blocks|key|1536076|text|请参考此http://technet.microsoft.com/en-us/library/bb490982.aspx，其中解释了您可以对命令输出执行的操作。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1536077|entityMap|0|LINK|mutability|MUTABLE|url|http://technet.microsoft.com/en-us/library/bb490982.aspx^0|4|1K|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Please refer to this <a href="http://technet.microsoft.com/en-us/library/bb490982.aspx" rel="nofollow noreferrer">http://technet.microsoft.com/en-us/library/bb490982.aspx</a> which explains what you can do with command output.

blocks|key|1751072|text|在"V“环境变量中设置最新文件的示例|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1751073|FOR+/F+%25I+IN+('DIR+*.*+/O:D+/B')+DO+SET+V=%25I|code-block|syntax|javascript|1751074|在批处理文件中，您必须在循环变量中使用双前缀：|1751075|FOR+/F+%25%25I+IN+('DIR+*.*+/O:D+/B')+DO+SET+V=%25%25I|1751076|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Example to set in the "V" environment variable the most recent file 

<pre><code>FOR /F %I IN ('DIR *.* /O:D /B') DO SET V=%I
</code></pre>

in a batch file you have to use double prefix in the loop variable:

<pre><code>FOR /F %%I IN ('DIR *.* /O:D /B') DO SET V=%%I
</code></pre>

blocks|key|1751127|text|要获取当前目录，可以使用以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1751128|CD+>+tmpFile
SET+/p+myvar=+<+tmpFile
DEL+tmpFile
echo+test:+%25myvar%25|code-block|syntax|javascript|1751129|虽然它使用的是临时文件，所以它不是最漂亮的，但它确实可以工作！‘'CD’将当前目录放在'+tmpFile‘中，'SET’加载tmpFile的内容。|1751130|以下是使用“array‘s”的多行问题的解决方案：|1751131|@echo+off

rem+---------
rem+Obtain+line+numbers+from+the+file
rem+---------

rem+This+is+the+file+that+is+being+read:+You+can+replace+this+with+%251+for+dynamic+behaviour+or+replace+it+with+some+command+like+the+first+example+i+gave+with+the+'CD'+command.
set+_readfile=test.txt

for+/f+"usebackq+tokens=2+delims=:"+%25%25a+in+(`find+/c+/v+""+%25_readfile%25`)+do+set+_max=%25%25a
set+/a+_max%2B=1
set+_i=0
set+_filename=temp.dat

rem+---------
rem+Make+the+list
rem+---------

:makeList
find+/n+/v+""+%25_readfile%25+>%25_filename%25

rem+---------
rem+Read+the+list
rem+---------

:readList
if+%25_i%25==%25_max%25+goto+printList

rem+---------
rem+Read+the+lines+into+the+array
rem+---------
for+/f+"usebackq+delims=]+tokens=2"+%25%25a+in+(`findstr+/r+"\[%25_i%25]"+%25_filename%25`)+do+set+_data%25_i%25=%25%25a
set+/a+_i%2B=1
goto+readList

:printList
del+%25_filename%25
set+_i=1
:printMore
if+%25_i%25==%25_max%25+goto+finished
set+_data%25_i%25
set+/a+_i%2B=1
goto+printMore

:finished|1751132|但是您可能想要考虑转移到另一个更强大的shell，或者为这个东西创建一个应用程序。它大大扩展了批处理文件的可能性。|1751133|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

To get the current directory, you can use this:

<pre><code>CD &gt; tmpFile
SET /p myvar= &lt; tmpFile
DEL tmpFile
echo test: %myvar%
</code></pre>

It's using a temp-file though, so it's not the most pretty, but it certainly works! 'CD' puts the current directory in 'tmpFile', 'SET' loads the content of tmpFile.

