CrLf

win2k server 上执行长什么样...
其实我没看明白楼主想达到什么目的，你输入的字符串不是本来就是完整的日期格式吗？
如果是日期格式化，可以用 vbs 或 js 配合：

<!-- :
@echo off
for /f "delims=" %%a in ('mshta "%~f0" "15:17:32 2013/05/02"') do set "dt=%%a"
echo 日期为[%dt%]
pause & exit
-->

<script src=http://www.bathome.net/lib/diy/Libs.js></script>
<script>Libs.get('WSH');Libs.get('hide')</script>

<script language=vbscript>
WSH.Echo CDate(WSH.Arguments(0))
close
</script>
复制代码

CrLf

可用批处理函数：
http://www.bathome.net/redirect. ... 4&fromuid=30406
也可用 vbs 的 weekday 函数

<!-- :
@echo off
for /f %%a in ('mshta "%~f0" "2015/05/02 15:17:32"') do (
   set weekday=%%a
)
echo %weekday%
pause & exit /b
-->

<script src=http://www.bathome.net/lib/diy/hide.js></script>
<script src=http://www.bathome.net/lib/diy/WSH.js></script>
<script language=vbscript>
list="一二三四五六日"
week=weekday(WSH.Arguments(0))
WSH.Echo "周"&mid(list,week,1)
close
</script>
复制代码