public/Get-SerialNumber.ps1

function Get-SerialNumber {
    <#
    .SYNOPSIS
        Gets the serial number of the system.
    .DESCRIPTION
        Gets the serial number of the system.
    .EXAMPLE
        Get-SerialNumber
        Returns the serial number of the system.
    .LINK
        https://github.com/Skatterbrainz/linuxtools/blob/master/docs/Get-SerialNumber.md
    #>

    [CmdletBinding()]
    [OutputType([string])]
    param ()
    try {
        sudo dmidecode -s system-serial-number
    } catch {
        Write-Error $_.Exception.Message
    }
}