Here is a solution for multiple lines with "array's":

<pre><code>@echo off

rem ---------
rem Obtain line numbers from the file
rem ---------

rem This is the file that is being read: You can replace this with %1 for dynamic behaviour or replace it with some command like the first example i gave with the 'CD' command.
set _readfile=test.txt

for /f "usebackq tokens=2 delims=:" %%a in (`find /c /v "" %_readfile%`) do set _max=%%a
set /a _max+=1
set _i=0
set _filename=temp.dat

rem ---------
rem Make the list
rem ---------

:makeList
find /n /v "" %_readfile% &gt;%_filename%

rem ---------
rem Read the list
rem ---------

:readList
if %_i%==%_max% goto printList

rem ---------
rem Read the lines into the array
rem ---------
for /f "usebackq delims=] tokens=2" %%a in (`findstr /r "\[%_i%]" %_filename%`) do set _data%_i%=%%a
set /a _i+=1
goto readList

:printList
del %_filename%
set _i=1
:printMore
if %_i%==%_max% goto finished
set _data%_i%
set /a _i+=1
goto printMore

:finished
</code></pre>

But you might want to consider moving to another more powerful shell or create an application for this stuff. It's stretching the possibilities of the batch files quite a bit.

blocks|key|1751214|text|如果您必须捕获所有命令输出，则可以使用如下批处理：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1751215|@ECHO+OFF
IF+NOT+"%251"==""+GOTO+ADDV
SET+VAR=
FOR+/F+%25%25I+IN+('DIR+*.TXT+/B+/O:D')+DO+CALL+%250+%25%25I
SET+VAR
GOTO+END

:ADDV
SET+VAR=%25VAR%25!%251

:END|code-block|syntax|javascript|1751216|所有输出行都存储在VAR中，用"!“分隔。|1751217|但是，如果只需要一行控制台输出，请尝试：|1751218|@ECHO+off
@SET+MY_VAR=
FOR+/F+%25%25I+IN+('npm+prefix')+DO+@SET+"MY_VAR=%25%25I"

@REM+Do+something+with+MY_VAR+variable...|1751219|@John:这个有什么实际用途吗？我认为你应该看看PowerShell或任何其他能够轻松执行脚本任务的编程语言(Python.perl.php.ruby)|1751220|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

If you have to capture all the command output you can use a batch like this:
<pre><code>@ECHO OFF
IF NOT &quot;%1&quot;==&quot;&quot; GOTO ADDV
SET VAR=
FOR /F %%I IN ('DIR *.TXT /B /O:D') DO CALL %0 %%I
SET VAR
GOTO END

:ADDV
SET VAR=%VAR%!%1

:END
</code></pre>
All output lines are stored in VAR separated with &quot;!&quot;.
But if only a single-line console-output is expected, try:
<pre><code>@ECHO off
@SET MY_VAR=
FOR /F %%I IN ('npm prefix') DO @SET &quot;MY_VAR=%%I&quot;

@REM Do something with MY_VAR variable...
</code></pre>
@John: is there any practical use for this? I think you should watch PowerShell or any other programming language capable to perform scripting tasks easily (Python, Perl, PHP, Ruby)

blocks|key|1751294|text|您可以在一个变量中捕获所有输出，但各行将由您选择的字符(以下示例中的#)分隔，而不是实际的CR-LF。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1751295|@echo+off
setlocal+EnableDelayedExpansion
for+/f+"delims="+%25%25i+in+('dir+/b')+do+(
++++if+"!DIR!"==""+(set+DIR=%25%25i)+else+(set+DIR=!DIR!#%25%25i)
)
echo+directory+contains:
echo+%25DIR%25|code-block|syntax|javascript|1751296|第二个版本，如果您需要逐行打印内容。这利用了这样一个事实，即"dir+/b“不会有重复的输出行，因此它在一般情况下可能不起作用。|1751297|@echo+off
setlocal+EnableDelayedExpansion
set+count=0
for+/f+"delims="+%25%25i+in+('dir+/b')+do+(
++++if+"!DIR!"==""+(set+DIR=%25%25i)+else+(set+DIR=!DIR!#%25%25i)
++++set+/a+count+=+!count!+%2B+1
)

echo+directory+contains:
echo+%25DIR%25

for+/l+%25%25c+in+(1,1,%25count%25)+do+(
++++for+/f+"delims=#"+%25%25i+in+("!DIR!")+do+(
++++++++echo+%25%25i
++++++++set+DIR=!DIR:%25%25i=!
++++)
)|1751298|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

You can capture all output in one variable, but the lines will be separated by a character of your choice (# in the example below) instead of an actual CR-LF.

