I need help to create a command in PowerShell to rename a sequence of files with this format:
001.jpg
001_1.jpg
002.jpg
002_1.jpg
003.jpg
003_1.jpg
into a new sequence that can start with a number such as 9612449, but keeping intact the suffixes, so new sequence would be:
9612449.jpg
9612449_1.jpg
9612450.jpg
9612450_1.jpg
9612451.jpg
9612451_1.jpg
Assuming that 9612449 is an offset to be added to the existing numbers that make up the first _-separated token or all of the base file names:
# Simulate a set of input files.
$files = [System.IO.FileInfo[]] (
'001.jpg',
'001_1.jpg',
'002.jpg',
'002_1.jpg',
'003.jpg',
'003_1.jpg'
)
# The number to offset the existing numbers by.
$offset = 9612449 - 1
# Process each file and apply the offset.
$files | ForEach-Object {
# Split the base name into the number and the suffix.
$num, $suffix = $_.BaseName -split '(?=_)', 2
# Construct and output the new name, with the offset applied.
'{0}{1}{2}' -f ($offset + $num), $suffix, $_.Extension
}
The above yields the output shown in your question.
Applied to a real file-renaming operation, you'd do something like:
Get-ChildItem -LiteralPath . -Filter *.jpg |
Rename-Item -NewName {
$num, $suffix = $_.BaseName -split '(?=_)', 2
'{0}{1}{2}' -f ($offset + $num), $suffix, $_.Extension
} -WhatIf
Note: The -WhatIf common parameter in the command above previews the operation. Remove -WhatIf once you're sure the operation will do what you want.
Related
is there a way to bulk rename items such that a folder with the items arranged in order would have their name changed into numbers with zero padding regardless of extension?
for example, a folder with files named:
file1.jpg
file2.jpg
file3.jpg
file4.png
file5.png
file6.png
file7.png
file8.jpg
file9.jpg
file10.mp4
would end up like this:
01.jpg
02.jpg
03.jpg
04.png
05.png
06.png
07.png
08.jpg
09.jpg
10.mp4
i had a script i found somewhere that can rename files in alphabetical order. however, it seems to only accepts conventionally bulk renamed files (done by selecting all the files, and renaming them such that they read "file (1).jpg" etc), which messes up the ordering when dealing with differing file extensions. it also doesn't seem to rename files with variations in their file names. here is what the code looked like:
Get-ChildItem -Path C:\Directory -Filter file* | % {
$matched = $_.BaseName -match "\((?<number>\d+)\)"
if (-not $matched) {break;}
[int]$number = $Matches["number"]
Rename-Item -Path $_.FullName -NewName "$($number.ToString("000"))$($_.Extension)"
}
If your intent is to rename the files based on the ending digits of their BaseName you can use Get-ChildItem in combination with Where-Object for filtering them and then pipe this result to Rename-Item using a delay-bind script block.
Needles to say, this code does not handle file collision. If there is more than one file with the same ending digits and the same extension this will error out.
Get-ChildItem -Filter file* | Where-Object { $_.BaseName -match '\d+$' } |
Rename-Item -NewName {
$basename = '{0:00}' -f [int][regex]::Match($_.BaseName, '\d+$').Value
$basename + $_.Extension
}
To test the code you can use the following:
#'
file1.jpg
file2.jpg
file3.jpg
file4.png
file5.png
file6.png
file7.png
file8.jpg
file9.jpg
file10.mp4
'# -split '\r?\n' -as [System.IO.FileInfo[]] | ForEach-Object {
$basename = '{0:00}' -f [int][regex]::Match($_.BaseName, '\d+$').Value
$basename + $_.Extension
}
You could just use the number of files found in the folder to create the appropriate 'numbering' format for renaming them.
$files = (Get-ChildItem -Path 'D:\Test' -File) | Sort-Object Name
# depending on the number of files, create a formating template
# to get the number of leading zeros correct.
# example: 645 files would create this format: '{0:000}{1}'
$format = '{0:' + '0' * ($files.Count).ToString().Length + '}{1}'
# a counter for the index number
$index = 1
# now loop over the files and rename them
foreach ($file in $files) {
$file | Rename-Item -NewName ($format -f $index++, $file.Extension) -WhatIf
}
The -WhatIf switch is a safety measure. With this, no file gets actually renamed, you will only see in the console what WOULD happen. Once you are content with that, remove the -WhatIf switch from the code and run again to rename all your files in the folder
I'm not super knowledgeable when it comes to coding but I'm trying to use PowerShell to find a way to remove the first X number of characters and Last X number of characters from multiple files. Hence, only keeping the middle section.
Ex)
INV~1105619~43458304~~1913216023~0444857 , where 1913216023 is the invoice #. Anything before and after that needs to be removed from the file name.
I used:
get-childitem *.pdf | rename-item -newname { string.substring(22) } to remove the first 22 characters but cannot manage to create a code to remove the remaining half. All files have the same number of characters but various numbers before and after the invoice number (every file name is different).
Any help/advice is greatly appreciated!
There are several methods of doing this.
If you are sure you won't run into naming collisions (so all files have a different invoice number), here's how with three extra alternatives:
(Get-ChildItem -Path 'D:\Test' -Filter '*~~*~*.pdf' -File) |
Rename-Item -NewName {
# my favorite method
'{0}{1}' -f ($_.BaseName -split '~')[-2], $_.Extension
# or
# '{0}{1}' -f ($_.BaseName -replace '^.*~~(\d{10})~.+$', '$1'), $_.Extension
# or this one
# '{0}{1}' -f ([regex]'~~(\d+)~').Match($_.BaseName).Groups[1].Value, $_.Extension
# or if you are absolutely sure of the position and length of the invoice number
# '{0}{1}' -f $_.BaseName.Substring(22,10), $_.Extension
}
The Get-ChildItem line is between brackets to make sure the gathering of the FileInfo objects is complete before carrying on. If you don't do that, chances are you wil try and rename items multiple times
Assuming the target substring always has the same length, there's an overload to substring() that has a length parameter.
