This document provides a summary of basic Linux commands including:
- ls to list files and directories
- cp to copy files
- mv to move files
- rm to remove files
- touch to create empty files
- cat to output a file's contents
- mkdir to create directories
- grep to search for patterns in files
- wc to count lines, words, and characters
- whoami to print the current user
This presentation gives overview or our Ganeti deployment
There is related YouTube playlist (in Croatian) with presentations https://www.youtube.com/playlist?list=PLDMnMa3XBHD_K6Rl2FBe2CC-MS6mdTOrJ
Slides from a talk at HPC Admintech 2019 about containers, a brief review on containers, how to create a container using common linux tools and how to integrate Docker with Slurm.
Small, Simple, and Secure: Alpine Linux under the MicroscopeDocker, Inc.
Alpine Linux is a distro that has become popular for Docker images. Why do we need another distro? Why does Alpine matter? How does it differ from other distros?
In this talk, we'll answer all these questions – and a few more.
This is a slightly updated draft of a talk I was planning on giving at Hadoop Summit in 2015. However the abstract was rejected. Rather than toss it, I'm going to share it with all of you on the (almost) 1 year anniversary of the first big commit of this feature!
Keep in mind that this is (currently) locked away in trunk. If you ever want to see this see the light of day, bug your vendors....
Packet Filter is OpenBSD's system for filtering TCP/IP traffic and doing Network Address Translation. PF is also capable of normalizing and conditioning TCP/IP traffic, as well as providing bandwidth control and packet prioritization.
SCALE 15x Minimizing PostgreSQL Major Version Upgrade DowntimeJeff Frost
Let's face it, major version upgrades can be a pain. Most people are familiar with the dump/restore method, but if your database happens to be larger than a few GB, the downtime required for dump/restore is likely going to exceed your maximum maintenance window.
We'll briefly explore upgrade options including dump/restore, pg_upgrade and logical replication tools like Slony and why I think Slony is currently the best option. Then we'll run through a tutorial on how to use slony for a major version upgrade with minimal downtime.
You can find the scripts used in the demos here:
https://github.com/jfrost/scale-15x-talk
This presentation gives overview or our Ganeti deployment
There is related YouTube playlist (in Croatian) with presentations https://www.youtube.com/playlist?list=PLDMnMa3XBHD_K6Rl2FBe2CC-MS6mdTOrJ
Slides from a talk at HPC Admintech 2019 about containers, a brief review on containers, how to create a container using common linux tools and how to integrate Docker with Slurm.
Small, Simple, and Secure: Alpine Linux under the MicroscopeDocker, Inc.
Alpine Linux is a distro that has become popular for Docker images. Why do we need another distro? Why does Alpine matter? How does it differ from other distros?
In this talk, we'll answer all these questions – and a few more.
This is a slightly updated draft of a talk I was planning on giving at Hadoop Summit in 2015. However the abstract was rejected. Rather than toss it, I'm going to share it with all of you on the (almost) 1 year anniversary of the first big commit of this feature!
Keep in mind that this is (currently) locked away in trunk. If you ever want to see this see the light of day, bug your vendors....
Packet Filter is OpenBSD's system for filtering TCP/IP traffic and doing Network Address Translation. PF is also capable of normalizing and conditioning TCP/IP traffic, as well as providing bandwidth control and packet prioritization.
SCALE 15x Minimizing PostgreSQL Major Version Upgrade DowntimeJeff Frost
Let's face it, major version upgrades can be a pain. Most people are familiar with the dump/restore method, but if your database happens to be larger than a few GB, the downtime required for dump/restore is likely going to exceed your maximum maintenance window.
We'll briefly explore upgrade options including dump/restore, pg_upgrade and logical replication tools like Slony and why I think Slony is currently the best option. Then we'll run through a tutorial on how to use slony for a major version upgrade with minimal downtime.
You can find the scripts used in the demos here:
https://github.com/jfrost/scale-15x-talk
slides on understanding workplace ethics, what it affects, benefits of workplace ethics, slides on ethic codes, codes of conduct, values, ethic programs, required resources, two ethical styles, 3 steps to resolve ethical dilemmas and how to address ethical dilemmas, guidelines and slides on implementing ethic programs, detecting 6 key roles and responsibilities, guidelines for moral decision making, 10 common ethic code provisions, 15 slides on creating an effective code of conduct, and more.
Introduction to Docker (as presented at December 2013 Global Hackathon)Jérôme Petazzoni
Not on board of the Docker ship yet? This presentation will get you up to speed, and explain everything you want to know about Linux Containers and Docker, including the new features of the latest 0.7 version (which brings support for all Linux distros and kernels).
Tomáš Čorej: Configuration management & CFEngine3Jano Suchal
CFEngine is the oldest tool for configuration management that inspired Puppet & Chef. Features like model-based monitoring, promise theory and knowledge management support makes it an reasonable alternative for IT system automatization.
