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Rob Raymond's questions

Martin Hope
Rob Raymond
Asked: 2021-01-25 14:11:01 +0800 CST
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Ubuntu 20.04 在带有 MacOS 主机的 VirtualBox 中运行

使用python而不是 shell 脚本。对于linux在子进程中运行的命令。日期已更新，但在日期/时间自动重置后不久。已禁用 NTP。如何防止日期被重置回实际日期？

import re, shutil, csv, subprocess, yaml, click
from pathlib import Path

def cmd(cmd:str="ls -al", assertfail=True) :
    up = subprocess.Popen(cmd, shell=True, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, close_fds=True)
    str = [o.rstrip().decode() for o in up.stdout]
    exitcode = up.wait()
    if assertfail: assert exitcode == 0, f"[{exitcode}] {cmd} {str}"
    return exitcode,  str

if __name__ == '__main__':
    # set date back before flash EOL date
    import datetime as dt
    n = dt.datetime.now()
    if n.year > 2020:
        systime = dt.datetime(n.year-1, n.month, n.day, n.hour, n.minute, n.second, n.microsecond).isoformat(sep=' ', timespec='milliseconds')
        cmd("sudo timedatectl set-ntp off")
        cmd(f"sudo date --set=\"{systime}\"")
        # cmd("sudo hwclock --systohc")
        cmd(f"sudo timedatectl set-time \"{systime}\"")
        e, out = cmd("sudo timedatectl status")
        print("\n".join(out))
        e, out = cmd("date")
        print(f"updated time {dt.datetime.now()} {out[0]}")

输出

               Local time: Fri 2020-01-24 21:55:05 UTC
           Universal time: Fri 2020-01-24 21:55:05 UTC
                 RTC time: Fri 2020-01-24 21:55:05
                Time zone: Etc/UTC (UTC, +0000)
System clock synchronized: no
              NTP service: inactive
          RTC in local TZ: no
updated time 2020-01-24 21:55:05.980812 Fri 24 Jan 2020 09:55:05 PM UTC
date