'INV~1105619~43458304~~1913216023~0444857'.substring
OverloadDefinitions
-------------------
string Substring(int startIndex)
string Substring(int startIndex, int length)
$startIndex, $length = 22, 10
'INV~1105619~43458304~~1913216023~0444857'.substring($startIndex, $length)
1913216023
dir ('?'*40) | rename-item -newname { $_.name.substring(22,10) } -whatif
What if: Performing the operation "Rename File" on target
"Item: C:\users\admin\foo\INV~1105619~43458304~~1913216023~0444857
Destination: C:\users\admin\foo\1913216023".
I've got a number of files in the following format
I'd like to replace the 3 characters after 60- in ascending order.
I have used the following code to remove the first 28 characters
get-childitem * | rename-item -newname{string.substring(28)}
Then rename using the following
$i = 1
dir | ForEach-Object {$_ | Rename-Item -NewName ('00092-100221-XX-A-233-60-{0:D3} {1}{2}' -f $i++, $.BaseName, $.Extension)}
However I end up losing the original file order. Is there a way I can rename these files by keeping the original file order and also maybe less time consuming?
You can do all in one step, thus preserving the original file order:
$script:i = 1
Get-ChildItem | Rename-Item -NewName {
'00092-100221-XX-A-233-60-{0:D3}{1}' -f $script:i++, $_.Name.SubString(28)
}
(Note that I excplicitly specified the scope for $i, otherwise the value wouldn't be increased.)
I am able to bulk rename files in a directory OR substitute each file name with a count, however I need both combined.
Bulk rename (keep first 2 charachters of original name):
Get-ChildItem * |
Rename-Item -NewName { $_.BaseName.Split('-')[0] + $_.Extension }
(partially hard coded solution, I know!)
Alternatively, add count:
$count = 1
Get-ChildItem * | % { Rename-Item $_ -NewName (‘{0}.xlsx’ -f $count++) }
(I am not even dreaming about trailing 0s)
I tried to combine both things, but to no avail. What am I doing wrong?
My failed attempt:
$count = 1
Get-ChildItem * |
Rename-Item -NewName { $_.BaseName.Split('-')[0] -f $count++ + $_.Extension }
You're misunderstanding how the format operator works. You need a format string with a placeholder ({0}) in order to make that operator work. I would also recommend putting grouping parentheses around that expression, even though that shouldn't be required in this case. Just to be on the safe side.
('foo {0} bar' -f $some_var) + $other_var
With that said, you apparently want to append the value of the counter variable to the fragment from the original file name rather than using that fragment as a format string. For that you can simply concatenate the counter to the fragment, just like you do with the extension.
For the counter to work correctly you also need to specify the correct scope. The way you're using it defines a new variable $counter in the local scope of the scriptblock every time a file is renamed, so the variable $counter in the parent scope is never incremented. Use the script: or global: scope modifier to get the variable you actually intend to use.
$count = 1
Get-ChildItem * |
Rename-Item -NewName { $_.BaseName.Split('-')[0] + $script:count++ + $_.Extension }
If you do want to use the format operator instead of string concatenation (+) you'd use it like this:
$count = 1
Get-ChildItem * |
Rename-Item -NewName { '{0}{1}{2}' -f $_.BaseName.Split('-')[0], $script:count++, $_.Extension }
To have the $count counted up, you have to go with the loop.
$count = 1
Get-ChildItem * | foreach-object { Rename-Item -NewName { $_.BaseName.Split('-')[0] -f
count++ + $_.Extension } }
% is the alias for the foreach-object cmdlet you used in the "add count" approach.
Just added it to you failed attempt.
I need a way to rename files in a directory that would result in an error with a simple Rename-Item. The files need the same 10 digit code followed by 4 digit place holder (numbers only please).
Current file names:
01_img_0028.JPG
01_img_0029.JPG
02_img_0028.JPG
02_img_0029.JPG
Considering the files above, renaming the files with a split (using the 4 digit in the original name) would fail because there will be files with the same name:
B0000000000.0028.JPG
B0000000000.0029.JPG
B0000000000.0028.JPG
B0000000000.0029.JPG
Does anyone have an idea to get around this? The 4 digits can be any sequence of numbers but it would be great if we could make the end result look like:
B0000000000.0001.JPG
B0000000000.0002.JPG
B0000000000.0003.JPG
B0000000000.0004.JPG
Here is my current code that will rename all unique files and the first of duplicates, but error out on files that would then be duplicate names:
$jpgToRename = GCI -Path $pathToRename -Filter '*.jpg' -R
foreach ($jpg in $jpgToRename) {
$splitPath = $jpg.FullName.Split("\\")
$newName = -join ($splitPath[7], ".", $jpg.BaseName, ".PC_850.jpg")
Rename-Item $jpg.FullName -NewName $newName
}
Using a counter here would keep this simple for your need:
$jpgToRename = GCI -Path $pathToRename -Filter '*.jpg' -R
$counter = 1
foreach($jpg in $jpgToRename){
$splitPath = $jpg.FullName.Split("\\")
$formattedCounter = $counter.ToString("0000")
$newName = -Join($splitPath[7], ".",$formattedCounter, $jpg.BaseName, ".PC_850.jpg")
Rename-Item $jpg.FullName -NewName $newName
$counter++
}