Powershell Script: Search for BATs with specific name and run them-CodePudding

back with another request to try and make my life a little easier. The problem: one of the programs I use deposits BMPs (yes, bitmaps, this is an ancient app, and no, I can't configure it not to make BMPs) where I don't need them. I've got a BAT file that can sweep a folder and remove them, but what I'd really like to do is put a copy of said BAT file in each folder where it leaves them, and then every time I run a backup cycle, have it search for those BAT files, and wherever it finds one, run it. (I'd also need to know how to tell it "look in the same folder you're in"--I think I can do that by something like $searchfolder = "." but please correct me if I'm wrong)

I'm guessing this is a Get-Childitem and ForEach, but I've taken a few stabs at it and it won't work. Does anyone have an idea how to go about it?

This is what I've got so far for the parent script to find all instances of "Clear_BMPs.bat":

Get-ChildItem $sourceDir -Include Clear_BMPs.bat -Recurse | ForEach-Object { call "Clear_BMPs.bat" }

And this is what I've got in the child script, to get rid of the BMPs themselves (the filename for it is "Clear_BMPs.bat":

$searchfile = "*.bmp"
$targetdir = ".\"
Get-ChildItem $targetdir -Include $searchfile | foreach{ "Removing file $($_.FullName)"; Remove-Item -force $_}

I'm still trying to get the Clear_BMPs.bat files to work properly but in my vision it will only search the root of the folder it's in, and not recurse through subdirectories.

CodePudding user response：

Since you're calling from PowerShell, there's no reason to involve batch files, given that the code is under your control.

Indeed, what you show as the content of a Clear_BMPs.bat batch file is PowerShell code, which means you need to store it in a .ps1 file, not a .bat file.

Therefore, your recursive invocation that executes all .ps1 files should look like this:

# Find all 'Clear_BMPs.ps1' scripts in the subdir. tree of $sourceDir
# and invoke them.
Get-ChildItem -Recurse -LiteralPath $sourceDir -Filter Clear_BMPs.ps1 |
  ForEach-Object { & $_.FullName }

And the Clear_BMPs.ps1 files in the various directories should contain:

# Remove all *.bmp files from the same dir. in which this .ps1 script is located.
Remove-Item -Path "$PSScriptRoot/*.bmp"

Note the use of the automatic $PSScriptRoot variable, which refers to the directory in which the enclosing .ps1 file is located.