windows 删除小于特定大小的文件
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Delete files less than a specific size
提问by l--''''''---------''''''''''''
I would like to delete all files that are less than a specific size in a directory. Does anyone know if there is a Windows command that will do this? something like del *.* where size<3kb
我想删除目录中小于特定大小的所有文件。有谁知道是否有 Windows 命令可以执行此操作？就像是del *.* where size<3kb
I am currently doing this:
我目前正在这样做：
for /F %%A in ("*.pdf") do If %%~zA LSS 20103409 del %%~fA
and the ouput I get is:
我得到的输出是：
C:\Documents and Settings\agordon\Desktop\test>If 6440450 LSS 20103409 del C:\Do
cuments and Settings\agordon\Desktop\test\US Tox 01-06-11.pdf
The system cannot find the path specified.
...even though that PDF file is small enough to be deleted.
...即使该 PDF 文件小到可以删除。
What am I doing wrong?
我究竟做错了什么？
This is actually working:
这实际上是有效的：
FOR %%F IN (*.pdf) DO (
IF %%~zF LSS 20103409 DEL %%F
)
However it is not recognizing the file names because they have spaces! How do I convert the Windows name to a "DOS" name in that script? For example, the Windows name is file name.pdfI would probably need to convert to "DOS" and it would look like this file_name.pdfor something like that.
但是它无法识别文件名，因为它们有空格！如何在该脚本中将 Windows 名称转换为“DOS”名称？例如，Windows 名称是file name.pdf我可能需要转换为“DOS”，它看起来像这样file_name.pdf或那样。
回答by Mrchief
Try this from a batch script:
从批处理脚本中试试这个：
@echo off
setlocal
for /f "usebackq delims=;" %%A in (`dir /b *.pdf`) do If %%~zA LSS 3145728 del "%%A"
回答by Rob Moore
Ok so I used AtomicParsley in a cmd script to add artwork to all my MP4 movies in over 400 sub folders with the --overWrite option. It sometimes barfs and the orignal file is left at less than 2k. I needed a way to find all these messed up MP4 files so I can redownload them.
好的，所以我在 cmd 脚本中使用了 AtomicParsley，使用 --overWrite 选项将插图添加到 400 多个子文件夹中的所有 MP4 电影中。它有时会导致原始文件少于 2k。我需要一种方法来找到所有这些乱七八糟的 MP4 文件，以便我可以重新下载它们。
This is what I used from the command line using Mrchief's example and it works like a charm in windows 7.
这是我使用 Mrchief 的示例从命令行使用的，它在 Windows 7 中的作用就像一个魅力。
@for /f "usebackq delims=;" %A in (`dir /s /b *.mp4`) do @If %~zA LSS 2048 echo "%A"
and this is the output after processing 32 of the files
这是处理 32 个文件后的输出
D:\Movie>@for /f "usebackq delims=;" %A in (`dir /s /b *.mp4`) do @If %~zA LSS 2048 echo "%A"
"D:\Movie\Action\Deadland (2009)\Deadland (2009).mp4"
"D:\Movie\Science Fiction\Alien3 (1992)\Alien3 (1992).mp4"
D:\Movie>
you could replace the echo with del and change the 2048 to search for a different size.
您可以用 del 替换 echo 并更改 2048 以搜索不同的大小。
回答by aschipfl
Here is a different approach using robocopyand its filter capabilities. Here is an excerpt of the File Selection Optionsshown when robocopy /?is typed into the command prompt window:
这是一种不同的使用方法robocopy及其过滤功能。以下是在命令提示符窗口中键入File Selection Options时显示的摘录robocopy /?：
/MAX:n :: MAXimum file size - exclude files bigger than n bytes. /MIN:n :: MINimum file size - exclude files smaller than n bytes. /MAXAGE:n :: MAXimum file AGE - exclude files older than n days/date. /MINAGE:n :: MINimum file AGE - exclude files newer than n days/date. /MAXLAD:n :: MAXimum Last Access Date - exclude files unused since n. /MINLAD:n :: MINimum Last Access Date - exclude files used since n. (If n < 1900 then n = n days, else n = YYYYMMDD date).
