Chapters/going-deeper-with-parameters/snippets.ps1
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# same thing: Get-Service -Name BITS Get-Service BITS # view help Help get-service # quick example function test { param( [string[]]$one, [int]$two, [switch]$three ) } help test -Full # assigned positions function test { param( [Parameter(Position=1)] [string[]]$one, [Parameter(Position=2)] [int]$two, [Parameter(Position=3)] [switch]$three ) } help test -Full # assign to parameter set [Parameter(ParameterSetName="query")] [string]$query # membership in multiple sets [Parameter(ParameterSetName="one")] [Parameter(ParameterSetName="two")] [string]$something # default parameter set [CmdletBinding(DefaultParameterSetName="whatever")] # values from remaining [Parameter(ValueFromRemainingArguments=$True)] [string]$Extras # help message [Parameter(HelpMessage="Enter a computer name or IP")] [string[]]$ComputerName # alias [Alias("cn")] [string[]]$Computername # example (complete file is in sample code) [cmdletbinding(DefaultParameterSetName = "name")] Param( [Parameter(Position = 0, Mandatory, HelpMessage = "Enter a computer name to check", ParameterSetName = "name", ValueFromPipeline)] [Alias("cn")] [ValidateNotNullorEmpty()] [string[]]$Computername, [Parameter(Mandatory, HelpMessage = "Enter the path to a text file of computer names", ParameterSetName = "file" )] [ValidateScript({ if (Test-Path $_) { $True } else { Throw "Cannot validate path $_" } })] [ValidatePattern("\.txt$")] [string]$Path, [ValidateRange(10,50)] [int]$Threshhold = 25, [ValidateSet("C:","D:","E:","F:")] [string]$Drive = "C:", [switch]$Test ) # example of path validation [ValidateScript({Test-Path $_)} |