Doing a variable substitution and saving the files - powershell

Question

I want it to go though some folders recursivly, find all files with certain endings, and then go through found files to do the subsitute and then save. I can make it work when I have a given filename, but I seem to be haveing some trouble when it comes to the unknown.
The thought is to read the variables for a given environment from a file and save it into PowerShell as variables (this part seems to work, so I've not mentioned it again), then simply substitute the mentioned variables in a set of unknown files.
I've been looking at this question, which seemed to have something of a similar problem, except that I'm trying to use a variable substitusion. Also looked at some previous answer for replace, but again, this is not replace, but variable substitution, so it seems to work a bit differently. So with that in mind, this is what I got so far:
After looking at the examples in the first link:
Get-ChildItem -Path .\ -Include *.ini,*.exe.config -Recurse | %{ gc $_ } | %{
$ExecutionContext.InvokeCommand.ExpandString($_) +
(Get-Content $_.FullName | Out-String ) | Set-Content -Path $_.FullName
}
After trying to do something with the second link:
$places = 'C:\Users\Roger\Documents\test\Program Files (x86)'
$places |
Get-ChildItem -Recurse -Include *.ini,*.config |
ForEach-Object {
(Get-Content $_) | % {
$ExecutionContext.InvokeCommand.ExpandString($_) |
Set-Content $_
'Processed: {0}' -f $_.FullName
}
}
And of course my own feeble attempts:
Get-ChildItem .\ -Include *.ini,*.exe.config -Recurse | %{ gc $_ } | %{
$ExecutionContext.InvokeCommand.ExpandString($_)
} | Set-Content $_.FullName

Answer 1

$places = 'C:\temp'
$places |
Get-ChildItem -Recurse -Include *.ini,*.config | ForEach-Object {
(Get-Content $_) | ForEach-Object {
$ExecutionContext.InvokeCommand.ExpandString($_)
} | Set-Content $_
'Processed: {0}' -f $_.FullName
}
Move the Set-Content out of the inside ForEach-Object. Set-Content would have been trying to fire for each line using the current line as its name as you have seen. Also, for yours and others sanity, you should try and be consistent with using aliases or not. I see both ForEach-Object and % which could be confusing to new users.