Add-TrustedHost.ps1
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<#
.SYNOPSIS Adds trusted hosts. Only unique hosts are added (i.e. hosts will not be added if they already exist). .DESCRIPTION Converts the trusted hosts to comma seperated string and appends them to the WSMan:\localhost\Client\TrustedHosts value. .PARAMETER Computer Specifies the trusted hosts to be added. This parameter is required and cannot be null, empty, or blank. .EXAMPLE Add-TrustedHost 192.168.0.101 Adds 192.168.0.101 to the trusted hosts. .EXAMPLE Add-TrustedHost 192.168.0.101, 192.168.0.102 Adds 192.168.0.101 and 192.168.0.102 to the trusted hosts. .EXAMPLE 101..120 | % { "192.168.0.$_" } | Add-TrustedHost Adds 192.168.0.101 through 192.168.0.120 to the trusted hosts. #> function Add-TrustedHost { [CmdletBinding()] param( [Parameter(ValueFromPipeline=$true)] [String[]] $Computer ) Begin { $trustedHosts = Get-TrustedHost if ($trustedHosts -eq $null) { $trustedHosts = @() } elseif($trustedHosts -is [String]) { $trustedHosts = @(,$trustedHosts) } } Process { # if ($Computer -eq $null -or ($Computer -is [string] -and [string]::IsNullOrWhiteSpace($Computer))) { if ($Computer -eq $null) { Write-Error "'Computer' cannot be null, empty, or white space." } foreach ($c in ($Computer)) { if ([string]::IsNullOrWhiteSpace($c)) { Write-Error "'Computer' cannot be null, empty, or white space." } elseif ($trustedHosts -notcontains $c) { $trustedHosts += $c } } } End { Set-Item WSMan:\localhost\Client\TrustedHosts -Value ($trustedHosts -join ',' ) -Force } } |