适用范围

windows 

问题概述

1. windows环境
2. 文件夹中的 文件/文件夹按名称排序
3. 只保留固定数量的 文件/文件夹，其它全部删除

问题原因

@echo off 
setlocal enabledelayedexpansion 

REM change the dir
set "target_dir=D:\test"  

REM change file or dir limit
set "maxFolders=7"

REM change file or dir format
set "fileFormat=full_*.dmp"

REM change delete type: 0-dir, 1-file
set "fileType=1"


cd /d "%target_dir%"  

set "sortedFolders="  
set "folderCount=0"    

set "checkFile="  

if !fileType! == 1 (  
    set "checkFile=dir %fileFormat% /B/ON"   
) else (  
    set "checkFile=dir %fileFormat% /AD /B /ON"   
)  
  

for /F "delims=" %%D in ('%checkFile%') do (  
    set "sortedFolders=!sortedFolders! %%D" 
    set /A "folderCount+=1"  
)  

echo %sortedFolders%
echo %checkFile%
echo %folderCount%

for %%D in (%sortedFolders%) do (  
    if !folderCount! GTR %maxFolders% (  
        
	if !fileType! == 1 (  
    		del  "%%D"    
        	) else (  
    		rd /S /Q "%%D"  
       	)  	
        
        set /A "folderCount-=1"   
    )  
    
) 
 
  
echo Done.  
endlocal

解决方案

REM change the dir
set "target_dir=D:\test"  

REM change file or dir limit
set "maxFolders=7"

REM change file or dir format
set "fileFormat=full_*.dmp"

REM change delete type: 0-dir, 1-file
set "fileType=1"

以上4个变量请根据需求修改，部署生产前请详细阅读代码及做好充足测试。

参考文档