{"id":12396,"date":"2022-09-30T16:03:51","date_gmt":"2022-09-30T10:33:51","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-script-for-renaming-files-in-a-specific-way\/"},"modified":"2022-09-30T16:03:51","modified_gmt":"2022-09-30T10:33:51","slug":"solved-script-for-renaming-files-in-a-specific-way","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-script-for-renaming-files-in-a-specific-way\/","title":{"rendered":"[Solved] Script for renaming files in a specific way"},"content":{"rendered":"

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As commented, it would be a lot simpler if you put the old and new ID values in a CSV file like this:<\/p>\n

\"OldID\",\"NewID\"\n\"12345\",\"98765\"\n\"23456\",\"87654\"\n\"34567\",\"76543\"\n<\/code><\/pre>\n
Then, something like below should work:<\/p>\n
# read this CSV to get an array of PSObjects\n$ids = Import-CSV -Path 'D:\\ReplaceId.csv'\n\n# build a lookup table from the $ids variable\n$hash = @{}\n$ids | ForEach-Object { $hash[$_.OldID] = $_.NewID }\n\n# next, get a list of all files that have names starting with any \n# of the 5 digits from column 'OldID' and loop through\nGet-ChildItem -Path 'THE PATH TO YOUR DIRECTORY' -Filter '*.pdf' -File | \n    Where-Object { $hash.Keys -contains $_.Name.Substring(0,5) } | \n    ForEach-Object {\n        # get the value for the new ID from the lookup hashtable\n        # and combine it with the remainder of the filename\n        $newName=\"{0}{1}\" -f $hash[$($_.Name.Substring(0,5))], $_.Name.Substring(5)\n        $_ | Rename-Item -NewName $newName -WhatIf\n    }\n<\/code><\/pre>\n
If the console info shows the correct replacement names, remove the -WhatIf<\/code> switch to actually start renaming the files<\/p>\n
If you add the -Recurse<\/code> switch to the Get-ChildItem<\/code> cmdlet, the code will also rename files inside any subfolder.<\/p>\n<\/p>\n
\n
Update<\/strong><\/p>\n
\n
Of course, the above assumes there is no mix<\/strong> of Old and New Id numbers in the folder. Since you commented that this is the case you will get file already exists<\/em> errors.
\nTo overcome that, you need to make sure the new filenames are unique inside the folder. You can do that for instance like this.<\/p>\n
It appends an index number between brackets to the name if a file with that name already exists.<\/p>\n
Get-ChildItem -Path 'D:\\Test' -Filter '*.pdf' -File | \n    Where-Object { $hash.Keys -contains $_.Name.Substring(0,5) } | \n    ForEach-Object {\n        # get the value for the new ID from the lookup hashtable\n        # and combine it with the remainder of the filename\n        $newId = $hash[$($_.Name.Substring(0,5))]\n        $newName=\"{0}{1}\" -f $newId, $_.Name.Substring(5)\n        # since a filename with the new ID may already exist, \n        # you need to create a unique filename by appending an indexnumber\n        $fullName = Join-Path -Path $_.DirectoryName -ChildPath $newName\n        $index = 1\n        while (Test-Path -Path $fullName -PathType Leaf) {\n            $newName=\"{0}{1}({2}){3}\" -f $newId, $_.BaseName.Substring(5), $index++, $_.Extension\n            $fullName = Join-Path -Path $_.DirectoryName -ChildPath $newName\n        }\n        $_ | Rename-Item -NewName $newName -WhatIf\n    }\n<\/code><\/pre>\n
Before:<\/strong><\/p>\n
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D:\\TEST\n    12345_id_user.pdf\n    12345_id_user2.pdf\n    12345_id_user3.pdf\n    23456_id_user.pdf\n    34567_id_user.pdf\n    34567_id_user2.pdf\n    76543_id_user2.pdf\n    98765_id_user.pdf\n<\/code><\/pre>\n<\/blockquote>\n
After:<\/strong><\/p>\n
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D:\\TEST\n    76543_id_user.pdf\n    76543_id_user2(1).pdf\n    76543_id_user2.pdf\n    87654_id_user.pdf\n    98765_id_user(1).pdf\n    98765_id_user.pdf\n    98765_id_user2.pdf\n    98765_id_user3.pdf\n<\/code><\/pre>\n<\/blockquote>\n
Or<\/strong> if you want to increase the index number you already seem to apply, use this:<\/p>\n
Get-ChildItem -Path 'D:\\Test' -Filter '*.pdf' -File | \n    Where-Object { $hash.Keys -contains $_.Name.Substring(0,5) } | \n    ForEach-Object {\n        # get the value for the new ID from the lookup hashtable\n        # and combine it with the remainder of the filename\n        $newId    = $hash[$($_.Name.Substring(0,5))]\n        $newName=\"{0}{1}\" -f $newId, $_.Name.Substring(5)\n        # since a filename with the new ID may already exist, \n        # you need to create a unique filename by incrementing the indexnumber\n\n        # get the basename of the new name without any index numbers at the end\n        $baseName  = [System.IO.Path]::GetFileNameWithoutExtension($newName) -replace '\\d+$'\n        $extension = $_.Extension\n        # get an array of all file and folder names of items with a similar name already present in the folder\n        $similar = @(Get-ChildItem $_.DirectoryName -Filter \"$baseName*$extension\" | Select-Object -ExpandProperty Name)\n        $index = 1\n        while ($similar -contains $newName) {\n            $newName=\"{0}{1}{2}\" -f $baseName, $index++, $extension\n        }\n\n        $_ | Rename-Item -NewName $newName -WhatIf\n    }\n<\/code><\/pre>\n
Before:<\/strong><\/p>\n
\n
D:\\TEST\n    12345_id_user.pdf\n    12345_id_user2.pdf\n    12345_id_user3.pdf\n    23456_id_user.pdf\n    34567_id_user.pdf\n    34567_id_user2.pdf\n    76543_id_user2.pdf\n    98765_id_user.pdf\n<\/code><\/pre>\n<\/blockquote>\n
After:<\/strong><\/p>\n
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D:\\TEST\n    76543_id_user.pdf\n    76543_id_user1.pdf\n    76543_id_user2.pdf\n    87654_id_user.pdf\n    98765_id_user.pdf\n    98765_id_user1.pdf\n    98765_id_user2.pdf\n    98765_id_user3.pdf\n<\/code><\/pre>\n<\/blockquote><\/div>\n
<\/div>\n<\/div>\n
            5<\/span> <\/p><\/div>\n<\/div>\n
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solved Script for renaming files in a specific way <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] As commented, it would be a lot simpler if you put the old and new ID values in a CSV file like this: “OldID”,”NewID” “12345”,”98765″ “23456”,”87654″ “34567”,”76543″ Then, something like below should work: # read this CSV to get an array of PSObjects $ids = Import-CSV -Path ‘D:\\ReplaceId.csv’ # build a lookup table from … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[1153,1212,1080],"class_list":["post-12396","post","type-post","status-publish","format-standard","hentry","category-solved","tag-powershell","tag-replace","tag-text"],"yoast_head":"\n[Solved] Script for renaming files in a specific way - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-script-for-renaming-files-in-a-specific-way\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Script for renaming files in a specific way - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] As commented, it would be a lot simpler if you put the old and new ID values in a CSV file like this: "OldID","NewID" "12345","98765" "23456","87654" "34567","76543" Then, something like below should work: # read this CSV to get an array of PSObjects $ids = Import-CSV -Path 'D:ReplaceId.csv' # build a lookup table from ... 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