Powershell - IO.Directory - Find file types in all subdirectories
.net, powershell
Solution
This will loop through each extension searching for all files in the root and sub-directories. Ensure you have the correct privileges on all the directories especially when you're running from C:\ as the root.
$Extensions = @(".bak",".csv",".txt")
Foreach ( $Extension in $Extensions )
{
[System.IO.Directory]::EnumerateFiles("C:\","*$Extension","AllDirectories")
}
This method will only work with Powershell running .Net 4.0 or higher. To check and update the version of .Net:
$PSVersionTable
Name Value
---- -----
CLRVersion 2.0.50727.4971
BuildVersion 6.1.7600.16385
PSVersion 2.0
WSManStackVersion 2.0
PSCompatibleVersions {1.0, 2.0}
SerializationVersion 1.1.0.1
PSRemotingProtocolVersion 2.1
The CLRVersion value is the .net version.
Update the config file as follows:
$Config = @"
<?xml version="1.0"?>
<configuration>
<startup useLegacyV2RuntimeActivationPolicy="true">
<supportedRuntime version="v4.0.30319"/>
<supportedRuntime version="v2.0.50727"/>
</startup>
</configuration>
"@
$Config > $PSHOME\Powershell.exe.config
Restart the Powershell session and verify the CLRVersion value in the $PSVersionTable variable.
Problem
I ran across this code in another post that almost does what I need, but can't figure out how to modify it to look for specific file types, i.e. *.bak, .txt, etc. I'm using Powershell with [System.IO.DirectoryInfo] because, like others have stated, using Get-ChildItem is too slow across the network. I thought it would just be something like $fileEntries = [IO.Directory]::GetFiles("C:\", ".bak"), but it still returns every file in every directory. --PS/.NET newbie ``` try { $fileEntries = [IO.Directory]::GetFiles("C:\") [System.IO.DirectoryInfo]$directInf = New-Object IO.DirectoryInfo("C:\") $folders = $directInf.GetDirectories() } catch [Exception] { $_.Exception.Message $folders = @() } foreach($fileName in $fileEntries) { #[Console]::WriteLine($fileName); } Remove-Variable -ErrorAction SilentlyContinue -Name fileEntries foreach($folder in $folders) { recurse("C:\" + $folder + "\") } ```