windows 批处理文件：检查是否存在具有模式的文件
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Batch-file: Check if file with pattern exist
提问by vasilenicusor
I have a strange situation and I don't know what is wrong
我有一个奇怪的情况，我不知道出了什么问题
I need to check if in a directory exist at least one file with a pattern.
我需要检查目录中是否至少存在一个具有模式的文件。
IF EXIST d:\*Backup*.* (
ECHO "file exist"
) ELSE (
ECHO "file not exist"
)
If on d:\ I have a file x_Backup.txtand a folder BackupI get file existbut if i have only folder BackupI get again file exist, seems that the dot from path is ignored.
如果d：\我有一个文件x_Backup.txt和文件夹Backup，我得到file exist，但如果我只有文件夹Backup我爬不起来file exist，似乎从路径点被忽略。
回答by Squashman
There are undocumented wildcards that you can use to achieve this as well.
您也可以使用未记录的通配符来实现此目的。
IF EXIST "D:\*Backup*.<" (
ECHO "file exist"
) ELSE (
ECHO "file not exist"
)
This wildcard option and other were discussed in length at the following two links. http://www.dostips.com/forum/viewtopic.php?t=6207
在以下两个链接中详细讨论了此通配符选项和其他选项。 http://www.dostips.com/forum/viewtopic.php?t=6207
http://www.dostips.com/forum/viewtopic.php?f=3&t=5057
http://www.dostips.com/forum/viewtopic.php?f=3&t=5057
From those links:
从这些链接：
The following wildcard characters can be used in the pattern string.
Wildcard character Meaning
* (asterisk)
Matches zero or more characters
? (question mark)
Matches a single character
"
Matches either a period or zero characters beyond the name string
>
Matches any single character or, upon encountering a period or end of name string, advances the expression to the end of the set of contiguous >
<
Matches zero or more characters until encountering and matching the final . in the name
回答by Aacini
Use this; it works with any specific pattern:
用这个; 它适用于任何特定模式：
set "fileExist="
for %%a in (d:\*Backup*.*) do set "fileExist=1" & goto continue
:continue
IF DEFINED fileExist (
ECHO "file exist"
) ELSE (
ECHO "file not exist"
)
回答by foxidrive
This is another alternative.
这是另一种选择。
dir d:\*back*.* /b /a-d >nul 2>&1
if errorlevel 1 echo files exist
回答by user326608
*.*is equivalent to *in dos. It just means 'anything', not anything-period-anything.
*.*相当于*在 dos 中。它只是意味着“任何东西”，而不是任何东西-时期-任何东西。
To check for the directory, try this:
要检查目录，请尝试以下操作：
IF EXIST D:\*Backup*\ (
ECHO "directory exist"
) ELSE (
ECHO "directory not exist"
)
