Windows命令“date +%s”的等价物是什么

时间:2012-06-20 17:04:39

标签: windows bash command-line batch-file unix-timestamp

我正在编写一个批处理脚本,我需要unix时间。在linux下很容易,但我无法弄清楚如何在windows中执行此操作。

3 个答案:

答案 0 :(得分:11)

这是一个本地批量解决方案,应该适用于任何语言环境。它使用WMIC以与语言环境无关的方式获取当前本地时间。其他一切都是字符串解析和基本数学的“简单”问题。

:UnixTime  [ReturnVar]  [TimeStamp]
::
:: Computes the Unix time from the current local time as reported by the
:: operating system. The Unix time is the number of seconds that have elapsed
:: since midnight Coordinated Universal Time (UTC), January 1, 1970, not
:: counting leap seconds.
::
:: The result is returned in variable ReturnVar,
:: or the result is echoed if ReturnVar is not specified
::
:: If the TimeStamp is provided in the 2nd parameter, then the Unix time for
:: the TimeStamp is computed, rather then for the current time.
::
:: The TimeStamp must have the same format as used by WMIC:
::
::   YYYYMMDDhhmmss.ffffffSzzz
::
:: where:
::
::   YYYY   = gregorian year
::   MM     = month
::   DD     = day
::   hh     = hour in 24 hour format
::   mm     = minute
::   ss     = seconds
::   ffffff = fractional seconds (microseconds)
::   S      = timezone sign: + or -
::   zzz    = timezone: minutes difference from GMT
::
:: Each component must be zero prefixed as needed to maintain the proper width.
::
:: The ReturnVar parameter must be provided in order to use the TimeStamp.
:: A ReturnVar of "" will function the same as no ReturnVar. This enables the
:: specification of a TimeStamp without an actual ReturnVar.
::
@echo off
setlocal
set "ts=%~2"
if not defined ts for /f "skip=1 delims=" %%A in ('wmic os get localdatetime') do if not defined ts set "ts=%%A"
set /a "yy=10000%ts:~0,4% %% 10000, mm=100%ts:~4,2% %% 100, dd=100%ts:~6,2% %% 100"
set /a "dd=dd-2472663+1461*(yy+4800+(mm-14)/12)/4+367*(mm-2-(mm-14)/12*12)/12-3*((yy+4900+(mm-14)/12)/100)/4"
set /a ss=(((1%ts:~8,2%*60)+1%ts:~10,2%)*60)+1%ts:~12,2%-366100-%ts:~21,1%((1%ts:~22,3%*60)-60000)
set /a ss+=dd*86400
endlocal & if "%~1" neq "" (set %~1=%ss%) else echo %ss%
exit /b


请注意,此解决方案的使用寿命有限。当Unix时间超过有符号32位整数的最大值时,它将在2038-01-19停止工作。

编辑 - 已编辑代码以支持在命令行上转换时间戳字符串,而不是当前本地时间。支持的精确时间范围是1901-12-13 20:45:52.000000到2038-01-19 03:14:07.999999 GMT。 1970-01-01 00:00:00.000000之前的时间将产生负值。

答案 1 :(得分:3)

如果“unix time”是指epoch second,那么Windows不包含生成该工具的工具。相反,您可以安装第三方工具。例如:

  • 安装Cygwin
  • 找到date二进制文件(在C:\Cygwin\下或安装它的任何位置)
  • 像在Linux中一样使用它。

或者,根据对此答案的精彩评论,您可以安装GNU Coreutils,其中还包含date命令。它包括许多您可能不需要的其他工具,但Cygwin也是如此。

答案 2 :(得分:3)

您可以在Windows中使用vbscript,您的系统上可以使用解释器。

'--------------------epoch.vbs----------------------- 
option explicit
dim s,o,z
for each o in GetObject("winmgmts:").InstancesOf ("Win32_OperatingSystem")
z=o.CurrentTimeZone
next
s=DateDiff("s", "01/01/1970 00:00:00", Now())-(60*z)
wscript.echo(s)
wscript.quit