Powershell Get-ChildItem 目录中最新的文件

我们生产的文件日期的名称。 (* 下面是日期的通配符) 我想抓取最后一个文件和包含该文件的文件夹也有一个日期(仅月)在其标题。

我正在使用 PowerShell，并将其安排为每天运行:

  $LastFile = *_DailyFile
$compareDate = (Get-Date).AddDays(-1)
$LastFileCaptured = Get-ChildItem -Recurse | Where-Object {$LastFile.LastWriteTime
-ge $compareDate}
170227 次浏览
小开
最佳答案

If you want the latest file in the directory and you are using only the LastWriteTime to determine the latest file, you can do something like below:

gci path | sort LastWriteTime | select -last 1

On the other hand, if you want to only rely on the names that have the dates in them, you should be able to something similar

gci path | select -last 1

Also, if there are directories in the directory, you might want to add a ?{-not $_.PsIsContainer}

小开

You could try to sort descending "sort LastWriteTime -Descending" and then "select -first 1." Not sure which one is faster

小开

Yes I think this would be quicker.

Get-ChildItem $folder | Sort-Object -Descending -Property LastWriteTime -Top 1
小开

Try:

$latest = (Get-ChildItem -Attributes !Directory | Sort-Object -Descending -Property LastWriteTime | select -First 1)
$latest_filename = $latest.Name

Explanation:

PS C:\Temp> Get-ChildItem -Attributes !Directory *.txt | Sort-Object -Descending -Property LastWriteTime | select -First 1




Directory: C:\Temp




Mode                LastWriteTime         Length Name
----                -------------         ------ ----
-a----         5/7/2021   5:51 PM           1802 Prison_Mike_autobiography.txt
  • Get-ChildItem -Attributes !Directory *.txt or Get-ChildItem or gci : Gets list of files ONLY in current directory. We can give a file extension filter too as needed like *.txt. Reference: gci, Get-ChildItem
  • Sort-Object -Descending -Property LastWriteTime : Sort files by LastWriteTime (modified time) in descending order. Reference
  • select -First 1 : Gets the first/top record. Reference Select-Object / select

Getting file metadata

PS C:\Temp> $latest.Name
Prison_Mike_autobiography.txt


PS C:\Temp> $latest.DirectoryName
C:\Temp


PS C:\Temp> $latest.FullName
C:\Temp\Prison_Mike_autobiography.txt


PS C:\Temp> $latest.CreationTime
Friday, May 7, 2021 5:51:19 PM




PS C:\Temp> $latest.Mode
-a----
小开

@manojlds's answer is probably the best for the scenario where you are only interested in files within a root directory:

\path
\file1
\file2
\file3

However, if the files you are interested are part of a tree of files and directories, such as:

\path
\file1
\file2
\dir1
\file3
\dir2
\file4

To find, recursively, the list of the 10 most recently modified files in Windows, you can run:

PS > $Path = pwd # your root directory
PS > $ChildItems = Get-ChildItem $Path -Recurse -File
PS > $ChildItems | Sort-Object LastWriteTime -Descending | Select-Object -First 10 FullName, LastWriteTime

提交答案