Internally fork call
What do fork()call internally?
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Linux implements fork() via the clone() system call. In turn, The clone () system call calls do_fork(). In forking the bulk of the work is handled by do_fork(), which is described in kernel/fork.c. This function calls copy_process() and then begin the process running. If copy_process() returns successfully, the new child is woken up & run. Deliberately, the kernel runs the child process primary.
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Difference between program & operating system process: The process may be called the active state of a program. It also gives the status of given task mentioned in that particular program, it provides the info
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