Hi I'm trying to change the letters in various files (which I have in listed in a text file) I can go through the files individually using the command below, but I was wondering if there's a way to loop through the list amending each of the file contents.
example I'd like to change test-pop-test to test-bar-test and this is the content of several files, not the name of the file.
The code I am using is below, amending the names before running.
(Get-Content c:\temp\list.txt) | ForEach-Object { $_ -replace "pop", "bar" } | Set-Content c:\temp\test2.txt
Each object is a text file that I would like it to loop through, so list.txt contains a list of text files where the contents are to be amended, not sure if I explained this very well.. :)
Thanks in advance :)
A basic example:
$Temp = Get-ChildItem C:\Temp -Force
ForEach ($f in $Temp)
{
(Get-Content $f) |
% { $_ -replace 'pop', 'bar' } |
Set-Content $f
}
Related
SHORT: I am trying to duplicate lines in all files in a folder based on a certain string and then replace original strings in duplicated lines only.
Contents of the original text file (there are double quotes in the file):
"K:\FILE1.ini"
"K:\FILE1.cfg"
"K:\FILE100.cfg"
I want to duplicate the entire line 4 times only if a string ".ini" is present in a line.
After duplicating the line, I want to change the string in those duplicated lines (original line stays the same) to: for example, ".inf", ".bat", ".cmd", ".mov".
So the expected result of the script is as follows:
"K:\FILE1.ini"
"K:\FILE1.inf"
"K:\FILE1.bat"
"K:\FILE1.cmd"
"K:\FILE1.mov"
"K:\FILE1.cfg"
"K:\FILE100.cfg"
Those files are small, so using streams is not neccessary.
I am at the beginning of my PowerShell journey, but thanks to this community, I already know how to replace string in files recursively:
$directory = "K:\PS"
Get-ChildItem $directory -file -recurse -include *.txt |
ForEach-Object {
(Get-Content $_.FullName) -replace ".ini",".inf" |
Set-Content $_.FullName
}
but I have no idea how to duplicate certain lines multiple times and handle multiple string replacements in those duplicated lines.
Yet ;)
Could point me in the right direction?
To achieve this with the operator -replace you can do:
#Define strings to replace pattern with
$2replace = #('.inf','.bat','.cmd','.mov','.ini')
#Get files, use filter instead of include = faster
get-childitem -path [path] -recurse -filter '*.txt' | %{
$cFile = $_
#add new strings to array newData
$newData = #(
#Read file
get-content $_.fullname | %{
#If line matches .ini
If ($_ -match '\.ini'){
$cstring = $_
#Add new strings
$2replace | %{
#Output new strings
$cstring -replace '\.ini',$_
}
}
#output current string
Else{
$_
}
}
)
#Write to disk
$newData | set-content $cFile.fullname
}
This gives you the following output:
$newdata
"K:\FILE1.inf"
"K:\FILE1.bat"
"K:\FILE1.cmd"
"K:\FILE1.mov"
"K:\FILE1.ini"
"K:\FILE1.cfg"
"K:\FILE100.cfg"
I have many folders and inside these different files. Each folder and their children files have the same name and different extension, so in the ABC folder there are the ABC.png, ABC.prj, ABC.pgw files, in the DEF folder there are the DEF.png, DEF.prj, DEF.pgw files and so on.
With a script I have created a txt file with the list of png file names. Then I put in row 2 a new name for the name in row1, in row 4 a new name for the name in row 3, and so on.
Now I'm searching a powershell script that:
- scan all folder for the name in row 1 and replace it with name in row2
- scan all folder for the name in row 3 and replace it with name in row4 and so on
I have try with this below, but it doesn't work.
Have you some suggestions? Thank you
$0=0
$1=1
do {
$find=Get-Content C:\1\Srv\MapsName.txt | Select -Index $0
$repl=Get-Content C:\1\Srv\MapsName.txt | Select -Index $1
Get-ChildItem C:\1\newmaps -Recurse | Rename-Item -NewName { $_.name -replace $find, $repl} -verbose
$0=$0+2
$1=$1+2
}
until ($0 -eq "")
I believe there are several things wrong with your code and also the code Manuel gave you.
Although you have a list of old filenames and new filenames, you are not using that in the Get-ChildItem cmdlet, but instead try and replace all files it finds.
Using -replace uses a Regular Expression replace, that means the special character . inside the filename is regarded as Any Character, not simply a dot.
