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Signals in Linux/Unix
 
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Here, I have discussed about the signals in UNIX / LINUX in a very brief manner.
Views: 5175 Shriram Vasudevan
Signals in Linux
 
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Some brief training about Linux Signals. What they are and some examples of their use.
03 signals in Linux
 
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Please write comments if you find anything incorrect, or you want to share more information
Views: 2697 Prashant kothari
C Programming in Linux Tutorial #055 - Signals
 
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C Programming in Linux Tutorial using GCC compiler. Tutorial should also be applicable in C/UNIX programming. An example on how to create and use signals in C program.
Views: 30553 ShellWave
Sending and Handling Signals in Linux (kill, signal, sigaction)
 
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About me: I'm a computer scientist, researcher, teacher, and Internet of Things enthusiast. I teach systems and networking courses at Clemson University. I lead the PERSIST research lab. More about me and what I do: https://people.cs.clemson.edu/~jsorber/ http://persist.cs.clemson.edu/
Views: 4292 Jacob Sorber
Linux Sysadmin Basics -- 6.1 Process Signals
 
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In this video I take a look at Linux inter-process communication using signals. We'll take a look at the interplay between the kernel and processes (and sometimes the user). Believe it or not, you can learn the basics pretty quickly and get some insights that are useful in the daily life of a Sysadmin. Some commands we cover in the process (hurr hurr): -kill (sending signals) -killall -pgrep -pkill
Views: 57634 tutoriaLinux
IPC Signals Linux - Absolute Beginners
 
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C Program on Signals for Absolute Beginners. https://github.com/nanolearningmodules/cFunda ( signal.c) gcc signal.c -o signal ./signal open another terminal and find the process id and kill it ( ps -ef |grep signal ; kill -SIGTERM PID)
Views: 1580 LM Nano
Sockets in Linux System Programming
 
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Here, I discuss the Sockets concept in Linux system programming with code and explanation
Views: 7849 Shriram Vasudevan
C Programming in Linux Tutorial #029 - pthreads
 
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C Programming in Linux Tutorial using GCC compiler. Tutorial should also be applicable in C/UNIX programming. An example on how to create threads using the POSIX threads, or pthreads.
Views: 43493 ShellWave
Signals-introduction and kill system call -example-in linux
 
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Signals-introduction and kill system call -example-using linux-ubuntu-in pashto
Views: 45 pcs learning
Linux User/Kernel ABI: the realities of how C and C++ programs really talk to the OS - Greg Law
 
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Sorry for the slightly dark video - our screen recorder wouldnt work correctly for this talk so we opted for a wide shot including the screen. Hopefully this is still helpful and easy to view. All programs need to interact with the wider system in order to do useful work. C and C++ programmers typically write to the C library. It provides a mapping onto the OS that is a not-quite-perfect model of the OS underneath, and surprising behaviours can result. To be an expert programmer it is important to understand the ABI you are really programming to, for such times as you find yourself debugging via strace or without source code, fine grained profiling and optimisation, writing intercept libraries, etc. There are many gotchas. This talk covers how system calls are really implemented (int 0x80, sysenter, the vdso and the vsyscall page, and how return codes are translated into errno); how signal handlers really work (including the surprising syscall restart mechanism); how pthreads map onto OS primitives; the finer details of ptrace (the mechanism on top of which strace and gdb are built); and some interesting and surprising results when the subtleties of these various mechanism combine. Some of the other subtleties covered include what it means when things are in an uninterruptible sleep, and very useful info that can be gathered from the /proc filesystem.
Views: 3222 ACCU Conference
C Programming in Linux Tutorial #055   Signals
 
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Views: 136 Desi Hut 1947
Linux - Traps and signals
 
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Linux - Traps and signals Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Ms. Mamta Tripathi, Tutorials Point India Private Limited.
signal.h library C programming  in Linux Ubuntu video tutorial
 
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how to use interrupt and interrupt handling in C programming language. video tutorial of C programs.
Views: 5595 naveen davis
Linux Well known signals
 
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Linux Well known signals For complete course, VISIT IPC course @ : csepracticals.wixsite.com/csepracticals
Views: 42 CSE Practicals
An Introduction to Linux IPC Facilities
 