<pre><code>@echo off
setlocal EnableDelayedExpansion
for /f "delims=" %%i in ('dir /b') do (
 if "!DIR!"=="" (set DIR=%%i) else (set DIR=!DIR!#%%i)
)
echo directory contains:
echo %DIR%
</code></pre>

Second version, if you need to print the contents out line-by-line. This takes advanted of the fact that there won't be duplicate lines of output from "dir /b", so it may not work in the general case.

<pre><code>@echo off
setlocal EnableDelayedExpansion
set count=0
for /f "delims=" %%i in ('dir /b') do (
 if "!DIR!"=="" (set DIR=%%i) else (set DIR=!DIR!#%%i)
 set /a count = !count! + 1
)

echo directory contains:
echo %DIR%

for /l %%c in (1,1,%count%) do (
 for /f "delims=#" %%i in ("!DIR!") do (
 echo %%i
 set DIR=!DIR:%%i=!
 )
)
</code></pre>

blocks|key|1536360|text|@echo+off

ver+%7C+find+"6.1."+>+nul
if+%25ERRORLEVEL%25+==+0+(
echo+Win7
for+/f+"delims="+%25%25a+in+('DIR+"C:\Program+Files\Microsoft+Office\*Outlook.EXE"+/B+/P+/S')+do+call+set+findoutlook=%25%25a
%25findoutlook%25
)

ver+%7C+find+"5.1."+>+nul
if+%25ERRORLEVEL%25+==+0+(
echo+WinXP
for+/f+"delims="+%25%25a+in+('DIR+"C:\Program+Files\Microsoft+Office\*Outlook.EXE"+/B+/P+/S')+do+call+set+findoutlook=%25%25a
%25findoutlook%25
)
echo+Outlook+dir:++%25findoutlook%25
"%25findoutlook%25"|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1536361|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>@echo off

ver | find "6.1." &gt; nul
if %ERRORLEVEL% == 0 (
echo Win7
for /f "delims=" %%a in ('DIR "C:\Program Files\Microsoft Office\*Outlook.EXE" /B /P /S') do call set findoutlook=%%a
%findoutlook%
)

ver | find "5.1." &gt; nul
if %ERRORLEVEL% == 0 (
echo WinXP
for /f "delims=" %%a in ('DIR "C:\Program Files\Microsoft Office\*Outlook.EXE" /B /P /S') do call set findoutlook=%%a
%findoutlook%
)
echo Outlook dir: %findoutlook%
"%findoutlook%"
</code></pre>

blocks|key|1536385|text|只需使用FOR命令的结果。例如(在批处理文件中)：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1536386|for+/F+"delims="+%25%25I+in+('dir+/b+/a-d+/od+FILESA*')+do+(echo+%25%25I)|code-block|syntax|javascript|1536387|您可以使用%25%25I作为所需的值。就像这样：%25%25I。|1536388|而且预先%25%25I没有任何空格或CR字符，可以用于比较！！|1536389|entityMap^0|4|3|0|0|5|3|K|3|0|4|3|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|U|8|@$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|M|3|N|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|O|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|P|$]]

Just use the result from the <code>FOR</code> command. For example (inside a batch file):

<pre><code>for /F "delims=" %%I in ('dir /b /a-d /od FILESA*') do (echo %%I)
</code></pre>

You can use the <code>%%I</code> as the value you want. Just like this: <code>%%I</code>.

