public/Test-Command.ps1
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<#
.Synopsis Test for the presence of a command. .Description Test for the presence of a command, function, or executable. .Example PS C:\> Test-Command -Name packer Tests for the presence of "packer" and returns a boolean. #> function Test-Command { [CmdletBinding()] [OutputType([Boolean])] param ( # The name of the command to test. [Parameter(Mandatory = $true)] [String] $Name ) begin { Write-LogMessage -Message "Started execution" } process { try { Write-LogMessage -Message "Looking for '$Name'." Get-Command -Name $Name -ErrorAction Stop | Out-Null return $true } catch { Write-LogMessage -Message "Couldn't find '$Name'." $global:Error.RemoveAt(0) return $false } } end { Write-LogMessage -Message "Finished execution" } } |