functions/Get-WURandomString.ps1
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<#
.SYNOPSIS Get a random string. .DESCRIPTION Get a random string. You can specify the number of characters and character types. .OUTPUTS System.String .EXAMPLE PS C:\>Get-WURandomString -Length 8 Returns a string like '8i60va7z'. .EXAMPLE PS C:\>Get-WURandomString -Length 32 -CharType 'UppercaseAlphabet','Number' Returns a string like '3EU1PZ4YQLC2SIJMON0W8BTG7H5A9X6K'. .EXAMPLE PS C:\>Get-WURandomString -Length 16 -Char '_','@','[',']' Returns a string like 'd[7e3x5wqi8nztl_'. #> [CmdletBinding()] param ( [ValidateNotNull()] [int] # Specify the number of characters to retrieve. $Length, [ValidateSet('Number', 'LowercaseAlphabet', 'UppercaseAlphabet')] [string[]] # Specifies character types. The default value are 'Number', 'LowercaseAlphabet'. $CharType = @('Number', 'LowercaseAlphabet'), [char[]] $Char ) Set-StrictMode -Version 'Latest' $CharTypeRanges = @{ Number = 48..57 LowercaseAlphabet = 97..122 UppercaseAlphabet = 65..90 } $CharRanges = $CharType | ForEach-Object { $CharTypeRanges.$_ } $CharRanges += [int[]]$Char return -join ( $CharRanges | Select-Object -Unique | Get-Random -Count $Length | ForEach-Object { [char]$_ }) |