functions/helpers/Test-CommandExists.ps1
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<#
.SYNOPSIS Test-CommandExists .DESCRIPTION Test-CommandExists .INPUTS Test-CommandExists - The name of Test-CommandExists .OUTPUTS None .EXAMPLE Test-CommandExists .EXAMPLE Test-CommandExists #> function Test-CommandExists() { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] $command ) Write-Verbose 'Test-CommandExists: Starting' # from https://blogs.technet.microsoft.com/heyscriptingguy/2013/02/19/use-a-powershell-function-to-see-if-a-command-exists/ $oldPreference = $ErrorActionPreference $ErrorActionPreference = 'stop' try {if (Get-Command $command) {RETURN $true}} Catch {Write-Information -MessageData "$command does not exist"; RETURN $false} Finally {$ErrorActionPreference = $oldPreference} Write-Verbose 'Test-CommandExists: Done' } Export-ModuleMember -Function "Test-CommandExists" |