This code prints the local time in Linux with a C program.

localtime_linux.c

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <stdint.h>

int main()
{
    time_t currentTime = time(NULL);
    struct tm* localTime = localtime(&currentTime);
    char dateStr[100];
    sprintf(dateStr, "%s/%04d_%02d_%02d_%02d_%02d_%02d.h264",
            "Date is: ",
            localTime->tm_year + 1900,
            localTime->tm_mon + 1,
            localTime->tm_mday,
            localTime->tm_hour,
            localTime->tm_min,
            localTime->tm_sec
           );

    printf("%s\n", dateStr);
}