Linux文件权限

#include <stdio.h>#include <stdlib.h>#include <sys/stat.h>int main(void){struct stat buf;if(stat("./test.txt", &buf) == -1){ /* 取得文件状态信息 */printf("stat error\n");exit(0);}if((buf.st_mode & S_IRGRP) != 0) /* 测试组用户是否对该文件有读权限 */printf("user of the group can read\n");elseprintf("user of the group can not read\n"); /* 输出提示信息 */return 0;}