Script - Restart-UptimeComputers

TL:DR

The script checks to see if a computer’s uptime is greater-than-or-equal-to a variable of days you specify. If it is, then it schedules a time (in 24-hour time) to restart the next day.

The Script

My friend and co-worker Rachel Catches-Ford and I came up with this little solution in PowerShell, with some searching on Stack Exchange for how to schedule a restart on the next day.

Link to Github: https://github.com/RachelCatchesFord/Restart-UptimeComputers

Param(
    [parameter(Mandatory)][int]$Days,
    [parameter(Mandatory)][int]$Time
)

$OS = Get-wmiobject Win32_OperatingSystem
$Uptime = (Get-Date) - $OS.ConvertToDateTime($OS.LastBootUpTime)
[int]$DaysUp = $Uptime.TotalDays

if($DaysUp -ge $Days){
    $SupportGroup = 'OIT DESKSIDE SUPPORT
'
    $Tomorrow = (Get-Date).AddDays(1).Date.AddHours($Time)
    msg.exe * "***$($SupportGroup)*** Your computer has been up for $($DaysUp) Days. Scheduling a restart for $($Tomorrow)."
    shutdown -r -t ([decimal]::round(($Tomorrow - (Get-Date)).TotalSeconds))
}

As you can see, it accepts two parameters, Days and Time. Days is how many days since the last reboot, or uptime. Time is the time you want it to restart the next day.

We use WMI to pull the uptime information from the last boot up time. Then we assign that to a variable that is explicitly marked as an Integer so we can get a nice round number.

Then, we compare the uptime to the parameter for Days and if it’s greater than or equal to it, it’ll schedule a restart for the next day. It also sends out a message letting users know what’s going to happen.