仅更改文件名的一部分的多个文件的名称

Question

我有 50 个文件，文件名的格式如下：

SIGMOID 01012019 - 01082019.XLS
SIGMOID 01012019 - 01022019.XLS

我想改成：

SIGMOID_01012019 - 01082019.XLS
SIGMOID_01012019 - 01022019.XLS

我想更新部分文件名并添加下划线而不是名称中的第一个空格 space。

谢谢

我尝试在 powershell 中编写脚本

dir |
Where-Object { $_.name.Contains(" ") } |
Rename-Item -NewName { $_.name -replace " ","_" }

但这会更新每个空白 space。

Answer 1

也许不是最优雅的解决方案，但也许正是您要找的：

Rename-Item -NewName { $_.name -replace "SIGMOID ","SIGMOID_" }

Answer 2

假设您有如下文件：

SIGMOID 01012019 - 01082019.XLS
SIGMOID 01012019 - 01022019.XLS
SOMETHINGELSE    01012019 - 02022019.XLS
YETANOTHERPREFIX 01012019 - 03022019.XLS

然后下面的代码将重命名它们：

$sourceFolder = 'THE PATH OF THE ROOTFOLDER THAT STORES THE XLS FILES TO RENAME'   #'#  enter your rootpath here
Get-ChildItem -Path $sourceFolder -File | 
    Where-Object { $_.Name -match '^\w+ +\d{8}.*\.xlsx?' } | 
    ForEach-Object { 
        $_ | Rename-Item -NewName ($_.Name -replace '^(\w+) +(\d{8}.*\.xlsx?)', '_') -WhatIf
    }

成为

SIGMOID_01012019 - 01082019.XLS
SIGMOID_01012019 - 01022019.XLS
SOMETHINGELSE_02012019 - 01022019.XLS
YETANOTHERPREFIX_03012019 - 01022019.XLS

注意：如果您对结果感到满意，请删除 -WhatIf

正则表达式详细信息：

^           Assert position at the beginning of a line (at beginning of the string or after a line break character)
(           Match the regular expression below and capture its match into backreference number 1
   \w       Match a single character that is a “word character” (letters, digits, etc.)
      +     Between one and unlimited times, as many times as possible, giving back as needed (greedy)
)           
\           Match the character “ ” literally
   +        Between one and unlimited times, as many times as possible, giving back as needed (greedy)
(           Match the regular expression below and capture its match into backreference number 2
   \d       Match a single digit 0..9
      {8}   Exactly 8 times
   .        Match any single character that is not a line break character
      *     Between zero and unlimited times, as many times as possible, giving back as needed (greedy)
   \.       Match the character “.” literally
   xls      Match the characters “xls” literally
   x        Match the character “x” literally
      ?     Between zero and one times, as many times as possible, giving back as needed (greedy)
)

Answer 3

将我的评论变成答案，

仅在第一个 space 拆分名称并使用下划线连接
'* *' 确保文件名中至少有一个 space。

Get-ChildItem '* *' | 
     Rename-Item -NewName {($_.Name -split ' ',2 -join '_')} -Whatif

如果输出正常，删除 -WhatIf

在连续运行中，这会将示例中的 - 更改为 _- 等

为了防止这种情况，您需要一个 Where-Object 来排除带下划线的文件。

Get-ChildItem '* *' | 
  Where-Object Name -notmatch '^\S+_' |
     Rename-Item -NewName {($_.Name -split ' ',2 -join '_')} -Whatif

Answer 4

嗯，换两次怎么样：

'SIGMOID 01012019 - 01082019.XLS' -replace ' ','_' -replace '_-_',' - '

SIGMOID_01012019 - 01082019.XLS

或（将 space 替换为两边都没有破折号）：

'SIGMOID 01012019 - 01082019.XLS' -replace '[^-] [^-]','_'

SIGMOI_1012019 - 01082019.XLS

试试 rename-item -whatif ...

仅更改文件名的一部分的多个文件的名称

change the name of multiple file for just a part of the filename

powershell

etl

file-rename