/my_fork.c

## my_fork.c
// my_fork.c
#include <unistd.h>
#include <stdio.h>

int main()
{
   fork();
   printf("pid=%d, ppid=%d\n",getpid(), getppid());

   getchar();

   return 0;
}

## test1.sh
./my_fork &

## test2.sh
./my_fork
	// my_fork.c
	#include <unistd.h>
	#include <stdio.h>

	int main()
	{
	fork();
	printf("pid=%d, ppid=%d\n",getpid(), getppid());

	getchar();

	return 0;
	}
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