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Presenter(s): Michael Kerrisk URL: http://lca2013.linux.org.au/schedule/30020/view_talk Pipes, FIFOs, signals, datagram and stream sockets (and sockets in the Unix versus Internet domains), file locks (various kinds!), environment variables, memory mappings, event file descriptors (eventfd), pseudo-terminals, message queues, semaphores, shared memory, and good old regular files... The range of interprocess communication and synchronization (often referred to collectively as IPC) facilities available on Linux can at first seem bewildering. Which facilities should an application use? This tutorial provides an overview of each of the IPC facilities, showing the features that the different facilities have in common, and the features that distinguish them. The aims of this tutorial are to provide developers with examples of the use of each of the IPC facilities and the beginnings of a roadmap to help decide which IPC facilities are likely to be most suitable when writing new applications. I'll compare different IPC facilities using measures such as portability, flexibility, ease of use, operational limits, configurability, persistence (lifetime), access control, integration with the traditional Unix "everything is a file" model and the UNIX/Linux API in general, and specific functional advantages and disadvantages. I'll also briefly consider whether one can make any general statements about relative performance of different IPC facilities. Although aimed primarily at developers, other participants (e.g., system administrators) may find the tutorial useful for gaining greater insight into the operation, configuration, and management of the various IPC facilities. A reading knowledge of C will be useful. http://lca2013.linux.org.au/ - http://www.linux.org.au CC BY-SA - http://creativecommons.org/licenses/by-sa/4.0/legalcode.txt
C Programming in Linux Tutorial #026 - fork() Function
 
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C Programming in Linux Tutorial using GCC compiler. Tutorial should also be applicable in C/UNIX programming. An example on how to create a child process using the fork() function in a C program.
Views: 31903 ShellWave
Señales (Signals) en Linux, programar Signal handler en C
 
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Señales en Linux Comando Kill, comando ps Programar la función Handler que atiende a la señal
Views: 1413 WhileTrueThenDream
Socket Programming Basics Presentation
 
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Full Video Details: http://www.securitytube.net/video/17
Views: 248042 TheSecurityTube
Unix/Linux System Programming with UBUNTU - Message Queue Explanation
 
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My session on Unix/Linux system programming - Here, I speak about the implementation of Message Queue with real time examples.
Views: 269 Shriram Vasudevan
Основы Linux: сигналы и управление процессами
 
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Механизм сигналов * Немаскируемые и неперехватываемые сигналы * Системный вызов kill() Управление процессами * Управляющий терминал, команда stty ** ^C и SIGINT ** ^\ и SIGQUIT ** ^Z и SIGTSTP * Группа переднего фона, группа заднего фона и сеанс ** Лидер группы и лидер сеанса ** Сигналы SIGTTIN и SIGTTOU ** Задания bash, команды fg и bg Дерево процессов * Системные (ядерные) процессы * Прародитель процессов init * Демоны * Прикладные процессы Об этом и о многом другом см. https://books.google.ru/books?isbn=5977535805
Views: 379 Dmitry Ketov
Part 2 of 2: How to use fork(), wait(), execl(), getpid() in C for processes
 
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If you found this video helpful you can support this channel through Venmo @letterq with 42 cents :)
Views: 106557 Q Liu
Linux Event Handling & Signal Handling.
 
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Explains Linux Signal handling & event handling mechanism.
Views: 7130 Koshy George
HakTip - Linux Terminal 101: Controlling Processes
 
