system_analyse_script.ps1

#Create File only if it does not exist

$reportFile = "D:\PowerShell\SystemReport.txt"

if (!(Test-Path $reportFile))
{
    New-Item -ItemType File $reportFile
}

else
{
    "File Already Exist!"
}

$reportData = @() # Initialize an array to hold report data

$reportData += "=== System Health Report ==="

#Enter a date for report generate

$reportData += "Generated On: $(Get-Date)"

#Disk Usage Data

$reportData += "--- Disk Usage ---"

$reportData += Get-PSDrive -PSProvider FileSystem | Out-String

#CPU Usage Data

$reportData += "`n--- CPU Usage ---"

#Get-CimInstance retrieves system information using CIM (Common Information Model). 
#The Win32_Processor class contains information about the processor(s) on the system, including their name and current load percentage. 
#The output is converted to a string format for easier inclusion in the report.
#PowerShell uses CIM to communicate with Windows Management Instrumentation (WMI), which provides a standardized way to access system information.
$reportData += Get-CimInstance -ClassName Win32_Processor | Out-String

$reportData += Get-CimInstance -ClassName Win32_Processor | Select-Object Name, LoadPercentage | Out-String

#Memory Usage Data

$reportData += "`n--- Memory Usage ---"

# Fetch memory information from the Operating System

$osData = Get-CimInstance -ClassName Win32_OperatingSystem

# Calculate Total and Free Memory in GB (rounding to 2 decimal places)

$totalMemory = [Math]::Round($osData.TotalVisibleMemorySize / 1MB, 2)

$freeMemory = [Math]::Round($osData.FreePhysicalMemory / 1MB, 2)

# Calculate Percentage of Used and Free Memory

$freeMemoryPercentage = [Math]::Round(($freeMemory / $totalMemory) * 100, 2)

$usedMemoryPercentage = 100 - $freeMemoryPercentage

# Display final memory statistics

$reportData += "Memory Usage Summary:"

$reportData += "Used Memory: $usedMemoryPercentage %"

$reportData += "Free Memory: $freeMemoryPercentage %"

#Service Data

$reportData += "`n--- Service's Data ---"

# Get all running services and join their names with a comma

$runningServices = (Get-Service | Where-Object { $_.Status -eq "Running" }).Name -join ", "

# Get all stopped services and join their names with a comma

$stoppedServices = (Get-Service | Where-Object { $_.Status -eq "Stopped" }).Name -join ", "

# Output the formatted lists

$reportData += "-- Running Services --"

$reportData += $runningServices

$reportData += "-- Stopped Services --"

$reportData += $stoppedServices

#Write the report data to the file
$reportData | Set-Content $reportFile