You want to sign multiple scripts in a folder using the same certificate. Which PowerShell snippet correctly signs all .ps1 files?

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PowerShell - Scripting Best Practices

You want to sign multiple scripts in a folder using the same certificate. Which PowerShell snippet correctly signs all .ps1 files?

AGet-ChildItem -Path . -Filter '*.ps1' | ForEach-Object { Set-AuthenticodeSignature -FilePath $_.FullName -Certificate $cert }

BSet-AuthenticodeSignature -FilePath '*.ps1' -Certificate $cert

CForEach ($file in '*.ps1') { Set-AuthenticodeSignature -FilePath $file -Certificate $cert }

DGet-Content '*.ps1' | Set-AuthenticodeSignature -Certificate $cert

Step-by-Step Solution

Solution:

Step 1: Identify correct way to get all .ps1 files
Get-ChildItem -Filter '*.ps1' lists all script files in the folder.
Step 2: Apply signing to each file
Using ForEach-Object to call Set-AuthenticodeSignature on each file with the certificate is correct.
Step 3: Check other options
Set-AuthenticodeSignature -FilePath '*.ps1' -Certificate $cert tries to sign a wildcard path directly (invalid). ForEach ($file in '*.ps1') { Set-AuthenticodeSignature -FilePath $file -Certificate $cert } treats '*.ps1' as a string list (wrong). Get-Content '*.ps1' | Set-AuthenticodeSignature -Certificate $cert pipes file content, not file paths (wrong).
Final Answer:
Get-ChildItem -Path . -Filter '*.ps1' | ForEach-Object { Set-AuthenticodeSignature -FilePath $_.FullName -Certificate $cert } -> Option A
Quick Check:
Use Get-ChildItem + ForEach-Object to sign all scripts [OK]

Quick Trick: Use Get-ChildItem and ForEach-Object to sign multiple files [OK]

Common Mistakes:

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