parent.c

基于linux的系统编程程序

/*parent.c*/
#include <sys/types.h>
#include <unistd.h>
#include <stdio.h>

int main(void)
{
	pid_t pid;
	const char *usr_envp[] = {"MYDEFINE=unknown","PATH=/home",NULL};//路径
	printf("Begin Fork()\n");
	pid = fork();
	switch(pid)
	{
	case -1:
		perror("fork failed!\n");
		break;
	case 0:
		/*准备执行子进程的程序*/
		if(execle("/home/child","myarg1","myarg2",(char *)0,usr_envp)) //路径/home/child,参数...
		perror("execle failed!\n");
		break;
	default:
		break;
	}
	//等待子进程退出
	if(waitpid(pid,NULL,0)<0)
		perror("waitpid failed!\n");
	printf("parent excting!");
	return 0;
}