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c - How does fork () work? - Stack Overflow 35 fork() duplicates the process, so after calling fork there are actually 2 instances of your program running How do you know which process is the original (parent) one, and which is the new (child) one? In the parent process, the PID of the child process (which will be a positive integer) is returned from fork()
c - What exactly does fork return? - Stack Overflow Fork creates a duplicate process and a new process context When it returns a 0 value it means that a child process is running, but when it returns another value that means a parent process is running
What does it mean to fork on GitHub? - Stack Overflow A fork is a copy of a project folder (repository) into your github account or onto your desktop if you use Github on your Desktop This allows you to freely experiment with changes without affecting the original project
c - Differences between fork and exec - Stack Overflow The use of fork and exec exemplifies the spirit of UNIX in that it provides a very simple way to start new tasks Note the use of the word task here, I have deliberately avoided using the terms process or program, which you can define as: a process is an "engine of execution", something within the operating system which is capable of running a program; and a program is a specific piece of code
linux - Why fork () works the way it does - Stack Overflow Almost all description of what fork does, say it just copies the process and the new process starts running after the fork() call This is indeed what happens but why does it happen this way and why is fork execve the only way to spawn new processes and what is the most general unix way of creating a new process from your current one?
What is the difference between fork () and vfork ()? This topic gives a good description of fork, vfork, clone and exec Below are some often overlooked differences between fork and vfork I experienced on some Linux 2 6 3x embedded systems I worked with Even with copy-on-write techniques, fork fails if you don't have enough memory to duplicate the memory used by the parent process