linux 打印时间 毫秒

date +%Y-%m-%d\ %H:%M:%S.%3N

printf "Current time: $(date +%Y-%m-%d\ %H:%M:%S.%3N)\n"

import datetime

now = datetime.datetime.now()
print(f"Current time: {now.strftime('%Y-%m-%d %H:%M:%S.%f')[:-3]}")

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

int main() {
    struct timespec ts;
    clock_gettime(CLOCK_REALTIME, &ts);
    printf("Current time: %ld-%02d-%02d %02d:%02d:%02d.%03ld\n",
           ts.tv_sec / 31536000 + 1970, (ts.tv_sec / 86400) % 365, (ts.tv_sec / 3600) % 24,
           (ts.tv_sec / 60) % 60, ts.tv_sec % 60, ts.tv_nsec / 1000000);
    return 0;
}