[英]How to add a symbol in a middle of a file name in PS
I have modified several thousand files with a various things requested by the owners.我已经根据所有者的要求修改了数千个文件。 Now, I need to add one final thing and I am not 100% on how to do it.
现在,我需要添加最后一件事,但我不是 100% 知道如何去做。
Scenario is as follows - all files have a 10 digit number at the start, I need to add a hyphen after the number.场景如下 - 所有文件的开头都有一个 10 位数字,我需要在数字后添加一个连字符。 String is a variable but it is always the same length.
字符串是一个变量,但它的长度始终相同。 1234567890abcdefgh.xls would be an example
1234567890abcdefgh.xls 就是一个例子
I have used GCI to make changes to symbols and static parts but not sure how to call for insertion in a specific place of a file (after the 10th character of a variable string)我已经使用 GCI 对符号和 static 部分进行了更改,但不确定如何调用插入文件的特定位置(在变量字符串的第 10 个字符之后)
Any ideas would be most welcome!任何想法都将受到欢迎!
You can use the $matches
you get from the capturing groups of a -match
comparison:您可以使用从
-match
比较的捕获组中获得的$matches
:
(Get-ChildItem -Path 'X:\WhereTheFilesAre' -File) |
Where-Object { $_.BaseName -match '^(\d{10})([^-].*)' } |
Rename-Item -NewName { '{0}-{1}{2}' -f $matches[1], $matches[2], $_.Extension }
or by using the Substring()
method:或者使用
Substring()
方法:
(Get-ChildItem -Path 'X:\WhereTheFilesAre' -File) |
Where-Object { $_.BaseName -match '^\d{10}[^-]' } |
Rename-Item -NewName { $_.Name.Substring(0,10) + '-' + $_.Name.Substring(10) }
or use the regex -replace
operator:或使用 regex
-replace
运算符:
(Get-ChildItem -Path 'X:\WhereTheFilesAre' -File) |
Where-Object { $_.BaseName -match '^\d{10}[^-]' } |
Rename-Item -NewName { $_.Name -replace '^(\d{10})', '$1-' }
You can use string.Insert()
to insert a string into another at a specific offset:您可以使用
string.Insert()
将一个字符串插入另一个字符串中的特定偏移量:
PS ~> '1234567890abcdefgh.xls'.Insert(10, '-')
1234567890-abcdefgh.xls
To apply to all files in a directory, you could do something like this:要应用于目录中的所有文件,您可以执行以下操作:
Get-ChildItem -File |Where-Object Name -match '^\d{10}[^-]' |Rename-Item -NewName { $_.Name.Insert(10, '-') }
The regular expression pattern ^\d{10}[^-]
will only match file names that start with 10 digits followed by something other than a hyphen (to avoid renaming files that already comply with the naming convention)正则表达式模式
^\d{10}[^-]
将只匹配以 10 位数字开头后跟连字符以外的内容的文件名(以避免重命名已经符合命名约定的文件)
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