输出文件相关属性

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <time.h>

void Get_Permission(mode_t mode)
{
	char per[]="rwx";
	for(int i=0;i<9;i++)
	{
		if((mode & (0400>>i))==0)
		{
			putchar('-');
			continue;
		}
		putchar(per[i%3]);
	}
}
int main(int argc, const char *argv[])
{
	struct stat buf;
	if(stat("./02_open.c",&buf)<0)
	{
		perror("stat");
		return -1;
	}
	printf("mode:0%o\n",buf.st_mode);
	Get_Permission(buf.st_mode);
	printf("nlink:%lu\n",buf.st_nlink);
	printf("uid:%d\n",buf.st_uid);
	printf("gid:%d\n",buf.st_gid);
	printf("size:%ld\n",buf.st_size);
	printf("time:%ld\n",buf.st_ctime);
	struct tm* info = localtime(&buf.st_ctime);
	if(NULL==info)
	{
		return -1;
	}
	printf("[%4d-%02d-%02d %02d:%02d:%02d]\n",\
			info->tm_year+1900,info->tm_mon+1,info->tm_mday,\
			info->tm_hour,info->tm_min,info->tm_sec);
	return 0;
}