PowerShell 5 - Get Last Reboot for Azure VM

Get-LastRebootTime.ps1

# Function to convert seconds to a readable format
function ConvertToReadableTime {
    param (
        [int]$uptimeSeconds
    )
    $uptime = New-TimeSpan -Seconds $uptimeSeconds
    "{0} days, {1} hours, {2} minutes, {3} seconds" -f $uptime.Days, $uptime.Hours, $uptime.Minutes, $uptime.Seconds
}

# Get the hostname
$hostname = [System.Net.Dns]::GetHostName()

# Get the operating system information
$operatingSystem = Get-CimInstance Win32_OperatingSystem

# Get the uptime in seconds
$uptimeSeconds = $operatingSystem.LastBootUpTime
$uptimeSeconds = (Get-Date) - $uptimeSeconds
$uptimeSeconds = $uptimeSeconds.TotalSeconds

# Convert uptime to a readable format
$uptime = ConvertToReadableTime -uptimeSeconds $uptimeSeconds

# Get the last reboot time
$lastRebootTime = $operatingSystem.LastBootUpTime

# Display the results
Write-Host "Hostname: $hostname"
Write-Host "Uptime: $uptime"
Write-Host "Last Reboot Time: $lastRebootTime"