Docker and Containers for Development and Deployment — SCALE12XJérôme Petazzoni
Docker is an Open Source engine to build, run, and manage containers. We'll explain what are Linux Containers, what powers them (under the hood), and what extra value Docker brings to the table. Then we'll see what the typical Docker workflow looks like from a developer point of view. We'll also give an Ops perspective, including deployment options. If you already saw a "Docker 101", consider this presentation as the February 2014 update! :-)
Riding the Binlog: an in Deep Dissection of the Replication StreamJean-François Gagné
Binary Logs are the cornerstone of MySQL Replication, but is it fully understood ? To start apprehending this, we can think of the binary logs as a transport for a Stream of Transactions. Traveling from master to slave, sometimes via Intermediate Masters, this stream evolves: it can shrink by the application of filters, can grow by the addition of slave-local transactions, and two streams can merge by the usage of multi-source replication. After presenting the binary logs Stream Model, the different MySQL use-cases will be mapped to the model, which can serve as a validation of the model. After this validation, the model will be used to make prediction on new use-cases/features that could emerge in the future.
Docker Introduction, and what's new in 0.9 — Docker Palo Alto at RelateIQJérôme Petazzoni
Docker is the Open Source container engine. This is an introduction to Docker, what it is, how it works, and some material presenting the new features in versions 0.8 and 0.9.
Designate Install and Operate WorkshopGraham Hayes
Designate provides DNSaaS services for OpenStack.
This interactive workshop will guide attendees on how Designate can be installed with PowerDNS. For the purposes of the workshop the various designate components will be installed on a single node. Once installed it shows some of the V1 and V2 APIs for domain and record management. The workshop will conclude by using a tool like dig to retrieve the added records from the PowerDNS backend, showing a fully functional by-hand deployment.
The workshop will also cover the steps for contributing to the development of Designate.
Several of the Designate contributors will be on hand during the workshop to help attendees work through the deployment.
InstructionsInstructions for numberguessernumberGuesser.html.docxdirkrplav
Instructions/Instructions for numberguesser/numberGuesser.html
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Instructions/Instructions for shoerental/Page 316.PNG
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Instructions/Instructions for shoerental/ShoeRentalClass.html
Instructions/lab4.docx
1. Complete the Programmers Workshop on pg 313-316 (Including Detective Work). Upload the numberGuesser.html file here.
2. Complete the Object Lesson on pg 316-320 (Including Detective Work). Upload the ShoeRentalClass.html page you create here.
Introduction to Unix - POS420
Unix Lab Exercise Week 5
Job Control :
1. How to suspend the jobs running in foreground ?
Open a file in vi and press CTRL-Z to put it into background
$ vi filename
CTRL-Z
filename[New file]
[1] + Stopped vi filename
$
where 1 is the job number, + or - make the current and previous jobs.
2. How to make it run in foreground ?
You can use fg command to make it run in foreground. If more than one job is suspended, you can use fg %n where n is the number is the sequence of the process to make that process come in foreground.
$ fg %1
Now you will see vi editor again.
3. How to make it run in background ? (Only stopped jobs)
You can use bg command to make it run in background. If more than one job is suspended, you can use bg %n where n is the number is the sequence of the process to make that process come in background.
Let us suspend this job one more time.
$ vi filename
CTRL-Z
filename[New file]
[1] + Stopped vi filename
$
Let us run in background .
$ bg %1
4. Another way to suspend a job by using kill command.
Run vi in this session.
Open another connection through telnet. Now you have two sessions.
Type ps command to see what processes are running.
$ ps
PID TT STAT TIME COMMAND
5226 q7 S 0:01 -ksh (ksh) - This is new shell
6314 q7 R 0:00 ps
5487 ub S 0:00 -ksh (ksh) - This is previous shell
6312 ub S 0:00 vi filename - vi is running in previous session.
Now send a STOP signal to the process. kill -l will give you a lo\ist of signals.
$ kill -STOP 6312
Now you will see this in the other session
[1] + Stopped (signal) vi filename
To .
Video: https://www.youtube.com/watch?v=uibLwoVKjec . Talk by Brendan Gregg for Sysdig CCWFS 2016. Abstract:
"You have a system with an advanced programmatic tracer: do you know what to do with it? Brendan has used numerous tracers in production environments, and has published hundreds of tracing-based tools. In this talk he will share tips and know-how for creating CLI tracing tools and GUI visualizations, to solve real problems effectively. Programmatic tracing is an amazing superpower, and this talk will show you how to wield it!"
Similar to Linuxcommands 091018105536-phpapp01 (20)
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Embracing GenAI - A Strategic ImperativePeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
2. LIST...
● ls [options] [file|directory]
●
-l
● will output the files and directories in long list
format.
