DeviceUptime

1.0

DeviceUptime.psm1

Function Get-DeviceUpTime
    {
        param(
        [Switch]$Show_Days,
        [Switch]$Show_Uptime            
        )        
        
        $Last_reboot = Get-ciminstance Win32_OperatingSystem | Select -Exp LastBootUpTime
        $Check_FastBoot = (Get-ItemProperty "HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager\Power" -ea silentlycontinue).HiberbootEnabled 
        If(($Check_FastBoot -eq $null) -or ($Check_FastBoot -eq 0))
            {
                $Boot_Event = Get-WinEvent -ProviderName 'Microsoft-Windows-Kernel-Boot'| where {$_.ID -eq 27 -and $_.message -like "*0x0*"}
                If($Boot_Event -ne $null)
                    {
                        $Last_boot = $Boot_Event[0].TimeCreated
                    }
            }
        ElseIf($Check_FastBoot -eq 1)
            {
                $Boot_Event = Get-WinEvent -ProviderName 'Microsoft-Windows-Kernel-Boot'| where {$_.ID -eq 27 -and $_.message -like "*0x1*"}
                If($Boot_Event -ne $null)
                    {
                        $Last_boot = $Boot_Event[0].TimeCreated
                    }
            }        
            
        If($Last_boot -eq $null)
            {
                $Uptime = $Uptime = $Last_reboot
            }
        Else
            {
                If($Last_reboot -ge $Last_boot)
                    {
                        $Uptime = $Last_reboot
                    }
                Else
                    {
                        $Uptime = $Last_boot
                    }
            }
        
        If($Show_Days)
            {
                $Current_Date = get-date
                $Diff_boot_time = $Current_Date - $Uptime
                $Boot_Uptime_Days = $Diff_boot_time.Days    
                $Real_Uptime = $Boot_Uptime_Days
            }
        ElseIf($Show_Uptime)
            {
                $Real_Uptime = $Uptime
                
            }
        ElseIf(($Show_Days -eq $False) -and ($Show_Uptime -eq $False))
            {
                $Real_Uptime = $Uptime                
            }            
        Return "$Real_Uptime"
    }