Append file name using CSV - powershell

Question

I'm trying to rename files that match values in column one of a csv adding the value in column 3 to the beginning of the file name leaving the rest of the file name intact. Here is what I have so far. I cant seem to figure out the Rename-Item.
# Common Paths
$PathRoot = "C:\Temp\somefiles" #Where the files are to rename
# Get csv file
$ClientAccounts = Import-CSV -path "\\server\some\path\to\csv\file.csv"
# Get each file and rename it
ForEach($row in $ClientAccounts)
{
$CurrentClientTaxId = $row[-1].TaxId
$CurrentClientName = $row[-1].ClientName
#loop through files
$FileExists = Test-Path -Path "$PathTotal\*$CurrentClientLB_Number*" #See if there is a file.
If ($FileExists -eq $true) #The file does exist.
{
#ReName File
Rename-Item -Path $PathRoot -NewName {$CurrentClientName + " " + $_.name}
}
}

Answer 1

Lets suppose your CSV file looks similar to this:
"LB_Number","TaxId","ClientName"
"987654","12345","Microsoft"
"321456","91234","Apple"
"741852","81234","HP"
Column 1 has the portion of the existing file name to match
Column 3 has the client name you want to prepend to the file name
Then your function could be something like this:
# Common Paths
$PathRoot = "C:\Temp\somefiles" # Where the files are to rename
# Get csv file
$ClientAccounts = Import-CSV -path "\\server\some\path\to\csv\file.csv"
# Loop through all clients in the CSV
foreach($client in $ClientAccounts) {
$CurrentClientLB_Number = $client.LB_Number
$CurrentClientTaxId = $client.TaxId # unused...??
$CurrentClientName = $client.ClientName
# get the file(s) using wildcards (there can be more than one)
# and rename them
Get-ChildItem -Path "$PathRoot\*$CurrentClientLB_Number*" -File | ForEach-Object {
$_ | Rename-Item -NewName ($CurrentClientName + " " + $_.Name)
}
# Curly braces work also, although this is not very common practice:
# Get-ChildItem -Path "$PathRoot\*$CurrentClientLB_Number*" -File |
# Rename-Item -NewName { ($CurrentClientName + " " + $_.Name) }
}
I use the -File parameter with Get-ChildItem so the function will only return files; not directories. If you are using PowerShell version 2.0, you need to replace that with | Where-Object { !$_.PSIsContainer }.