blocks|key|3253186|text|您可以使用IF+EXIST来检查文件：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3253187|IF+EXIST+"filename"+(
++REM+Do+one+thing
)+ELSE+(
++REM+Do+another+thing
)|code-block|syntax|javascript|3253188|如果你不需要"else"，你可以这样做：|3253189|set+__myVariable=
IF+EXIST+"C:\folder+with+space\myfile.txt"+set+__myVariable=C:\folder+with+space\myfile.txt
IF+EXIST+"C:\some+other+folder+with+space\myfile.txt"+set+__myVariable=C:\some+other+folder+with+space\myfile.txt
set+__myVariable=|3253190|以下是搜索文件或文件夹的工作示例：|3253191|REM+setup

echo+"some+text"+>+filename
mkdir+"foldername"

REM+finds+file++++

IF+EXIST+"filename"+(
++ECHO+file+filename+exists
)+ELSE+(
++ECHO+file+filename+does+not+exist
)

REM+does+not+find+file

IF+EXIST+"filename2.txt"+(
++ECHO+file+filename2.txt+exists
)+ELSE+(
++ECHO+file+filename2.txt+does+not+exist
)

REM+folders+must+have+a+trailing+backslash++++

REM+finds+folder

IF+EXIST+"foldername\"+(
++ECHO+folder+foldername+exists
)+ELSE+(
++ECHO+folder+foldername+does+not+exist
)

REM+does+not+find+folder

IF+EXIST+"filename\"+(
++ECHO+folder+filename+exists
)+ELSE+(
++ECHO+folder+filename+does+not+exist
)|3253192|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]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

You can use IF EXIST to check for a file:

<pre><code>IF EXIST "filename" (
 REM Do one thing
) ELSE (
 REM Do another thing
)
</code></pre>

If you do not need an "else", you can do something like this:

<pre><code>set __myVariable=
IF EXIST "C:\folder with space\myfile.txt" set __myVariable=C:\folder with space\myfile.txt
IF EXIST "C:\some other folder with space\myfile.txt" set __myVariable=C:\some other folder with space\myfile.txt
set __myVariable=
</code></pre>

Here's a working example of searching for a file or a folder:

<pre><code>REM setup

echo "some text" &gt; filename
mkdir "foldername"

REM finds file 

IF EXIST "filename" (
 ECHO file filename exists
) ELSE (
 ECHO file filename does not exist
)

REM does not find file

IF EXIST "filename2.txt" (
 ECHO file filename2.txt exists
) ELSE (
 ECHO file filename2.txt does not exist
)

REM folders must have a trailing backslash 

REM finds folder

IF EXIST "foldername\" (
 ECHO folder foldername exists
) ELSE (
 ECHO folder foldername does not exist
)

REM does not find folder

IF EXIST "filename\" (
 ECHO folder filename exists
) ELSE (
 ECHO folder filename does not exist
)
</code></pre>

blocks|key|3038995|text|键入IF+/？为了获得有关if的帮助，它清楚地解释了如何使用IF+EXIST。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3038996|要删除除某些文件夹以外的整个树，请查看此问题的答案：Windows+batch+script+to+delete+everything+in+a+folder+except+one|offset|length|3038997|最后，复制只是意味着调用COPY，调用另一个bat文件可以像这样完成：|3038998|MYOTHERBATFILE.BAT+sync.bat+myprogram.ini|code-block|syntax|javascript|3038999|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/3008567/windows-batch-script-to-delete-everything-in-a-folder-except-one/3009151^0|0|Q|1S|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@$D|W|E|X|1|Y]]|A|$]]|$1|F|3|G|5|6|7|Z|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]]]

Type IF /? to get help about if, it clearly explains how to use IF EXIST.

