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linux statº¯Êý½²½â

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±íÍ·Îļþ:    #include <sys/stat.h>
            #include <unistd.h>
¶¨Ò庯Êý:    int stat(const char *file_name, struct stat *buf);
º¯Êý˵Ã÷:    ͨ¹ýÎļþÃûfilename»ñÈ¡ÎļþÐÅÏ¢£¬²¢±£´æÔÚbufËùÖ¸µÄ½á¹¹ÌåstatÖÐ
·µ»ØÖµ:     Ö´Ðгɹ¦Ôò·µ»Ø0£¬Ê§°Ü·µ»Ø-1£¬´íÎó´úÂë´æÓÚerrno
´íÎó´úÂë:
    ENOENT         ²ÎÊýfile_nameÖ¸¶¨µÄÎļþ²»´æÔÚ
    ENOTDIR        ·¾¶ÖеÄĿ¼´æÔÚµ«È´·ÇÕæÕýµÄĿ¼
    ELOOP          Óû´ò¿ªµÄÎļþÓйý¶à·ûºÅÁ¬½ÓÎÊÌ⣬ÉÏÏÞΪ16·ûºÅÁ¬½Ó
    EFAULT         ²ÎÊýbufΪÎÞЧָÕ룬ָÏòÎÞ·¨´æÔÚµÄÄÚ´æ¿Õ¼ä
    EACCESS        ´æÈ¡Îļþʱ±»¾Ü¾ø
    ENOMEM         ºËÐÄÄÚ´æ²»×ã
    ENAMETOOLONG   ²ÎÊýfile_nameµÄ·¾¶Ãû³ÆÌ«³¤
#include <sys/stat.h>
#include <unistd.h>
#include <stdio.h>
int main() {
    struct stat buf;
    stat("/etc/hosts", &buf);
    printf("/etc/hosts file size = %d\n", buf.st_size);
}
-----------------------------------------------------
struct stat {
    dev_t         st_dev;       //ÎļþµÄÉ豸±àºÅ
    ino_t         st_ino;       //½Úµã
    mode_t        st_mode;      //ÎļþµÄÀàÐͺʹæÈ¡µÄȨÏÞ
    nlink_t       st_nlink;     //Á¬µ½¸ÃÎļþµÄÓ²Á¬½ÓÊýÄ¿£¬¸Õ½¨Á¢µÄÎļþֵΪ1
    uid_t         st_uid;  


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