:: =============================================================
:: Batch file to display Date and Time seprated by undescore.
:: =============================================================
:: Read the system date.
:: =============================================================
@SET MyDate=%DATE%
@SET MyDate=%MyDate:/=:%
@SET MyDate=%MyDate:-=:%
@SET MyDate=%MyDate: =:%
@SET MyDate=%MyDate:\=:%
@SET MyDate=%MyDate::=_%
:: =============================================================
:: Read the system time.
:: =============================================================
@SET MyTime=%TIME%
@SET MyTime=%MyTime: =0%
@SET MyTime=%MyTime:.=:%
@SET MyTime=%MyTime::=_%
:: =============================================================
:: Build the DateTime string.
:: =============================================================
@SET DateTime=%MyDate%_%MyTime%
:: =============================================================
:: Display the Date and Time as it is now.
:: =============================================================
@ECHO MyDate="%MyDate%" MyTime="%MyTime%" DateTime="%DateTime%"
:: =============================================================
:: Wait before close.
:: =============================================================
@PAUSE
:: =============================================================

如果你不需要这个格式:

2009_07_28__08_36_01

然后你可以使用以下3行代码，使用%date%和%time%:

set mydate=%date:/=%
set mytime=%time::=%
set mytimestamp=%mydate: =_%_%mytime:.=_%

注意:字符/和:被删除，字符。空格被下划线取代。

示例输出(摄于8/5/15星期三下午12:49，时间为50秒93毫秒):

echo %mytimestamp%
Wed_08052015_124950_93

如前所述，只有在您知道当前用户使用的格式(例如，MM/dd/yy或dd-MM-yyyy，仅举两个例子)时，解析日期和时间才有用。这是可以确定的，但是当您完成所有的强调和解析时，您仍然会遇到使用了意想不到的格式的情况，需要进行更多的调整。

您还可以使用一些外部程序，它们将以您喜欢的格式返回日期段，但这样做的缺点是需要将实用程序与脚本/批处理一起分发。

也有批处理技巧使用CMOS时钟在一个相当原始的方式，但这是太接近裸线对大多数人来说，也不总是首选的地方来检索日期/时间。

下面是避免上述问题的解决方案。是的，它引入了一些其他问题，但就我的目的而言，我发现这是在现代Windows系统的.bat文件中创建日期戳的最简单、最清晰、最可移植的解决方案。这只是一个示例，但我认为您将看到如何修改其他日期和/或时间格式等。

reg copy "HKCU\Control Panel\International" "HKCU\Control Panel\International-Temp" /f
reg add "HKCU\Control Panel\International" /v sShortDate /d "yyMMdd" /f
@REM reg query "HKCU\Control Panel\International" /v sShortDate
set LogDate=%date%
reg copy "HKCU\Control Panel\International-Temp" "HKCU\Control Panel\International" /f

为了在文件名中使用数字日期的一个非常简单的解决方案，请使用以下代码:

set month=%date:~4,2%
set day=%date:~7,2%
set curTimestamp=%month%%day%%year%

rem then the you can add a prefix and a file extension easily like this
echo updates%curTimestamp%.txt

我最终得到了这个脚本:

set hour=%time:~0,2%
if "%hour:~0,1%" == " " set hour=0%hour:~1,1%
echo hour=%hour%
set min=%time:~3,2%
if "%min:~0,1%" == " " set min=0%min:~1,1%
echo min=%min%
set secs=%time:~6,2%
if "%secs:~0,1%" == " " set secs=0%secs:~1,1%
echo secs=%secs%

set year=%date:~-4%
echo year=%year%

在WIN2008R2上，例如，我需要使您的'set month=%date:~3,2%'如下所示::否则，00表示month

set month=%date:~4,2%
if "%month:~0,1%" == " " set month=0%month:~1,1%
echo month=%month%
set day=%date:~0,2%
if "%day:~0,1%" == " " set day=0%day:~1,1%
echo day=%day%

set datetimef=%year%%month%%day%_%hour%%min%%secs%

echo datetimef=%datetimef%

下面是如何生成一个日志文件名(基于http://ss64.com/nt/syntax-getdate.html):)

@ECHO OFF
:: Check WMIC is available
WMIC.EXE Alias /? >NUL 2>&1 || GOTO s_error

:: Use WMIC to retrieve date and time
FOR /F "skip=1 tokens=1-6" %%G IN ('WMIC Path Win32_LocalTime Get Day^,Hour^,Minute^,Month^,Second^,Year /Format:table') DO (
   IF "%%~L"=="" goto s_done
      Set _yyyy=%%L
      Set _mm=00%%J
      Set _dd=00%%G
      Set _hour=00%%H
      SET _minute=00%%I
      SET _second=00%%K
)
:s_done

:: Pad digits with leading zeros
      Set _mm=%_mm:~-2%
      Set _dd=%_dd:~-2%
      Set _hour=%_hour:~-2%
      Set _minute=%_minute:~-2%
      Set _second=%_second:~-2%

Set logtimestamp=%_yyyy%-%_mm%-%_dd%_%_hour%_%_minute%_%_second%
goto make_dump

:s_error
echo WMIC is not available, using default log filename
Set logtimestamp=_

:make_dump
set FILENAME=database_dump_%logtimestamp%.sql
...