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This week we are controlling the processes that we learned about last week. Last week we discussed processes- what they are and how to view them. Now, let's control those. Let's open the program called gedit- a text editing program. You'll notice your shell prompt will not return until the program is closed. Press CTRL-C to interrupt the program (or terminate). This works for most command-line programs but not all. Now run gedit again with an & at the end. This says we started job number 1, with a PID of 3853. Running ps shows the proccess as well. If you type jobs, this will also show you that gedit is running. (one job, number 1, command gedit &). To return the process to the foreground from the terminal, type jobs to find the number, then fg %1. To terminate again, press CTRL-C. Type CTRL-Z to completely stop a process. So if gedit is running, then type CTRL-Z to stop or pause it. You can restore the program with fg, or move it to the background with bg (bg %1). The number is optional if you only have one job running. Opening a graphical program may be essential if opening it in the GUI doesn't work or it's not listed in the window manager's menus. Do you want to completely kill the process? To do so, first type gedit &, get the PID, then type kill 3651. This will terminate the process. kill sends a signal to the process to terminate. When the terminal sees these keystrokes, it can send a signal to the process to do something. kill can have specified signals attached to it such as HUP for hang up (old school for computers that were online with phone lines), INT for interrupt (same as CTRL-C), TERM for terminate, STOP for stopping the process without terminating, CONT to continue after stopping, just to name a few. You can type kill -1 1234 to hang up, or type kill -INT 1234 to interrupt it. Use kill -l for a complete listing of signals you can send. Last but not least, you can send a signal to multiple processes. Type gedit & a couple of times for several instances of the program, then type killall gedit to kill all of the gedit instances. You must have user priveledges to send signals to processes that don't belong to you. To give you an idea of some other common processes, take a look at these commands: pstree (parent-child relationships of processes), vmstat (system resource usage), xload (system load graph) and tload (terminal graph). How do you control processes? There are other options out there. Make sure to email me [email protected] with your thoughts. And be sure to check out our sister show, http://www.hak5.org for more great stuff just like this. I'll be there, reminding you to trust your technolust.
Views: 28991 Hak5
Reverse Engineering Vehicle CAN Bus Signals
 
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This video illustrates techniques to decode vehicle CAN bus data to find various signals like engine rpm, brake and accelerator pedal.
Views: 62472 tejas chafekar
04 - Программирование Linux. Взаимодействие процессов
 
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Лектор: Кирилл Кринкин 1. Виды межпроцессного взаимодействия в Linux 2. Каналы 3. Сигналы 4. Разделяемая память 5. Мультиплексирование ввода-вывода 6. Задачи на программирование https://stepik.org/s/7qe7Ng4Z
Views: 2137 Roman Brovko
15 - Linux in 1 Minute - Send Signal to Process - kill
 
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Description of kill command that serves to send signal to processes. Subscribe to the channel! Click in like! Feel free to share the videos! Write a comment! Share it! Your participation is important!!!
Views: 2184 Othon Batista
Undestanding basics of Zombie process with example : Advanced Linux Programming # Tutorial - 7
 
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when a child process dies and has not been wait on, it will usually show up in a ps listing as "defunct". It will remain this way until the parent waits on it, when the parent dies before it wait()s for the child (assuming it is not ignoring SIGCHLD), the child is reparented to the init process (PID 1). This is not a problem if the child is still living well and under control. However, if the child is already defunct, we're in a bit of a bind. See, the original parent can no longer wait(), since it's dead.
Views: 21623 HowTo
Managing Linux processes with PS and KILL
 
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If you are serious about gaining your Linux Essentials certification you can gain a heavily discounted price to my Linux Essentials course via this link: https://www.udemy.com/learning-linux-essentials-taking-your-first-steps-in-linux/?couponCode=youtube-video More videos like this online at http://www.theurbanpenguin.com Learning to manage processes is essential to effective administration of your Linux host. The PS command . /bin/ps can be used to view processes and the kill command is used to send signals tp, niot just to kill, the process
Views: 20542 theurbanpenguin
16 - Linux in 1 Minute - Send Signal to Process - killall
 
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Description of command that sends signal to processes by command name: killall. Subscribe to the channel! Click in like! Feel free to share the videos! Write a comment! Share it! Your participation is important!!!
Views: 143 Othon Batista
Signal Delivery in linux
 
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A small video illustrating signal delivery mechanism in linux. The different states of threads are explored and analysed using kernelshark . A library to send signal to all threads in a process is also explained
Views: 1395 Prem Swaroop
Fork and Exec Linux Programming
 
