Oct 31, 2009 · Once you understand the distinction between a program and a process, the behavior of fork() and exec() function can be summarized as: fork() creates a duplicate of the …

Nowadays, fork() doesn't copy the memory; it's simply set as "copy on write", so fork() + exec() is just as efficient as vfork() + exec(). clone() is the syscall used by fork(). with some parameters, …

More in general, the low-level fork/exec gives you additional control: before or in between the two operations, you might want to chdir, open pipes, close file descriptors, set up shared memory, …

Jul 25, 2013 · The fork () Method child_process.fork method is a special case of spawn () to create Node processes. It has the following signature − child_process.fork(modulePath[, …

Feb 23, 2011 · I understand the differences between fork, vfork, exec, execv, execp. So pls dont rant about it. My question is about the design of the unix process creation. Why did the …

Nov 8, 2009 · What is the difference between system and exec family commands? Especially I want to know which one of them creates child process to work?

Nov 20, 2008 · System also uses a fork / exec... combination. If you do fork / exec yourself you can execute parallel to your running process, while system is blocking (includes the wait). Also …

Dec 29, 2013 · Main Idea exec () family of functions replaces existing process image with a new process image. This is a marked difference from fork () system call where the parent and child …

In the following link, and in many others like it, exec is often described as: Differences between fork and exec The exec call is a way to basically replace the entire current process with a new p...

As the child writes to n after vfork() the process runs into undefined behaviour. Use fork() if modify any variables before exec*() ing.