function Get-Parameter ($Cmdlet) {
foreach ($paramset in (Get-Command $Cmdlet).ParameterSets){
$Output = @()
foreach ($paramset in (Get-Command $Cmdlet).ParameterSets){
$Output = @()
foreach ($param in $paramset.Parameters) {
$process = “” | Select-Object Name, ParameterSet, Aliases, IsMandatory, CommonParameter
$process.Name = $param.Name
if ( $paramset.name -eq “__AllParameterSets” ) { $process.ParameterSet = “Default” }
else { $process.ParameterSet = $paramset.Name }
$process.Aliases = $param.aliases
$process.IsMandatory = $param.IsMandatory
if ($param.aliases -match “vb|db|ea|wa|ev|wv|ov|ob”) { $process.CommonParameter = $TRUE }
else { $process.CommonParameter = $FALSE }
$output += $process
}
Write-Output $Output
Write-Host “`n”
}

Still no luck

#added to profile
function gpm ($Cmdlet) { Get-Parameter $Cmdlet | ft name,type,is*,pipe* -GroupBy parameterset -AutoSize }

#ps1 file
function Get-Parameter ( $Cmdlet, [switch]$ShowCommon, [switch]$Full ) {

$command = Get-Command $Cmdlet -ea silentlycontinue

# resolve aliases (an alias can point to another alias)
while ($command.CommandType -eq “Alias”) {
$command = Get-Command ($command.definition)
}
if (-not $command) { return }

foreach ($paramset in $command.ParameterSets){
$Output = @()
foreach ($param in $paramset.Parameters) {
if ( ! $ShowCommon ) {
if ($param.aliases -match “vb|db|ea|wa|ev|wv|ov|ob|wi|cf”) { continue }
}
$process = “” | Select-Object Name, Type, ParameterSet, Aliases, Position, IsMandatory,
Pipeline, PipelineByPropertyName
$process.Name = $param.Name
if ( $param.ParameterType.Name -eq “SwitchParameter” ) {
$process.Type = “Boolean”
}
else {
switch -regex ( $param.ParameterType ) {
“Nullable“1\[(.+)\]” { $process.Type = $matches[1].Split(‘.’)[-1] + ” (nullable)” ; break }
default { $process.Type = $param.ParameterType.Name }
}
}
if ( $paramset.name -eq “__AllParameterSets” ) { $process.ParameterSet = “Default” }
else { $process.ParameterSet = $paramset.Name }
$process.Aliases = $param.aliases
if ( $param.Position -lt 0 ) { $process.Position = $null }
else { $process.Position = $param.Position }
$process.IsMandatory = $param.IsMandatory
$process.Pipeline = $param.ValueFromPipeline
$process.PipelineByPropertyName = $param.ValueFromPipelineByPropertyName
$output += $process
}
if ( ! $Full ) {
$Output | Select-Object Name, Type, ParameterSet, IsMandatory, Pipeline
}
else { Write-Output $Output }
}
}

To be honest I don’t know if I got this to work or if I just skipped this part in the book

Kenneth

Have you had any luck with this?. I am having the same issue – no output!
I am running : .\Get-Parameter.ps1 Get-EventLog

Thanks
Brian

My problem now is that the script won’t give me any output at all.
For example: .\Get-Parameter.ps1 get-eventlog

doesn’t show me anything. I’ve tried different kinds of approaches but never got the output as shown in the book.

Please advice in what I am doing wrong here?

Many Thanks!
Kenneth

Nice script! I tweaked it a little to handle aliases (including aliases to aliases). (v.91)

- Oisin