Get-Uptime

Here’s a simple function to get a “readable” value of the uptime for the local computer (by default, but there’s a ‘Server’ parameter), and the last boot date/time.

function Get-Uptime {
Param(
    [ValidateScript({Test-Connection -Quiet -ComputerName $_ })]
    $Server=$env:computername
    )

$wmi=Get-WmiObject -Class Win32_OperatingSystem -ComputerName $Server
$lastBoot=$wmi.ConvertToDateTime($wmi.LastBootUpTime)
$up=$wmi.ConvertToDateTime($wmi.LocalDateTime) - $wmi.ConvertToDateTime($wmi.LastBootUpTime)
$d=$up.days
$h=$up.hours
$m=$up.Minutes
$s=$up.Seconds
Write-Host "Uptime: $d Days $h Hours $m Min $s Sec"
Write-Host "Last boot: $lastBoot"
}

 
Usage:

# Get the local computer uptime and last boot time
Get-Uptime
# Get a remote computer uptime and last boot time
Get-Uptime -Server xxx.xxx.xxx.xxx