#include <linux/unistd.h>#include <stdio.h>#include <errno.h>#define __NR_copy 259_syscall2(int,copy,char *,s,char *,d) //系統(tǒng)調(diào)用函數(shù)聲明main() { copy("/root/test.c","/root/tcopy.c");printf("~~~~~~~~~~~~~~~~~~~~");}