PowerShell: Function to Confirm Certain Contents

It’s always a good idea to receive user confirmations prior on proceeding to making important changes. Here’s a reusable function to be added to one’s code base for that purpose.

function confirmation($content,$testValue="I confirm",$maxAttempts=3){
        $confirmed=$false;
        $attempts=0;        
        $content|write-host
        write-host "Please review this content for accuracy.`r`n"
        while ($attempts -le $maxAttempts){
            if($attempts++ -ge $maxAttempts){
                write-host "A maximum number of attempts have reached. No confirmations received!`r`n"
                break;
                }
            $userInput = Read-Host -Prompt "Please type in this value => $testValue <= to confirm. Input CANCEL to skip this item.";
            if ($userInput.ToLower() -eq $testValue.ToLower()){
                $confirmed=$true;
                write-host "Confirmed!`r`n";
                break;                
            }elseif($userInput -like 'cancel'){
                write-host 'Cancel command received.'
                $confirmed=$false
                break
            }else{
                cls;
                $content|write-host
                write-host "Attempt number $attempts of $maxAttempts`: $userInput does not match $testValue. Try again or Input CANCEL to skip this item`r`n"
                }
            }
        return $confirmed;
    }

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