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Saturday, December 13, 2014

List the Impact Level of all PowerShell Commands

I took a question fom an IT Professional who needed to know the Impact Level of various PowerShell commands.  The Impact Level works with the  variable $ConfirmPreference.  If a cmdlets Impact Level is equal to or higher than $ConfirmPreference , the user will be prompted to confirm the operation before proceeding. 

Cmdlets and functions store this information in two different places.  For a cmdlet, it is stored in the metadata for the cmdlet. For a function, it is stored in line 2 of the functions scriptblock.  The code below will examine all cmdlets and functions and let you know the impact level of each, if once exists.

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# Check all cmdelts

$Cmdlet = Get-Command -CommandType cmdlet |

    ForEach-Object {

    Try

    {

        $_ | Select-Object -Property @{N = "Command";E={$_.Name}},

            @{N="Impact";E={$_.ImplementingType.GetCustomAttributes($True).confirmimpact}}

    }

    Catch

    {

            $_ | Select-Object -Property @{N = "Command";E={$_.Name}},

            @{N="Impact";E={"Unknown"}}

    }

    }

 

#Check all functoins

$Function = Get-Command -CommandType Function |

    ForEach-Object {

   

        $C = $_.Definition.Split("`n")

        If ($C[1] -like "*ConfirmImpact='High'*")

        {

            $_ | Select-Object -Property @{N = "Command";E={$_.Name}},

            @{N="Impact";E={"High"}}

        }

        ElseIf ($C[1] -like "*ConfirmImpact='Medium'*")

        {

            $_ | Select-Object -Property @{N = "Command";E={$_.Name}},

            @{N="Impact";E={"High"}}

        }

        ElseIf ($C[1] -like "*ConfirmImpact='Low'*")

        {

            $_ | Select-Object -Property @{N = "Command";E={$_.Name}},

            @{N="Impact";E={"Low"}}

        }

         Else

        {

            $_ | Select-Object -Property @{N = "Command";E={$_.Name}},

            @{N="Impact";E={""}}

        }

    }

 

# Combine and sort the results.

$Cmdlet += $Function

$Cmdlet | Sort-Object -Property command

1 comment:

Tahir Hassan said...

Thank you for the information. I wrote a function "Get-ConfirmImpact" that is based on your code:

http://tahirhassan.blogspot.co.uk/2017/01/powershell-get-confirmimpact-function.html