/MAX:n :: MAXimum file size - exclude files bigger than n bytes. /MIN:n :: MINimum file size - exclude files smaller than n bytes. /MAXAGE:n :: MAXimum file AGE - exclude files older than n days/date. /MINAGE:n :: MINimum file AGE - exclude files newer than n days/date. /MAXLAD:n :: MAXimum Last Access Date - exclude files unused since n. /MINLAD:n :: MINimum Last Access Date - exclude files used since n. (If n < 1900 then n = n days, else n = YYYYMMDD date).
Hence the /MINand /MAXoptions can be applied here. Since we do not want to copy any files, use the /Loption to list all the items that would be copied without the switch, then parse the returned list by a for /Floop, which holds the actual deletion command delin the body:
因此可以在此处应用/MIN和/MAX选项。由于我们不想复制任何文件，因此使用/L选项列出所有将在没有开关的情况下复制的项目，然后通过for /F循环解析返回的列表，该循环将实际删除命令保存del在正文中：
set "TARGETDIR=."
set "FILES=*.pdf"
for /F "tokens=*" %%F in ('
robocopy "%TARGETDIR%" "%TARGETDIR%" "%FILES%" ^
/L /IS /FP /NC /NS /NDL /NP /NJH /NJS ^
/MIN:0 /MAX:3071
') do (
ECHO del "%%F"
)
After having tested, remove the upper-case ECHOfrom the script to actually delete files.
测试后，ECHO从脚本中删除大写字母以实际删除文件。
Besides /MIN, /MAXand /L, there are several other options defined in the robocopycommand line, most of which care for the needed output, namely a simple list of full paths of matching files, without any extra information like headers, footers or summaries.
除了/MIN,/MAX和/L，robocopy命令行中还定义了其他几个选项，其中大部分关心所需的输出，即匹配文件的完整路径的简单列表，没有任何额外的信息，如页眉、页脚或摘要。
The source and destination directories are both set to our target directory. Normally this would not work, of course (you cannot copy files onto themselves), but since /Lis stated, the file list is generated, but only if the switch /ISis given too (meaning that "same files" are to be regarded).
源目录和目标目录都设置为我们的目标目录。通常这当然是行不通的（您不能将文件复制到它们自己上），但是既然/L已经说明，文件列表就会生成，但前提/IS是也给出了开关（意味着要考虑“相同的文件”）。
回答by AndreDurao
BTW: Using PowerShell (on Windows 10) was the easier way for me:
顺便说一句：使用 PowerShell（在 Windows 10 上）对我来说是更简单的方法：
I only did this on the directory where I wish to delete files smaller than 20MB:
我只在我希望删除小于 20MB 的文件的目录上执行此操作：
ls | where {$_.Length -lt 20mb} | Remove-Item
回答by acpmasquerade
There isn't a switch in the Del command which will delete files based on filesize.
Del 命令中没有开关会根据文件大小删除文件。
回答by diagonalbatman
I am not sure how to do this from DOS, but this is something we have used in the past; it uses VBScript, so you would call this filesoversize.vbs.
我不确定如何从 DOS 执行此操作，但这是我们过去使用过的；它使用 VBScript，因此您可以将其称为 filesoversize.vbs。
Dim strPath
Dim lngSize
Dim fso
Dim fold
Dim files
Dim file
lngSize = 10000 ' The threshold in bytes (this is 100k)
strPath = "C:\temp\" 'The folder you want to start in
Set fso = CreateObject("scripting.filesystemobject")
Set fold = fso.GetFolder(strPath)
Set files = fold.files
For Each file In files
If file.Size <= lngSize Then file.Delete True
Next