-s, --size
print the size of each file, in blocks
-S sort by file size
-a, --all
do not ignore entries starting with .
4. ● ls list all files
● ls -l list all files with details
● ls *.gif list gif files
● ls *.gif -l list gif files with details
● ls | wc -l count all files
● ls *.gif | ws -l count gif files
● (wc = word count)
5. COPY...
● cp [OPTION]... SOURCE DEST
● cp
is the Linux copy command, this shell
command is used to copy files|directories from
one location on the filesystem to another.
6. options.
● -f, --force
● if an existing destination file cannot be
opened, remove it and try again
● -i, --interactive
● prompt before overwrite
● -R, -r, --recursive
● copy directories recursively
7. ● cp *.txt text
● It will copy all files ending in .txt into the text
directory.
●
To copy a file to your home directory:
cp /usr/local/doc/ue.txt $HOME
This copies the file ue.txt to your home directory
8. ● To copy a file to the parent directory:
● cp mail.txt ..
● This copies the file mail.txt to the directory
immediately above the current working
directory.
9. f, --force if an existing destination file cannot be opened,
-
remove it and try again
• -i, --interactive prompt before overwrite
• -l, --link link files instead of copying.
• -p same as --preserve=mode,ownership,timestamps
• -R, -r, --recursive copy directories recursively
• -s, --symbolic-link make symbolic links instead of copying
• -u, --update copy only when the SOURCE file is newer than
the destination file or when the destination file is missing
• -v, --verbose explain what is being done
10. MOVE....
● mv [OPTION]... [-T] SOURCE DEST
● the Linux terminal command to move files|
directories. Like the cp command, but deletes
the original source.
11. REMOVE...
● rm -f [file]
● option is if you are wanting to force a file to
be removed
● rm -r files
● (recursive remove) Remove files,
directories, and their subdirectories
12. TOUCH....
● arul@arul-desktop:~/Desktop$ ls
● Home.desktop ShellIntro.pdf su
trash.desktop
● arul@arul-desktop:~/Desktop$ touch new
new1 new2
● arul@arul-desktop:~/Desktop$ ls
● abc Home.desktop new new1 new2
ShellIntro.pdf su trash.desktop zxc
13. CAT...
● The Linux cat command is the Unix command
to list a file’s contents onto your screen, or pass
via pipeline to use with other Linux commands.
The cat command comes from the word
concatenate.
14. ● arul@arul-desktop:~/Desktop$ cat new
● arul@arul-desktop:~/Desktop$ vim new
● arul@arul-desktop:~/Desktop$ cat new
● sure
● arul
● shrini
15. mkdir
● The Linux command mkdir is used to make
directories in Linux.
● mkdir - make directories
●
16. Example
● arul@arul-desktop:~/Desktop$ ls
● abc Home.desktop new new1 new2
ShellIntro.pdf su trash.desktop zxc
● arul@arul-desktop:~/Desktop$ mkdir comm
● arul@arul-desktop:~/Desktop$ ls
● abc comm Home.desktop new new1
new2 ShellIntro.pdf su trash.desktop zxc
17. grep
grep [OPTIONS] PATTERN [FILE...]
● The Linux grep command is used to extract
lines of data from files
●
arul@arul-desktop:~/Desktop$ grep sure new
sure
arul@arul-desktop:~/Desktop$ grep s new
sure
shrini
18. WORD COUNT...
● wc counts the characters,lines,words in a file.
● Options:
● -c output char., count
● -l output lines count
● -w output words count
19. Example
● wc -w linux.txt
● 34
● Display the word count for linux.txt
● Defult: -clw
20. WHO AM I
● Find which user is loged
shrinivasan@shrinivasan-laptop:~$ whoami
shrinivasan
21. DATE
● For display the today's date.
● Date prints the systems time and date.
● shrinivasan@shrinivasan-laptop:~$ date
● Sun Oct 18 13:46:29 IST 2009
22. CALENDAR..
● Cal prints an ASCII calendar of the current
month.
● Cal display the calendar
● shrinivasan@shrinivasan-laptop:~$ cal
October 2009
Su Mo Tu We Th Fr Sa
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31
23. EXAMPLE
● shrinivasan@shrinivasan-laptop:~$ cal 12 1988
● December 1988
● Su Mo Tu We Th Fr Sa
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31
24. At command
● shrinivasan@shrinivasan-laptop:~$ at 13:57
● warning: commands will be executed using /bin/
sh
● at> echo "hello" > hai
● at> <EOT>
shrinivasan@shrinivasan-laptop:~$ touch hai
●
shrinivasan@shrinivasan-laptop:~$ cat hai
hello
25. Ps
● ps - report a snapshot of the current processes
● To see every process on the system using BSD
syntax:
● ps -ax
● ps -axu