1 #include "apue.h"
2
3
4 int main(int argc,char *argv[])
5 {
6 struct stat stabuf;
7
8 if(stat("zbzhuang",&stabuf) < 0)
9 err_sys("stat error for foo");
10 if(chmod("zbzhuang",(stabuf.st_mode & ~S_IXGRP)|S_ISGID) < 0)
11 err_sys("chmod error for foo");
12
13 if(chmod("caylin",S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH) < 0)
14 err_sys("chmod error for bar");
15
16 return 0;
17
