1 #include "apue.h"
2 #include <fcntl.h>
3
4
5 int main(int argc,char **argv)
6 {
7 if(argc != 2)
8 err_quit("usage:a.out <pathname>");
9 if(access(argv[1],R_OK) < 0)
10 err_ret("access error for %s",argv[1]);
11 else
12 printf("read access OK\n");
13 if(open(argv[1],O_RDONLY)<0)
14 err_ret("open error for %s\r\n",argv[1]);
15 else
16 printf("open for reading OK\r\n");
17
18 exit(0);
19
20
21 return 0;
22 }
23