And in advance the <code>%%I</code> does not have any spaces or CR characters and can be used for comparisons!!

blocks|key|1751412|text|我想对上述解决方案补充一句话：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1751413|如果您的命令位于PATH中，或者如果命令是不带空格或特殊字符的cmdpath，则所有这些语法都能很好地工作。|1751414|但是，如果您尝试使用位于路径包含特殊字符的文件夹中的可执行命令，则需要将命令路径括在双引号(")中，然后FOR+/F语法将不起作用。|1751415|示例：|1751416|$+for+/f+"tokens=*+USEBACKQ"+%25f+in+(
++++`""F:\GLW7\Distrib\System\Shells+and+scripting\f2ko.de\folderbrowse.exe""+Hello+'"F:\GLW7\Distrib\System\Shells+and+scripting"'`
)+do+echo+%25f
The+filename,+directory+name,+or+volume+label+syntax+is+incorrect.|code-block|syntax|javascript|1751417|或|1751418|$+for+/f+"tokens=*+USEBACKQ"+%25f+in+(
++++++`"F:\GLW7\Distrib\System\Shells+and+scripting\f2ko.de\folderbrowse.exe"+"Hello+World"+"F:\GLW7\Distrib\System\Shells+and+scripting"`
)+do+echo+%25f
'F:\GLW7\Distrib\System\Shells'+is+not+recognized+as+an+internal+or+external+command,+operable+program+or+batch+file.|1751419|1751420|`$+for+/f+"tokens=*+USEBACKQ"+%25f+in+(
+++++`""F:\GLW7\Distrib\System\Shells+and+scripting\f2ko.de\folderbrowse.exe""+"Hello+World"+"F:\GLW7\Distrib\System\Shells+and+scripting"`
)+do+echo+%25f
'"F:\GLW7\Distrib\System\Shells+and+scripting\f2ko.de\folderbrowse.exe""+"Hello'+is+not+recognized+as+an+internal+or+external+command,+operable+program+or+batch+file.|1751421|在这种情况下，我发现使用命令并将其结果存储在变量中的唯一解决方案是(临时)将默认目录设置为命令本身之一：|1751422|pushd+"%25~d0%25~p0"
FOR+/F+"tokens=*+USEBACKQ"+%25%25F+IN+(
++++`FOLDERBROWSE+"Hello+world!"+"F:\GLW7\Distrib\System\Layouts+(print,display...)"`
)+DO+(SET+MyFolder=%25%25F)
popd
echo+My+selected+folder:+%25MyFolder%25|1751423|然后结果是正确的：|1751424|My+selected+folder:+F:\GLW7\Distrib\System\OS+install,+recovery,+VM\
Press+any+key+to+continue+.+.+.|1751425|当然，在上面的例子中，我假设我的批处理脚本与我的可执行命令位于同一个文件夹中，这样我就可以使用"%25~d0%25~p0“语法。如果这不是您的情况，那么您必须找到一种方法来定位命令路径，并将默认目录更改为其路径。|1751426|注意:对于那些想知道的人来说，这里使用的示例命令(用于选择文件夹)是FOLDERBROWSE.EXE。我在网站f2ko.de+(http://f2ko.de/en/cmd.php)上找到了它。|offset|length|1751427|如果有人有更好的解决方案，可以通过复杂的路径访问这类命令，我将非常高兴听到它。|1751428|吉尔斯|1751429|entityMap|0|LINK|mutability|MUTABLE|url|http://f2ko.de/en/cmd.php^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|1S|P|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|1L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|1M|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|1N|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|1O|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|1P|8|@]|9|@]|A|$K|L]]|$1|Q|3|N|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|R|3|S|5|J|7|1R|8|@]|9|@]|A|$K|L]]|$1|T|3|U|5|6|7|1S|8|@]|9|@]|A|$]]|$1|V|3|W|5|J|7|1T|8|@]|9|@]|A|$K|L]]|$1|X|3|Y|5|6|7|1U|8|@]|9|@]|A|$]]|$1|Z|3|10|5|J|7|1V|8|@]|9|@]|A|$K|L]]|$1|11|3|12|5|6|7|1W|8|@]|9|@]|A|$]]|$1|13|3|14|5|6|7|1X|8|@]|9|@$15|1Y|16|1Z|1|20]]|A|$]]|$1|17|3|18|5|6|7|21|8|@]|9|@]|A|$]]|$1|19|3|1A|5|6|7|22|8|@]|9|@]|A|$]]|$1|1B|3|-4|5|6|7|23|8|@]|9|@]|A|$]]]|1C|$1D|$5|1E|1F|1G|A|$1H|1I]]]]

I would like to add a remark to the above solutions:

All these syntaxes work perfectly well IF YOUR COMMAND IS FOUND WITHIN THE PATH or IF THE COMMAND IS A cmdpath WITHOUT SPACES OR SPECIAL CHARACTERS.

