Get full path of the files in PowerShell

I need to get all the files including the files present in the subfolders that belong to a particular type.

I am doing something like this, using Get-ChildItem:

Get-ChildItem "C:\windows\System32" -Recurse | where {$_.extension -eq ".txt"}

However, it's only returning me the files names and not the entire path.

Add | select FullName to the end of your line above. If you need to actually do something with that afterwards, you might have to pipe it into a foreach loop, like so:

get-childitem "C:\windows\System32" -recurse | where {$_.extension -eq ".txt"} | % {
     Write-Host $_.FullName
}

This should perform much faster than using late filtering:

Get-ChildItem C:\WINDOWS\System32 -Filter *.txt -Recurse | % { $_.FullName }

You can also use Select-Object like so:

Get-ChildItem "C:\WINDOWS\System32" *.txt -Recurse | Select-Object FullName