Get last modified date and time

[Babkockdood]

Hello, everyone. I was wondering how to get the date and time for when a file was last modified. I am not writing for a PC, but I have some Unix libraries available. I would just like to get the date and time in MM/DD/YYYY HH:MM .

Also, it would be great if I could store the results in integers.

[anduril462]

If you have Unix libraries available, look into the stat() function if you have it. It will return details of the file, including the st_mtime field, which is the last modified time. It's stored as a time_t, which should be seconds since the Unix epoch, so you can use various functions from time.h to get your MM/DD/YYYY and HH:MM.

Of course, the availability of such data regardless of library function is dependent on the underlying file system.

[Babkockdood]

Alright, I found an example and was able to get MM/DD/YYYY and HH:MM.

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

struct tm *foo;
struct stat attrib;

int main() {
	stat("file.txt", &attrib);
	foo = gmtime(&(attrib.st_mtime));
	printf("Year: %d\n", foo->tm_year);
	printf("Month: %d\n", foo->tm_mon);
	printf("Day: %d\n", foo->tm_mday);
	printf("Hour: %d\n", foo->tm_hour);
	printf("Minute: %d\n", foo->tm_min);
	return 0;
}

Thanks, anduril. I have yet to test this on my platform yet, but it should work.