But if you try to use an executable command located in a folder which path contains special characters then you would need to enclose your command path into double quotes (") and then the FOR /F syntax does not work.

Examples:

<pre><code>$ for /f "tokens=* USEBACKQ" %f in (
 `""F:\GLW7\Distrib\System\Shells and scripting\f2ko.de\folderbrowse.exe"" Hello '"F:\GLW7\Distrib\System\Shells and scripting"'`
) do echo %f
The filename, directory name, or volume label syntax is incorrect.
</code></pre>

or 

<pre><code>$ for /f "tokens=* USEBACKQ" %f in (
 `"F:\GLW7\Distrib\System\Shells and scripting\f2ko.de\folderbrowse.exe" "Hello World" "F:\GLW7\Distrib\System\Shells and scripting"`
) do echo %f
'F:\GLW7\Distrib\System\Shells' is not recognized as an internal or external command, operable program or batch file.
</code></pre>

or 

<pre><code>`$ for /f "tokens=* USEBACKQ" %f in (
 `""F:\GLW7\Distrib\System\Shells and scripting\f2ko.de\folderbrowse.exe"" "Hello World" "F:\GLW7\Distrib\System\Shells and scripting"`
) do echo %f
'"F:\GLW7\Distrib\System\Shells and scripting\f2ko.de\folderbrowse.exe"" "Hello' is not recognized as an internal or external command, operable program or batch file.
</code></pre>

In that case, the only solution I found to use a command and store its result in a variable is to set (temporarily) the default directory to the one of command itself :

<pre><code>pushd "%~d0%~p0"
FOR /F "tokens=* USEBACKQ" %%F IN (
 `FOLDERBROWSE "Hello world!" "F:\GLW7\Distrib\System\Layouts (print,display...)"`
) DO (SET MyFolder=%%F)
popd
echo My selected folder: %MyFolder%
</code></pre>

The result is then correct:

<pre><code>My selected folder: F:\GLW7\Distrib\System\OS install, recovery, VM\
Press any key to continue . . .
</code></pre>

Of course in the above example, I assume that my batch script is located in the same folder as the one of my executable command so that I can use the "%~d0%~p0" syntax. If this is not your case, then you have to find a way to locate your command path and change the default directory to its path.

NB: For those who wonder, the sample command used here (to select a folder) is FOLDERBROWSE.EXE. I found it on the web site f2ko.de (<a href="http://f2ko.de/en/cmd.php" rel="nofollow noreferrer">http://f2ko.de/en/cmd.php</a>).

If anyone has a better solution for that kind of commands accessible through a complex path, I will be very glad to hear of it.

Gilles

blocks|key|1536482|text|@echo+off
setlocal+EnableDelayedExpansion
FOR+/F+"tokens=1+delims=+"+%25%25i+IN+('echo+hola')+DO+(
++++set+TXT=%25%25i
)
echo+'TXT:+%25TXT%25'|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1536483|结果是'TXT:+hola‘|unstyled|1536484|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>@echo off
setlocal EnableDelayedExpansion
FOR /F "tokens=1 delims= " %%i IN ('echo hola') DO (
 set TXT=%%i
)
echo 'TXT: %TXT%'
</code></pre>

the result is 'TXT: hola'

I'm looking to get the result of a command as a variable in a Windows batch script (see <a href="https://stackoverflow.com/questions/58207/using-the-result-of-a-command-as-an-argument-in-bash#58214">how to get the result of a command in bash</a> for the bash scripting equivalent). A solution that will work in a .bat file is preferred, but other common windows scripting solutions are also welcome.

How do I get the result of a command in a variable in windows?

Windows

Python

我希望在Windows批处理脚本中以变量的形式获得命令的结果(参见中与bash脚本等效的内容)。可以在.bat文件中工作的解决方案是首选的，但也欢迎其他常用的windows脚本解决方案。

问如何在windows中获取变量中命令的结果？
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问如何在windows中获取变量中命令的结果？
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