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Demo using fork and exec to run an executable from disk in a new process. Show how to pass arguments, wait for child to complete, and how to spawn multiple children. Shows advantage of using multiple processes over a single process in terms of using CPU power of multiple processors (cores). Support videos via Patreon: https://www.patreon.com/DrBFraser Other Videos: - Fork: http://youtu.be/9seb8hddeK4 - Exec: http://youtu.be/mj2VjcOXXs4 - Eclipse Linux setup: http://youtu.be/E36QpJdEghg - Linux Programming playlist: https://www.youtube.com/watch?v=E36QpJdEghg&list=PL-suslzEBiMrqFeagWE9MMWR9ZiYgWq89
Views: 42949 Brian Fraser
Linux fork() Introduction
 
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Demo the use of the fork() function in Linux/Unix to spawn a new process. Cover the basics of what it does, how to do work in parent and child processes, and how to correctly terminate. Full code can be found at https://github.com/drbfraser/video-tutorial-code/tree/master/fork_demo Topics list below. See later videos in this playlist for use of exec(), and fork() with exec(). Support videos via Patreon: https://www.patreon.com/DrBFraser Topics: - Basics of fork and checking parent vs child - Building via command line and GCC - Structing code with a function to do work. - Seeing processes via ps -a - Demo having two separate address spaces - Return a value from child to parent using exit() and wait() - See zombie process - See fork in a loop.
Views: 132144 Brian Fraser
C Programming in Linux Tutorial #037 - pipe() Function
 
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C Programming in Linux Tutorial using GCC compiler. Tutorial should also be applicable in C/UNIX programming. An example on how to use the pipe() function as an inter-process communication between two processes.
Views: 58695 ShellWave
Linux signals and core dumps - bin 0x1C
 
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Exploring exploit-exercises protostar final0 level, triggering a buffer overflow and analysing core dumps generated by a segfault signal. -=[ 🔴 Stuff I use ]=- → Microphone:* https://amzn.to/2LW6ldx → Graphics tablet:* https://amzn.to/2C8djYj → Camera#1 for streaming:* https://amzn.to/2SJ66VM → Lens for streaming:* https://amzn.to/2CdG31I → Connect Camera#1 to PC:* https://amzn.to/2VDRhWj → Camera#2 for electronics:* https://amzn.to/2LWxehv → Lens for macro shots:* https://amzn.to/2C5tXrw → Keyboard:* https://amzn.to/2LZgCFD → Headphones:* https://amzn.to/2M2KhxW -=[ ❤️ Support ]=- → per Video: https://www.patreon.com/join/liveoverflow → per Month: https://www.youtube.com/channel/UClcE-kVhqyiHCcjYwcpfj9w/join -=[ 🐕 Social ]=- → Twitter: https://twitter.com/LiveOverflow/ → Website: https://liveoverflow.com/ → Subreddit: https://www.reddit.com/r/LiveOverflow/ → Facebook: https://www.facebook.com/LiveOverflow/ -=[ 📄 P.S. ]=- All links with "*" are affiliate links. LiveOverflow / Security Flag GmbH is part of the Amazon Affiliate Partner Programm.
Views: 11728 LiveOverflow
Señales en Linux II: Uncaught Signals. Comportamiento por defecto
 
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Comportamiento del proceso al recibir unan señal para la que no se ha registrado un Signal Handler (señal no capturada). Cómo ignorar una señal cuya acción por defecto es "Term" para que mi proceso no termine al recibirla
Views: 274 WhileTrueThenDream
Mutex Synchronization in Linux with Pthreads
 
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Demo of using threads in Linux (pthreads) to run very simple processing in parallel. Uses a mutex (pthread_mutex) to synchronize the processing to avoid a race condition. Support videos via Patreon: https://www.patreon.com/DrBFraser Topics: - Timing the process without using threads (Linux time command) - Switching processing to new threads - Running multiple threads without a mutex lock (race condition) - Solving a race condition - Timing the multi-threaded version - Common problem when passing arguments to a thread - Common problem spotting race conditions Links: Create a single thread: http://youtu.be/ynCc-v0K-do Eclipse Setup: http://youtu.be/E36QpJdEghg Linux programming play-list: https://www.youtube.com/watch?v=E36QpJdEghg&list=PL-suslzEBiMrqFeagWE9MMWR9ZiYgWq89
Views: 70933 Brian Fraser
Autobinarysignals Parent Movie Reviews #Auto Binary Linux Signals Programming
 
