2.0 application - Desktop App Chooser which let the user to browse all installed X desktop applications and retrieve the Desktop Entry content of each application.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
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
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
Welocme to ViralQR, your best QR code generator.ViralQR
Welcome to ViralQR, your best QR code generator available on the market!
At ViralQR, we design static and dynamic QR codes. Our mission is to make business operations easier and customer engagement more powerful through the use of QR technology. Be it a small-scale business or a huge enterprise, our easy-to-use platform provides multiple choices that can be tailored according to your company's branding and marketing strategies.
Our Vision
We are here to make the process of creating QR codes easy and smooth, thus enhancing customer interaction and making business more fluid. We very strongly believe in the ability of QR codes to change the world for businesses in their interaction with customers and are set on making that technology accessible and usable far and wide.
Our Achievements
Ever since its inception, we have successfully served many clients by offering QR codes in their marketing, service delivery, and collection of feedback across various industries. Our platform has been recognized for its ease of use and amazing features, which helped a business to make QR codes.
Our Services
At ViralQR, here is a comprehensive suite of services that caters to your very needs:
Static QR Codes: Create free static QR codes. These QR codes are able to store significant information such as URLs, vCards, plain text, emails and SMS, Wi-Fi credentials, and Bitcoin addresses.
Dynamic QR codes: These also have all the advanced features but are subscription-based. They can directly link to PDF files, images, micro-landing pages, social accounts, review forms, business pages, and applications. In addition, they can be branded with CTAs, frames, patterns, colors, and logos to enhance your branding.
Pricing and Packages
Additionally, there is a 14-day free offer to ViralQR, which is an exceptional opportunity for new users to take a feel of this platform. One can easily subscribe from there and experience the full dynamic of using QR codes. The subscription plans are not only meant for business; they are priced very flexibly so that literally every business could afford to benefit from our service.
Why choose us?
ViralQR will provide services for marketing, advertising, catering, retail, and the like. The QR codes can be posted on fliers, packaging, merchandise, and banners, as well as to substitute for cash and cards in a restaurant or coffee shop. With QR codes integrated into your business, improve customer engagement and streamline operations.
Comprehensive Analytics
Subscribers of ViralQR receive detailed analytics and tracking tools in light of having a view of the core values of QR code performance. Our analytics dashboard shows aggregate views and unique views, as well as detailed information about each impression, including time, device, browser, and estimated location by city and country.
So, thank you for choosing ViralQR; we have an offer of nothing but the best in terms of QR code services to meet business diversity!
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
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.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
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.
SAP Sapphire 2024 - ASUG301 building better apps with SAP Fiori.pdfPeter Spielvogel
Building better applications for business users with SAP Fiori.
• What is SAP Fiori and why it matters to you
• How a better user experience drives measurable business benefits
• How to get started with SAP Fiori today
• How SAP Fiori elements accelerates application development
• How SAP Build Code includes SAP Fiori tools and other generative artificial intelligence capabilities
• How SAP Fiori paves the way for using AI in SAP apps
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
Generative AI Deep Dive: Advancing from Proof of Concept to ProductionAggregage
Join Maher Hanafi, VP of Engineering at Betterworks, in this new session where he'll share a practical framework to transform Gen AI prototypes into impactful products! He'll delve into the complexities of data collection and management, model selection and optimization, and ensuring security, scalability, and responsible use.
3. CDR - Call Detail Records
CDR contains information about calls that have
passed through Asterisk system
Asterisk assumes that you want to store CDR
information
CDR is store in CSV (Comma-Separated Value)
format
Asterisk CDR (1/4)
4. By default, Asterisk creates a CDR file named
Master.csv in the folder
/var/log/asterisk/cdr-csv
and call information is stored in this file
To the naked eye, Master.csv file’s content
looks like a bit of a mess. If, however, you
separate each line according to the commas,
you will find that each line contains information
about a particular call.
