Generate a random string.

Generate-RandomString.ps1

Function Get-RandomString {
    Param(
        [Int] $Length = 10,
        [Bool] $IncludeNumerical = $True,
        [Bool] $IncludeLowerCase = $True,
        [Bool] $IncludeUpperCase = $True
    )

    $Local:NumericalSet = (48..57)
    $Local:LowerCaseSet = (65..90)
    $Local:UpperCaseSet = (97..122)

    $Local:Set = $null

    If ($IncludeNumerical) {
        $Local:Set += $Local:NumericalSet
    }

    If ($IncludeLowerCase) {
        $Local:Set += $Local:LowerCaseSet
    }

    If ($IncludeUpperCase) {
        $Local:Set += $Local:UpperCaseSet
    }

    If ($Local:Set.Length -Eq 0) {
        Throw "Set cannot be empty! Cannot generate a string from nothing..."
    }

    Return (-join ((1..$Length) | % { $Local:Set | Get-Random } | % {[char]$_}))
}