To delete a complete tree except some folders, see the answer of this question: <a href="https://stackoverflow.com/questions/3008567/windows-batch-script-to-delete-everything-in-a-folder-except-one/3009151">Windows batch script to delete everything in a folder except one</a>

Finally copying just means calling COPY and calling another bat file can be done like this:

<pre><code>MYOTHERBATFILE.BAT sync.bat myprogram.ini
</code></pre>

blocks|key|3039022|text|以下是一个很好的例子，说明了如果文件存在或不存在时如何执行命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3039023|if+exist+C:\myprogram\sync\data.handler+echo+Now+Exiting+&&+Exit
if+not+exist+C:\myprogram\html\data.sql+Exit|code-block|syntax|javascript|3039024|我们将把这三个文件放在一个临时位置。删除文件夹后，它将恢复这三个文件。|3039025|xcopy+"test"+"C:\temp"
xcopy+"test2"+"C:\temp"
del+C:\myprogram\sync\
xcopy+"C:\temp"+"test"
xcopy+"C:\temp"+"test2"
del+"c:\temp"|3039026|使用XCOPY命令：|offset|length|3039027|xcopy+"C:\myprogram\html\data.sql"++/c+/d+/h+/e+/i+/y++"C:\myprogram\sync\"|3039028|我将解释/c+/d+/h+/e+/i+/y的含义：|style|CODE|3039029|++/C+++++++++++Continues+copying+even+if+errors+occur.
++/D:m-d-y+++++Copies+files+changed+on+or+after+the+specified+date.
+++++++++++++++If+no+date+is+given,+copies+only+those+files+whose
+++++++++++++++source+time+is+newer+than+the+destination+time.
++/H+++++++++++Copies+hidden+and+system+files+also.
++/E+++++++++++Copies+directories+and+subdirectories,+including+empty+ones.
+++++++++++++++Same+as+/S+/E.+May+be+used+to+modify+/T.
++/T+++++++++++Creates+directory+structure,+but+does+not+copy+files.+Does+not
+++++++++++++++include+empty+directories+or+subdirectories.+/T+/E+includes
++/I+++++++++++If+destination+does+not+exist+and+copying+more+than+one+file,
+++++++++++++++assumes+that+destination+must+be+a+directory.
++/Y+++++++++++Suppresses+prompting+to+confirm+you+want+to+overwrite+an
+++++++++++++++existing+destination+file.

`To+see+all+the+commands+type`xcopy+/?+in+cmd|3039030|3039031|使用选项sync.bat+myprogram.ini调用其他批处理文件。|blockquote|3039032|3039033|3039034|我不知道你这么说是什么意思，但是如果你只是想打开这两个文件，你只需要把文件的路径放在下面|3039035|Path/sync.bat
Path/myprogram.ini|3039036|3039037|如果是在Bash环境中，这对我来说很容易，但我不知道如何测试文件或文件夹是否存在，以及它是否是文件或文件夹。|3039038|3039039|3039040|您正在使用批处理文件。您在前面提到过，您必须创建一个.bat文件才能使用以下内容：|3039041|3039042|我必须创建一个执行此操作的.BAT文件：|3039043|3039044|entityMap|0|LINK|mutability|MUTABLE|url|http://en.wikipedia.org/wiki/XCOPY^0|0|0|0|0|2|5|0|0|0|4|H|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1P|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|1Q|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|1R|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|1S|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|1T|8|@]|9|@$M|1U|N|1V|1|1W]]|A|$]]|$1|O|3|P|5|D|7|1X|8|@]|9|@]|A|$E|F]]|$1|Q|3|R|5|6|7|1Y|8|@$M|1Z|N|20|S|T]]|9|@]|A|$]]|$1|U|3|V|5|D|7|21|8|@]|9|@]|A|$E|F]]|$1|W|3|-4|5|6|7|22|8|@]|9|@]|A|$]]|$1|X|3|Y|5|Z|7|23|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|24|8|@]|9|@]|A|$]]|$1|11|3|-4|5|6|7|25|8|@]|9|@]|A|$]]|$1|12|3|13|5|6|7|26|8|@]|9|@]|A|$]]|$1|14|3|15|5|D|7|27|8|@]|9|@]|A|$E|F]]|$1|16|3|-4|5|6|7|28|8|@]|9|@]|A|$]]|$1|17|3|18|5|Z|7|29|8|@]|9|@]|A|$]]|$1|19|3|-4|5|6|7|2A|8|@]|9|@]|A|$]]|$1|1A|3|-4|5|6|7|2B|8|@]|9|@]|A|$]]|$1|1B|3|1C|5|6|7|2C|8|@]|9|@]|A|$]]|$1|1D|3|-4|5|6|7|2D|8|@]|9|@]|A|$]]|$1|1E|3|1F|5|Z|7|2E|8|@]|9|@]|A|$]]|$1|1G|3|-4|5|6|7|2F|8|@]|9|@]|A|$]]|$1|1H|3|-4|5|6|7|2G|8|@]|9|@]|A|$]]]|1I|$1J|$5|1K|1L|1M|A|$1N|1O]]]]

