Creates a file with a specified size

New-RandomFile.ps1

function New-RandomFile {
    [CmdletBinding()]
    param (
        # Where the file will be created
        [parameter(Mandatory)]
        $Path,

        # Size of file (tip: use 20mb, 1gb etc.)
        [parameter(Mandatory)]
        [int64]$Size
    )

    Process {
        try {
            $byteArray = New-Object byte[] $Size
            $RandomObject = New-Object -TypeName System.Random
            $RandomObject.NextBytes($byteArray)
            [IO.File]::WriteAllBytes($Path,$byteArray)
        }
        catch {
            Throw "Oops. Something went wrong. $_"
        }
    }
}