Generates a random password

New-RandomPassword.ps1

function New-RandomPassword {
  <#
    .SYNOPSIS
    Generates a random password.
  
    .DESCRIPTION
    Generates a random password that is $Length characters long and
    contains a minimum of $MinSpecial special characters.
  
    .PARAMETER Lenth
    The character length of the password to generate. Length given must
    be between 8 and 100. Default is 25.
  
    .PARAMETER MinSpecial
    The _minimum_ number of special characters that the password should
    contain. Default is 7.
    
    .PARAMETER Count
    The number of passwords to generate. Default is 1.
    
    .EXAMPLE
    PS C:\> New-RandomPassword
    i*^4P0_|aj&e$}QYNUgs4gq4h
    
    The example above generates a single, 25 character random password with
    a minimum of 7 special characters.
    
    .EXAMPLE
    PS C:\> New-RandomPassword 12 4 5
    iW9#+L^PuDr%
    ?!doG*lE_0xM
    3!IoNU:xNc]>
    i!g/8)933ht>
    ;!bmj_d{tKKA
    
    The example above generates 5 random passwords, with a character length 
    of 12, and a minimum special character count of 4.    
  #>
  param(
    [Parameter( Position = 0)]
    [ValidateRange(8,100)]
    [Alias('l')]
    [int] $Length = 25,
    
    [Parameter( Position = 1)]
    [Alias('s')]
    [int] $MinSpecial = 7,
    
    [Parameter( Position = 2)]
    [ValidateScript({ $_ -gt 0 })]
    [Alias('c')]
    [int] $Count = 1
  )
  begin {
    $null = [Reflection.Assembly]::LoadWithPartialName('system.web')
  }
  
  process {
    for ($i=1;$i -le $Count; $i++) {
      Write-Output $([System.Web.Security.Membership]::GeneratePassword($Length,$MinSpecial))
    }
  }
}