Here is a good example on how to do a command if a file does or does not exist:

<pre><code>if exist C:\myprogram\sync\data.handler echo Now Exiting &amp;&amp; Exit
if not exist C:\myprogram\html\data.sql Exit
</code></pre>

We will take those three files and put it in a temporary place. After deleting the folder, it will restore those three files.

<pre><code>xcopy "test" "C:\temp"
xcopy "test2" "C:\temp"
del C:\myprogram\sync\
xcopy "C:\temp" "test"
xcopy "C:\temp" "test2"
del "c:\temp"
</code></pre>

Use the <a href="http://en.wikipedia.org/wiki/XCOPY" rel="noreferrer">XCOPY</a> command:

<pre><code>xcopy "C:\myprogram\html\data.sql" /c /d /h /e /i /y "C:\myprogram\sync\"
</code></pre>

I will explain what the <code>/c /d /h /e /i /y</code> means:

<pre><code> /C Continues copying even if errors occur.
 /D:m-d-y Copies files changed on or after the specified date.
 If no date is given, copies only those files whose
 source time is newer than the destination time.
 /H Copies hidden and system files also.
 /E Copies directories and subdirectories, including empty ones.
 Same as /S /E. May be used to modify /T.
 /T Creates directory structure, but does not copy files. Does not
 include empty directories or subdirectories. /T /E includes
 /I If destination does not exist and copying more than one file,
 assumes that destination must be a directory.
 /Y Suppresses prompting to confirm you want to overwrite an
 existing destination file.

`To see all the commands type`xcopy /? in cmd
</code></pre>

<blockquote>
 Call other batch file with option sync.bat myprogram.ini.
</blockquote>

I am not sure what you mean by this, but if you just want to open both of these files you just put the path of the file like

<pre><code>Path/sync.bat
Path/myprogram.ini
</code></pre>

<blockquote>
 If it was in the Bash environment it was easy for me, but I do not
 know how to test if a file or folder exists and if it is a file or
 folder.
</blockquote>

You are using a batch file. You mentioned earlier you have to create a .bat file to use this:

<blockquote>
 I have to create a .BAT file that does this:
</blockquote>

I have to create a <code>.BAT</code> file that does this:

<ol>
<li>If <code>C:\myprogram\sync\data.handler</code> exists, exit;</li>
<li>If <code>C:\myprogram\html\data.sql</code> does not exist, exit;</li>
<li>In <code>C:\myprogram\sync\</code> delete all files and folders except (<code>test</code>, <code>test3</code> and <code>test2</code>)</li>
<li>Copy <code>C:\myprogram\html\data.sql</code> to <code>C:\myprogram\sync\</code></li>
<li>Call other batch file with option <code>sync.bat myprogram.ini</code>.</li>
</ol>

If it was in the Bash environment it was easy for me, but I do not know how to test if a file or folder exists and if it is a file or folder.

How to verify if a file exists in a batch file?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我必须创建一个执行此操作的.BAT文件：如果C:\myprogram\sync\data.handler存在，则退出；如果C:\myprogram\html\data.sql不存在，则退出；在C:\myprogram\sync\中删除除(D10</code>、D11</code>和test2)Copy C:\mypro...

问如何验证批处理文件中是否存在文件？
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