Simple System Health Monitor

# Simple System Health Monitor

function Show-Menu {
    Clear-Host
    Write-Host "=== Simple System Health Monitor ===" -ForegroundColor Cyan
    Write-Host "1. Check CPU Usage"
    Write-Host "2. Check Memory Usage"
    Write-Host "3. Check Disk Space"
    Write-Host "4. List Top 5 CPU-Consuming Processes"
    Write-Host "5. Check System Uptime"
    Write-Host "6. Exit"
}

function Check-CPUUsage {
    $cpu = Get-WmiObject Win32_Processor | Measure-Object -Property LoadPercentage -Average | Select-Object Average
    Write-Host "`nCurrent CPU Usage: $($cpu.Average)%" -ForegroundColor Yellow
}

function Check-MemoryUsage {
    $os = Get-Ciminstance Win32_OperatingSystem
    $totalMemory = [math]::Round($os.TotalVisibleMemorySize / 1MB, 2)
    $freeMemory = [math]::Round($os.FreePhysicalMemory / 1MB, 2)
    $usedMemory = $totalMemory - $freeMemory
    $percentUsed = [math]::Round(($usedMemory / $totalMemory) * 100, 2)

    Write-Host "`nMemory Usage:" -ForegroundColor Yellow
    Write-Host "Total Memory: $totalMemory GB"
    Write-Host "Used Memory: $usedMemory GB"
    Write-Host "Free Memory: $freeMemory GB"
    Write-Host "Percent Used: $percentUsed%"
}

function Check-DiskSpace {
    $disks = Get-WmiObject Win32_LogicalDisk | Where-Object {$_.DriveType -eq 3}
    Write-Host "`nDisk Space:" -ForegroundColor Yellow
    foreach ($disk in $disks) {
        $freeSpace = [math]::Round($disk.FreeSpace / 1GB, 2)
        $totalSpace = [math]::Round($disk.Size / 1GB, 2)
        $usedSpace = $totalSpace - $freeSpace
        $percentFree = [math]::Round(($freeSpace / $totalSpace) * 100, 2)
        
        Write-Host "Drive $($disk.DeviceID):"
        Write-Host "  Total: $totalSpace GB"
        Write-Host "  Used: $usedSpace GB"
        Write-Host "  Free: $freeSpace GB"
        Write-Host "  Percent Free: $percentFree%"
        Write-Host ""
    }
}

function Get-TopCPUProcesses {
    Write-Host "`nTop 5 CPU-Consuming Processes:" -ForegroundColor Yellow
    Get-Process | Sort-Object CPU -Descending | Select-Object -First 5 | 
        Format-Table Name, @{Name='CPU (s)'; Expression={$_.CPU.ToString('N2')}}, @{Name='Memory (MB)'; Expression={[math]::Round($_.WorkingSet / 1MB, 2)}} -AutoSize
}

function Check-Uptime {
    $uptime = (Get-Date) - (Get-CimInstance Win32_OperatingSystem).LastBootUpTime
    Write-Host "`nSystem Uptime: $($uptime.Days) days, $($uptime.Hours) hours, $($uptime.Minutes) minutes" -ForegroundColor Yellow
}

do {
    Show-Menu
    $choice = Read-Host "`nEnter your choice (1-6)"

    switch ($choice) {
        "1" { Check-CPUUsage }
        "2" { Check-MemoryUsage }
        "3" { Check-DiskSpace }
        "4" { Get-TopCPUProcesses }
        "5" { Check-Uptime }
        "6" { Write-Host "Exiting program..." -ForegroundColor Yellow; break }
        default { Write-Host "Invalid choice. Please try again." -ForegroundColor Red }
    }

    if ($choice -ne "6") {
        Read-Host "`nPress Enter to continue..."
    }
} while ($choice -ne "6")

This System Health Monitor includes:

1. A menu with 6 options
2. Functions for various system health checks:
   • Checking CPU usage
   • Checking memory usage
   • Checking disk space
   • Listing top CPU-consuming processes
   • Checking system uptime
3. Use of PowerShell cmdlets like Get-WmiObject, Get-CimInstance, and Get-Process
4. Basic calculations for memory and disk usage percentages
5. Formatted output for better readability

This tool provides a quick overview of essential system health metrics. It’s useful for:

• Monitoring system performance
• Identifying potential resource bottlenecks
• Checking available disk space
• Identifying processes that are consuming high CPU
• Determining how long the system has been running

This script is suitable for users who want to perform basic system health checks without needing to navigate through multiple system tools or commands. It provides a simple interface for accessing important system information quickly and easily.