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82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/************************************************************************
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*
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* Purpose: Program to demonstrate the 'stat' function.
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* The program will show the modification and access times
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* plus the size of a file.
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*
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* Author: M J Leslie
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*
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* Date: 01-Jun-95 MJL Minor bug fixed.
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* 13-Apr-95 MJL Inital Release
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*
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* Notes: This function is only available to Unix systems. If you
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* are on a DOS machine, this will not compile.
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*
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* Compile: Change the #define (below) to a suitable file name on your
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* system. The file name is not passed on the command line
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* as I did not want to complicate the example.
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*
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************************************************************************/
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#include <stdio.h> /* printf */
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#include <sys/stat.h> /* declare the 'stat' structure */
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#include <sys/types.h>
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#include <time.h>
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#include <unistd.h>
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#include<stdlib.h>
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#define FILENAME "README.md" /* PUT YOUR FILE NAME HERE */
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/************************************************************************/
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char *format_time(time_t cal_time);
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void file_stat(char *filename);
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/************************************************************************/
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int main() { file_stat(FILENAME); }
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/************************************************************************/
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void file_stat(char *filename) {
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struct stat stat_p; /* 'stat_p' is a pointer to a structure
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* of type 'stat'. */
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/* Get stats for file and place them in
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* the structure. */
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if (-1 == lstat(filename, &stat_p)) {
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printf(" Error occoured attempting to stat %s\n", filename);
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exit(0);
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}
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/* Print a few structure members. */
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printf("Stats for %s \n", filename);
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printf("Modify time is %s", format_time(stat_p.st_mtime));
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/* Access time does not get updated
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if the filesystem is NFS mounted! */
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printf("Access time is %s", format_time(stat_p.st_atime));
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printf("File size is %ld bytes\n", stat_p.st_size);
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}
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/************************************************************************/
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char *format_time(time_t cal_time) {
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struct tm *time_struct;
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static char string[30];
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/* Put the calendar time into a structure
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* if type 'tm'. */
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time_struct = localtime(&cal_time);
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/* Build a formatted date from the
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* structure. */
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strftime(string, sizeof string, "%h %e %H:%M\n", time_struct);
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/* Return the date/time */
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return (string);
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}
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