PowerShell is one of my most powerful tools as a System Administrator. At IDEX, I've built a suite of scripts that handle system audits, security checks, and preventive maintenance — saving hours of manual work every week.

System Audit Script

This script collects critical system information across all managed servers:

# System Audit Script
$Servers = Get-Content "C:\Scripts\servers.txt"

foreach ($Server in $Servers) {
    try {
        $OS = Get-CimInstance -ClassName Win32_OperatingSystem -ComputerName $Server
        $Disk = Get-CimInstance -ClassName Win32_LogicalDisk -ComputerName $Server -Filter "DriveType=3"
        
        Write-Host "=== $Server ===" -ForegroundColor Cyan
        Write-Host "OS: $($OS.Caption)"
        Write-Host "Uptime: $((Get-Date) - ($OS.LastBootUpTime))"
        
        foreach ($d in $Disk) {
            $Used = [math]::Round(($d.Size - $d.FreeSpace) / 1GB, 2)
            $Total = [math]::Round($d.Size / 1GB, 2)
            Write-Host "Disk $($d.Name): $Used GB / $Total GB"
        }
    } catch {
        Write-Host "$Server - Offline or unreachable" -ForegroundColor Red
    }
}

Security Check Script

Regular security audits are essential. This script checks for common vulnerabilities:

# Security Audit
$Results = @()

# Check for critical Windows updates
$Session = New-Object -ComObject Microsoft.Update.Session
$Searcher = $Session.CreateUpdateSearcher()
$PendingReboot = (Get-ItemProperty "HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager").PendingFileRenameOperations -ne $null

if ($PendingReboot) {
    Write-Host "[WARNING] Pending reboot detected!" -ForegroundColor Yellow
}

# Check for disabled security services
$Services = Get-Service | Where-Object {$_.DisplayName -match "Defender|Firewall|Update"}
$Services | Format-Table Name, Status, StartType

Preventive Maintenance

I schedule these scripts via Task Scheduler for regular maintenance:

  • Daily — Disk space monitoring and log cleanup
  • Weekly — Full system audit report generation
  • Monthly — Security patch compliance check
"Automation doesn't replace administrators — it frees them to focus on strategic projects."

Tips for PowerShell Automation

  1. Start small — Automate one task at a time and test thoroughly
  2. Use functions — Break complex scripts into reusable functions
  3. Add logging — Always log what your script does for troubleshooting
  4. Error handling — Use try/catch blocks to handle failures gracefully

Conclusion

The scripts I've built have become indispensable tools in my daily workflow. Whether it's auditing systems, checking security compliance, or automating deployments — PowerShell is the key to efficient IT administration.