Have 2500 pdf files in a folder with fixed length name with a delimiter " _ "
200422028240000148_8393929.pdf
742022028240000014_4366273.pdf
Need to rename with first name available before the delimiter
200422028240000148.pdf
742022028240000014.pdf
How can i do with CMD as well powershell without currupting file and also cant use external utility or tool this being production server
This is really basic PowerShell.
Please, take some time to lookup the workings of Get-ChildItem and Rename-Item to figure out how below code works:
Get-ChildItem -Path 'X:\TheFolder' -Filter '*.pdf' -File | Rename-Item -NewName {
($_.BaseName -split '_')[0] + $_.Extension
}
Related
I'm new to powershell. I want to read names of each file in a folder for eg. 900_CA_2022.pdf, remove the _ from the filename and create a new text file which has name 900CA2022900_CA_2022.txt
Basically, I want to remove the _ from the extension-less file name, append the latter as-is, and use a new extension, .txt
Easiest way is use the same name of source file + .txt for create the text files without doing much damage to the source filenames.
E.g.
900_CA_2022.pdf -----> 900_CA_2022.pdf.txt
My alternative solution
Initial files
Script Code
$files = Get-ChildItem "./*.pdf" -Recurse -Force
$files | ForEach-Object{
New-Item -Path "$($_ | Split-Path)/$($_ | Split-Path -Leaf).txt" -Force
}
Result files
Update:
The stated requirements are unusual, but the next section provides a solution to address them.
The fact that you later accepted Joma's answer indicates that simply appending .txt to each input file name is what you actually needed; this is most easily accomplished as follows:
Get-ChildItem -Filter *.pdf | New-Item -Path { $_.FullName + '.txt' } -WhatIf
Note: The -WhatIf common parameter in the command above previews the operation. Remove -WhatIf once you're sure the operation will do what you want.
Important: All solutions below create the new files in the current directory. If needed, construct the target file path with an explicit directory path, using Join-Path, e.g.:Join-Path C:\target (($_.BaseName -replace '_') + $_.BaseName + '.txt')
To create new, empty files whose names should be derived from the input files, use New-Item:
Get-ChildItem -Filter *.pdf |
New-Item -Path { ($_.BaseName -replace '_') + $_.BaseName + '.txt' } -WhatIf
Note: If the target file exists, an error occurs. If you add -Force, the existing file is truncated instead - use with caution.
$_.BaseName is the input file's name without the extension.
-replace '_' removes all _ chars. from it.
To create new files whose names should be derived from the input files and fill them, use ForEach-Object:
Get-ChildItem -Filter *.pdf |
ForEach-Object {
# Construct the new file path.
$newFilePath = ($_.BaseName -replace '_') + $_.BaseName + '.txt'
# Create and fill the new file.
# `>` acts like Out-File. To control the encoding, use
# something like `| Out-File -Encoding utf8 $newFilePath` instead.
"content for $newFilePath" > $newFilePath
}
Note that > / Out-File and Set-Content (for string data) all quietly replace the contents of an existing target file.
I have a large amount of files in a large amount of folders that I want to set to all have the same file extension. Using this works for single file ext
Get-ChildItem -File -Recurse | ForEach-Object { Rename-Item -Path $_.PSPath -NewName $_.Name.replace(".webp",".jpg")}
But using this for multiple files ext does nothing
Get-ChildItem -File -Recurse | ForEach-Object { Rename-Item -Path $_.PSPath -NewName $_.Name.replace(".jpeg.png.webp",".jpg")}
I have tried .* for the file ext to cover all of them and adding spaces between the exts but this does nothing either.
Can someone point out where I am being an idiot?
To avoid renaming parts of the file name that are not the extension, I would advise against using -replace, unless you treat it as it should by escaping the characters that have special meaning for regex (the dot) and by anchoring the string to replace.