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Quick, Easy and Profitable Trading? YES! TOP SECRET Formula! Click Here Now! http://tiny.cc/Profit-Autopilot Unique Scalping Technology that WINS! 170+ Pips Profit in only 3 trades on M5! Click Here Now! http://tiny.cc/170_Pips_Profit Hedge Fund Traders Are Some Of The Highest Paid People On Earth, And One Of The Best In The World Wants To Show You How To Consistently Double Your Account Every Month... With The Forex Gemini Code Doubling Your Account Monthy Is Easy! Click Here Now! http://tiny.cc/Forex_Gemini_Code
Views: 3 Steven
Linux System Programming Basics with Rust | Rust Munich Meetup
 
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This is a livestream of the Rust Munich Meetup. Markus Jais talks about the basics of Linux System Programming (processes, pipes, message queues, signals, etc). We will look at examples in C and then compare them with solutions in Rust and see how Rust makes Linux / Unix system programming easier and safer than coding in C. This is the respective event: http://www.meetup.com/rust-munich/events/224140986/
Views: 3299 codecentric AG
Процессы, сигналы, приоритеты в среде GNU Linux
 
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Подробное выполнение команд на тему процессов, сигналов, приоритетов на Linux Ubuntu. Видео предназначено для начинающих пользователей, все детально с объяснениями. ------------------------------- Как смотреть видео: • Желательно смотреть в 720p или 1080p качестве для четкого изображения. • Также можно скачать видео в HD качестве и смотреть через проигрыватель. Инструкция как скачать любое видео с Youtube: http://www.clck.ru/8qfrL ------------------------------- Soundtracks: • Первая: Angel Beats! - Ichiban na Takaramono (Piano version) • Вторая: Final Fantasy XIII-2 OST - Lightning Theme • Третья: Final Fantasy XIII - Eternal Love (Instrumental) - Sayuri Sugawara
Views: 431 AmaTeRaTSu1992
Synchronization 1: Semaphores
 
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This video presents the first of several synchronization tools: semaphores. Semaphores (specifically, counting semaphores) allow processes to send signals and request access to resources. When a resource is not available, the process waits until a signal is received.
Views: 31828 Jacob Schrum
#6 linux tutorial for beginners-Unix Process Concept-II
 
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linux tutorial for beginners 8 Unix Process Concept-II. To Learn or Teach Linux visit www.theskillpedia.com, A Marketplace for Learners and Trainers. For Corporate Training Requirements Visit My Website www.rnsangwan.com Slides Contents What is a process? A process is an executing program which has many components and properties Exec thread PID Priority Memory context Environment File descriptors Security credentials How Processes are created? Once process “forks” a child, pointing to the same pages of memory, and marking the area as read-only. Then the child “execs” the new command, causing a copy-on-write fault, thus copying to a new area of memory. A process can exec, without forking The child maintains the process ID of the parent. Process Ancestry init is the first process started at boot time –always has PID 1 Except init, every process has a parent. Processes can be both a parent and a child at the same time. pstree Shows the process ancestry for all process running on the system. Process States A process can be on of the many states: -R Runnable on the run queue Process in the run queue. It is waiting for it’s turn to run or it is executing. -S Sleeping Process is not executing, not it is ready to run. It is waiting for an event to occur or a signal to arrive to wake it up. -T stopped Process is not executing because it has been stopped. -D Uninterruptible sleep Process is sleeping and can not be woken up until an even occurs. It can be woken by a signal. Typically, the result of an I/O Operations. -Z Defunct Zombie process Just before a process dies, it sends a signal to it’s parent and waits for an acknowledgement before terminating. Even if the parent process does not immediately acknowledge the signal, all resources except for the process identity number are released. Zombie process are cleared from the system during the next system reboot and do not adversely affect system performance. Viewing process ps - Displays processes information Syntax: ps options Useful options: a Processes by all users x process from all terminal u show process owner w include command arguments f show process ancestry. The options described above are based on output conforming to the UNIX98 Standard. -l long listing. Includes more information such as the process owner’s UID. $ ps alx | grep ‘sshd’ $ pgrep sshd The above two command are identical Not Same Sending Signals to Processes
Views: 2808 TheSkillPedia
C Programming in Linux Tutorial #084 - poll() function
 
