systest3.c

该代码为unix环境高级编程的源代码

#include	"ourhdr.h"

int
main(int argc, char *argv[])
{
	int		status;

	if (argc < 2)
		err_quit("command-line argument required");

	if ( (status = system(argv[1])) < 0)
		err_sys("system() error");
	pr_exit(status);

	exit(0);
}