Better use a dedicated .Net function:
(Get-ChildItem -Filter '*.jpeg','*.png','*.webp' -File -Recurse) | Rename-Item -NewName {[System.IO.Path]::ChangeExtension($_.Name, ".jpg")}
or if you do want to use -replace:
(Get-ChildItem -Filter '*.jpeg','*.png','*.webp' -File -Recurse) | Rename-Item -NewName { $_.Name -replace '\.(jpeg|png|webp)$', '.jpg' }
Also, by specifying the extensions in the -Filter parameter of Get-ChildItem, you do not iterate all files, eventhough they can have extensions you do not want to rename, plus Get-ChidItem will do its job faster.
You can use | for OR operations.
Get-ChildItem -File -Recurse | Rename-Item -NewName { $_.Name -replace "\.jpeg$|\.png$|\.webp$",".jpg" }
the \. is needed to match a literal ., and the $ is needed to tell the command to only match those three strings when they occur at the end of the filename.
Long story short: need to change multiple file extensions that are . (in Windows, the file extension is just a .) to .csv. I am able to do this in command prompt with this:
ren *. *.csv
But when I try to rename in Powershell, it only changes the first file (result: .csv.csv.csv.csv.csv.csv.csv) while the rest of the files remain untouched. I used this command:
Dir | Rename-Item -NewName { $_.name -replace ".",".csv" }
Can someone explain what I'm doing wrong and how come the first file is being renamed as such? Don't understand why Powershell makes it more complicated since it is based off CMD.
-replace is using regular expression matching where . will match any character so every character is replaced with .csv. Try this to replace *.txt and *.file with *.csv
gci -File | Rename-Item -NewName { $_.name -replace "\.(txt|file)$", ".csv" }
The question has changed. If your files really end in . which I can't actually reproduce then -replace "\.$", ".csv" where \. matches a literal dot and $ matches the end of the line.
If your files have no extension at all then you could do -replace "$", ".csv"
Or you could filter for files with no extension and just add one
gci -File |? Extension -eq '' |% { Rename-Item $_.FullName -NewName "$($_).csv" }
Get-ChildItem -Path C:\ -File | ForEach {Rename-Item $_.FullName -NewName ($_.name).Replace(".txt",".csv")}
Using dot notation, it reads characters as such; meaning no need in escaping any special chars.
I have a folder containing multiple .txt files which have been created by another program. However the program outputs each file with "-Module" in the
filename. eg
filename-Module.txt
filename1-Module.txt
filename2-Module.txt
I would like to know if there's a script or command (Powershell/cmd) that I can run which will iterate over each file and remove the "-Module" from each filename so I simply end up with
filename.txt
filename1.txt
filename2.txt
I have tried using cmd from the directory, with the following:
rename *-Module.txt *txt
This resulted in no change.
You can use get-childitem and pipe it into rename-item.
get-childitem -path 'c:\folderwherefilesarelocated' -recurse |
rename-item -newname {$_.Name -replace "-module", ""}
Relatively straightforward:
Get-ChildItem ComputerName\TestLocation\testfolder -filter "*-module*" | Rename-Item -NewName {$_.name -replace '-module', ''}
Get the items in the folder, look for filenames with "-module" in them, and then replace the "-module" text with an empty string. You can also append a -whatif to see the output before performing this action.
I want to replace bad characters in filenames within all sub-directories. However due to limitation of rename-item with '[' (wild cards) I have to use the
-LiteralPath in the command. This means I'm having issues with running this with sub-directories.
The code below works on current directory, but I cannot work out how to adapt this code to rename files within all sub-directories. Please help?
ls *.* -recurse | % { Move-Item -literalpath $_.fullname `
($_.name -replace "[()\[\]]|\.(?!\w{3}$)", " ") }
Your RegEx will remove the dot's from extensions with not exactly 3 chars.
.h
.cs
.html
I suggest replacing in BaseName and append the extension and only if brackets/parentheses/dots chars are present.
Get-ChildItem *.* -Recurse -File|
Where-Object {$_.BaseName -match '[()\[\]\.]'}|
Rename-Item -NewName {($_.BaseName -replace '[()\[\]\.]',' ')+$_.Extension} -Whatif
Remove the -WhatIf if the output looks OK.