Asterisk CDR (2/4)
5. A Comma-Separated Values (CSV) file is a
common method of formatting database-type
information in a text file
You can open CSV files with a text editor, but
most spreadsheet(likes Microsoft Excel) and
database programs will also read them and
properly parse them into rows and columns
Asterisk CDR (3/4)
6. By default, Asterisk will simply add to the files
until the storage (hard drive or other non-valotile
storage) is full
In Asterisk 1.4
Basic call (2-way) generates 245 ~ 247 bytes of CDR
content
Conference call (3-way) generates around 494 bytes
of CDR content
Asterisk CDR (4/4)
7. Linux provides utilities to handle the rotation of
log files
So that no single file becomes too large
Also, the deletion of older logfiles (which will prevent
the system from getting clogged with log files)
logrotate is a tool to do “log rotation” :
Regular (daily, weekly, monthly, etc) moving of an
existing log file to some other file name and starting
fresh with an empty log file
After a period the old log files get thrown away
Logrotate (1/2)
8. logrotate tool is often run on a cron job, which
has the effect of fully automatic log rotation
One of downloadable site for source :
https://fedorahosted.org/logrotate/
Logrotate (2/2)
9. cron is a job scheduling facility in Linux/Unix
system.
The cron system is managed by cron daemone,
crond
It gets information about which program and when
they should run
At system startup cron daemon is invoked
Cron (1/7)
10. cron daemone searches following target every
minute
/etc/cron.d folder
/etc/crontab file(cron table)
/var/spool/cron folder
Under /etc/cron.d and /var/spool/cron folder
there have shell script files named after accounts in
/etc/passpwd file and
are executed by cron daemone when it is time to do
scheduled job
Cron (2/7)
11. On system using Vixie cron, jobs that occure
hourly, daily, weekly and monthly are kept in
separate directories in /etc:
/etc/cron.hourly
/etc/cron.daily
/etc/cron.weekly
/etc/cron.monthly
/etc/crontab stores these folders as table
entries
Cron (3/7)
12. Vixie cron uses the program run-parts
to run shell scripts in each folder listed in
/etc/crontab
Cron (4/7)
13. On CentOS 6, Vixie cron uses the program
run-parts to run shell scripts in each folder listed
in /etc/anacrontab
Cron (5/7)
15. Note:
In MS-Windows environment, there has a built-in tool
functioning as Cron named
Windows Task Scheduler
http://en.wikipedia.org/wiki/Windows_Task_Scheduler
Cron (7/7)
16. To do Asterisk CDR log rotation, it needs to
configure cron job using lograte tool
Create a folder named logrotate.d in /etc
Create a logrotate configuration file named asterisk
in /etc/logrotate.d and place following content in this
file (here setting maximum size of CDR file to 70K
bytes for example)
Put All Together (1/3)
/var/log/asterisk/cdr-csv/Master.csv {
daily
missingok
size 70k
rotate 2
copytruncate
}
17. Create a shell script named logrotate in
/etc/cron.daily and its content is as below (assume
logrotate could be invoked from directory
/usr/sbin):
Put All Together (2/3)
#!/bin/sh
/usr/sbin/logrotate /etc/logrotate.d/asterisk
EXITVALUE=$?
if [ $EXITVALUE != 0 ]; then
/usr/bin/logger -t logrotate "ALERT exited abnormally with
[$EXITVALUE]"
fi
exit 0
18. To see the status of execution of logrotate
/var/lib/ logrotate.status
How often does system do CDR log rotation?
Depening on call traffic volume, e.g the speed of
size increasing of Master.csv
Put All Together (3/3)
19. Asterisk CDR log rotation
http://www.voip-info.org/wiki/view/logrotate
http://www.voip-info.org/wiki/view/logrotate+Chinese
More information about the usage of logrotate
configuration file
http://www.thegeekstuff.com/2010/07/logrotate-
examples/
http://linuxconfig.org/logrotate
http://www-
uxsup.csx.cam.ac.uk/~jw35/courses/apache/html/x167
0.htm
Reference