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C Programming in Linux Tutorial using GCC compiler. Tutorial should also be applicable in C/UNIX programming. An example on how to use the poll() function, an alternative to select() function, to create a timeout for the read() function. One of its uses is in TCP/IP socket communication where the server or client timeout when the other party does not send any data or acknowledgement. The example reads an input from the user, and times out if no user input for a period of time.
Views: 10806 ShellWave
Qt Tutorials For Beginners 5 - Qt Signal and slots
 
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Code for this video http://www.codebind.com/c-tutorial/qt-tutorials-for-beginners-qt-signal-and-slots/ In this video we will learn How Qt Signals and Slots Work. Understanding Signals and Slot in Qt is not very difficult. Signals and slots are the basic foundation of Qt C++ GUI Application. In this QT tutorial we will learn signal and slots tutorial fnctions work by creating an example application. How to create button click event and Connecting signals and slots by name at run time, signals/slots and namespaces -------------------Online Courses to learn---------------------------- Blockchain Course - http://bit.ly/2Mmzcv0 Big Data Hadoop Course - http://bit.ly/2MV97PL Java - https://bit.ly/2H6wqXk C++ - https://bit.ly/2q8VWl1 AngularJS - https://bit.ly/2qebsLu Python - https://bit.ly/2Eq0VSt C- https://bit.ly/2HfZ6L8 Android - https://bit.ly/2qaRSAS Linux - https://bit.ly/2IwOuqz AWS Certified Solutions Architect - https://bit.ly/2JrGoAF Modern React with Redux - https://bit.ly/2H6wDtA MySQL - https://bit.ly/2qcF63Z ----------------------Follow--------------------------------------------- My Website - http://www.codebind.com My Blog - https://goo.gl/Nd2pFn My Facebook Page - https://goo.gl/eLp2cQ Google+ - https://goo.gl/lvC5FX Twitter - https://twitter.com/ProgrammingKnow Pinterest - https://goo.gl/kCInUp Text Case Converter - https://goo.gl/pVpcwL -------------------------Stuff I use to make videos ------------------- Stuff I use to make videos Windows notebook – http://amzn.to/2zcXPyF Apple MacBook Pro – http://amzn.to/2BTJBZ7 Ubuntu notebook - https://amzn.to/2GE4giY Desktop - http://amzn.to/2zct252 Microphone – http://amzn.to/2zcYbW1 notebook mouse – http://amzn.to/2BVs4Q3 ------------------Facebook Links ---------------------------------------- http://fb.me/ProgrammingKnowledgeLearning/ http://fb.me/AndroidTutorialsForBeginners http://fb.me/Programmingknowledge http://fb.me/CppProgrammingLanguage http://fb.me/JavaTutorialsAndCode http://fb.me/SQLiteTutorial http://fb.me/UbuntuLinuxTutorials http://fb.me/EasyOnlineConverter
Views: 69839 ProgrammingKnowledge
SEMAPHORES | Operating System (Simplified)
 
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SEMAPHORES is a variable or abstract data type used to control access to a common resource by multiple processes in a concurrent system such as a multitasking operating system. Semaphore is simply a variable. This variable is used to solve critical section problems and to achieve process synchronization in the multi processing environment. (wikipedia) Links that may help: https://www.geeksforgeeks.org/semaphores-operating-system/ LIKE AND SUBSCRIBE! Microsoft Powerpoint x Filmora Photos/Icons and Audio used in the video is not mine! Thanks!
Views: 54383 Celine Flavier
Xlib Programming in C and Linux Tutorial #03 - Creating Push Button
 
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An example of using Xlib to create a simple push button. The button will have simple special effects where it seems that it is pressed down when clicked on it. The Xlib is an interface to the X Window System to communicate with the X server.
Views: 4829 ShellWave