I don't know if this would be best done in PowerShell, but basically I have a lot of movies with names that are incorrect. The folder name for each movie is correct however.
Within a folder, I want to go through each folder and rename an .mp4 file to the same name as the folder.
Each folder has only an .mp4 file in it and a .jpg file, but I want to rename just the .mp4 file (although renaming both really wouldn't be bad either.)
Is there a simple way to do this in PowerShell?
可读版本：
Get-ChildItem -Attributes Directory D:\Videos | ForEach-Object {
Get-ChildItem -Path $_ *.mp4 | Rename-Item -NewName "$_.mp4"
}
第一个Get-ChildItem获取其中的所有目录对象D:\Videos并ForEach-Object迭代每个目录，如$_下面的块所示。
在块内，再次用于通过选项从给定目录Get-ChildItem中获取文件。最后，用于重命名视频文件而不将其从当前目录中移动。mp4-PathRename-Item
像这样的东西应该工作：
# run from your D:\Movies (or whatever) folder
# Go through all subfolders of the folder we're currently in, and find all of the .MP4
# files. For each .MP4 file we find...
ls -Recurse -Filter *.mp4 | %{
# Get the full path to the MP4 file; use it to find the name of the parent folder.
# $_ represents the .MP4 file that we're currently working on.
# Split-Path with the -Parent switch will give us the full path to the parent
# folder. Cast that path to a System.IO.DirectoryInfo object, and get the
# Name property, which is just the name of the folder.
# There are other (maybe better) ways to do this, this is just the way I chose.
$name = ([IO.DirectoryInfo](Split-Path $_.FullName -Parent)).Name
# Tell the user what we're doing...
Write-Host "Renaming $_ to $($name).mp4..."
# Rename the file.
# We have to provide the full path to the file we're renaming, so we use
# $_.FullName to get it. The new name of the file is the same as that of the
# parent folder, which we stored in $name.
# We also remember to add the .MP4 file extension back to the name.
Rename-Item -Path $_.FullName -NewName "$($name).mp4"
}
这是一个跨版本示例：
Get-ChildItem D:\temp\*\*.mp4 | Rename-Item -NewName {$_.Directory.Name +'.mp4'}