You are trying to find *.png files, but you do not add a -Filter with the Get-ChildItem cmdlet, so now it will return all filetypes.
Anyway, I have a different approach for you:
If your input file C:\1\Srv\MapsName.txt looks anything like this:
picture1.png
ABC_1.png
picture2.png
DEF_1.png
picture3.png
DEF_2.png
The following code will use that to build a lookup Hashtable so it can act on the files mentioned in the input file and leave all others unchanged.
$mapsFile = 'C:\1\Srv\2_MapsName.txt'
$searchPath = 'C:\1\NewMaps'
# Read the input file as an array of strings.
# Every even index contains the file name to search for.
# Every odd index number has the new name for that file.
$lines = Get-Content $mapsFile
# Create a hashtable to store the filename to find
# as Key, and the replacement name as Value
$lookup = #{}
for ($index = 0; $index -lt $lines.Count -1; $index += 2) {
$lookup[$lines[$index]] = $lines[$index + 1]
}
# Next, get a collection of FileInfo objects of *.png files
# If you need to get multiple extensions, remove the -Filter and add -Include '*.png','*.jpg' etc.
$files = Get-ChildItem -Path $searchPath -Filter '*.png' -File -Recurse
foreach ($file in $files) {
# If the file name can be found as Key in the $lookup Hashtable
$find = $file.Name
if ($lookup.ContainsKey($find)) {
# Rename the file with the replacement name in the Value of the lookup table
Write-Host "Renaming '$($file.FullName)' --> $($lookup[$find])"
$file | Rename-Item -NewName $lookup[$find]
}
}
Edit
If the input text file 'C:\1\Srv\MapsName.txt' does NOT contain filenames including their extension, change the final foreach loop into this:
foreach ($file in $files) {
# If the file name can be found as Key in the $lookup Hashtable
# Look for the file name without extension as it is not given in the 'MapsName.txt' file.
$find = [System.IO.Path]::GetFileNameWithoutExtension($file.Name)
if ($lookup.ContainsKey($find)) {
# Rename the file with the replacement name in the Value of the lookup table
# Make sure to add the file's extension if any.
$newName = $lookup[$find] + $file.Extension
Write-Host "Renaming '$($file.FullName)' --> '$newName'"
$file | Rename-Item -NewName $newName
}
}
Hope that helps
The problem in your snippet is that it never ends.
I tried it and it works but keeps looping forever.
I created a folder with the files a.txt, b.txt and c.txt.
And in the map.txt I have this content:
a.txt
a2.md
b.txt
b2.md
c.txt
c2.md
Running the following script I managed to rename every file to be as expected.
$0=0
$1=1
$find=Get-Content D:\map.txt | Select -Index $0
while($find) {
$find=Get-Content D:\map.txt | Select -Index $0
$repl=Get-Content D:\map.txt | Select -Index $1
if(!$find -Or !$repl) {
break;
}
Get-ChildItem D:\Files -Recurse | Rename-Item -NewName { $_.name -replace $find, $repl} -verbose
$0=$0+2
$1=$1+2
}
I found many similar examples but not this exact goal. I have a fairly large number of text files that all have a similar first word (clipxx) where xx is a different number in each file.
I want to rename each file using the first word in the file. Here is what I have tried using Powershell. I get an error that I cannot call a method on a null valued expression.
Get-ChildItem *.avs | ForEach-Object { Rename-Item = Get-Content ($line.Split(" "))[0] }
I'd do this in three parts:
Get the list of files you want to change.
Create and map the new name for each file.
Rename the files.
phase-1: get the list of files you want to change.
$files = Get-ChildItem *.avs
phase-2: map the file name to a new name
$file_map = #()
foreach ($file in $files) {
$file_map += #{
OldName = $file.Fullname
NewName = "{0}.avs" -f $(Get-Content $file.Fullname| select -First 1)
}
}
phase-3: make the name change
$file_map | % { Rename-Item -Path $_.OldName -NewName $_.NewName }
Changing things in a list that you're enumerating can be tricky. That's why I recommend breaking this up.
Here is me running this on my machine...
And, here is what was in my files...
Good Luck
I have limited experience with Powershell doing very basic tasks by itself (such as simple renaming or moving files), but I've never created one that has the need to actually extract information from inside a file and apply that data directly to a file name.
I'd like to create a script that can reference a simple .csv or text file containing a list of unique identifiers and have it assign those to a batch of duplicated files (they all have the same contents) that share a slightly different name in the form of a 3-digit number appended as the prefix of a generic name.
For example, let's say my list of files are something like this:
001_test.txt
002_test.txt
003_test.txt
004_test.txt
005_test.txt
etc.
Then my .csv contains an alphabetical list of what I would like those to become:
Alpha.txt
Beta.txt
Charlie.txt
Delta.txt
Echo.txt
etc.
I tried looking at similar examples, but I'm failing miserably trying to tailor them to get it to do the above.
EDIT: I didn't save what I already modified, but here is the baseline script I was messing with:
$file_server = Read-Host "Enter the file server IP address"
$rootFolder = 'C:\TEMP\GPO\source\5'
Get-ChildItem -LiteralPath $rootFolder -Directory |
Where-Object { $_.Name -as [System.Guid] } |
ForEach-Object {
$directory = $_.FullName
(Get-Content "$directory\gpreport.xml") |
ForEach-Object { $_ -replace "99.999.999.999", $file_server } |
Set-Content "$directory\gpreport.xml"
# ... etc
}
I think this is to replace a string inside a file though. I need to replace the file name itself using a list from another file (that is not getting renamed), while not changing the contents of the files that are being renamed.
So you want to rename similar files with those listed in a text file. Ok, here's what you are going to need for my solution (alias listed in parenthesis): Get-Content (GC), Get-ChildItem (GCI), Where (?), Rename-Item, ForEach (%)
$NewNames = GC c:\temp\Namelist.txt #Path, including file name, to list of new names
$Name = "dog.txt" #File name without the 001_ prefix
$Path = "C:\Temp" #Path to search
$i=0
GCI $path | ?{$_.Name -match "\d{3}_$Name"}|%{Rename-Item $_.FullName $NewNames[$i];$i++}
Tested as working. That gets your list of new names and saves it as an array. Then it defines your file name, path, and sets $i to 0 as a counter. Then for each file that matches your pattern it renames it based off of item number $i in the array of new names, and then increments $i up one number and moves to the next file.
I haven't tested this, but it should be pretty close. It assumes you have a CSV with a column named FileNames and that you have at least as many names in that list as there are on disk.
$newNames = Import-Csv newfilenames.csv | Select -ExpandProperty FileNames
$existingFiles = Get-ChildItem c:\someplace
for ($i = 0; $i -lt $existingFiles.count; $i++)
{
Rename-Item -Path $existingFiles[$i].FullName -NewName $newNames[$i]
}
Basically, you create two arrays and using a basic for loop steping through the list of files on disk and pull the name from the corresponding index in the newNames array.
Does your CSV file map the identifiers to the file names?
Identifier,NewName
001,Alpha
002,Beta
If so, you'll need to look up the identifier before renaming the file:
# Define the naming convention
$Suffix = '_test'
$Extension = 'txt'
# Get the files and what to rename them to
$Files = Get-ChildItem "*$Suffix.$Extension"
$Csv = Import-Csv 'Names.csv'
# Rename the files
foreach ($File in $Files) {
$NewName = ($Csv | Where-Object { $File.Name -match '^' + $_.Identifier } | Select-Object -ExpandProperty NewName)
Rename-Item $File "$NewName.$Extension"
}
If your CSV file is just a sequential list of filenames, logicaldiagram's answer is probably more along the lines of what you're looking for.
I'm trying to find out how to use powershell to find and delete lines without certain string pattern in a set of files. For example, I have the following text file:
111111
22x222
333333
44x444
This needs to be turned into:
22x222
44x444
given that the string pattern of 'x' is not in any of the other lines.
How can I issue such a command in powershell to process a bunch of text files?
thanks.
dir | foreach { $out = cat $_ | select-string x; $out | set-content $_ }
The dir command lists the files in the current directory; the foreach goes through each file; cat reads the file and pipes into select-string; select-string finds the lines that contains the specific pattern, which in this case is "x"; the result of select-string is stored in $out; and finally, $out is written to the same file with set-content.
We need the temporary variable $out because you cannot read and write the same file at the same time.
This will process all txt files from the working directory. Each file content is checked and only lines that have 'x' in them are allowed to pass on. The result is written back to the file.
Get-ChildItem *.txt | ForEach-Object{
$content = Get-Content $_.FullName | Where-Object {$_ -match 'x'}
$content | Out-File $_.FullName
}