Get-SystemInfo.ps1

Function Get-SystemInfo {
    param([Parameter(Mandatory = $true)] $ComputerName, [switch] $IgnorePing)
    $computer = $ComputerName
    $data = @{}
    $data.' ComputerName' = $computer
    $ping = Test-Connection -quiet -count 1 $computer
    $Ping = $(if ($ping) { 'Yes' }else { 'No' })
    $ErrorActionPreference = 'SilentlyContinue'
    if ($ips = [System.Net.Dns]::GetHostAddresses($computer) | ForEach-Object { $_.IPAddressToString }) { $data.'IP Address(es) from DNS' = ($ips -join ', ') }else { $data.'IP Address from DNS' = 'Could not resolve' }
    $ErrorActionPreference = 'Continue'
    if ($ping -or $ignorePing) {
        $data.'WMI Data Collection Attempt' = 'Yes (ping reply or -IgnorePing)'
        if ($wmi = Get-WmiObject -Computer $computer -Class Win32_ComputerSystem -ErrorAction SilentlyContinue) {
            $data.'Computer Hardware Manufacturer' = $wmi.Manufacturer
            $data.'Computer Hardware Model' = $wmi.Model
            $data.'Memory Physical in MB' = ($wmi.TotalPhysicalMemory / 1MB).ToString('N')
            $data.'Logged On User' = $wmi.Username
        }
        $wmi = $null
        if ($wmi = Get-WmiObject -Computer $computer -Class Win32_LogicalDisk -Filter 'DriveType=3' -ErrorAction SilentlyContinue) { $wmi | Select-Object 'DeviceID', 'Size', 'FreeSpace' | ForEach-Object { $data."Local disk $($_.DeviceID)" = ('' + ($_.FreeSpace / 1MB).ToString('N') + ' MB free of ' + ($_.Size / 1MB).ToString('N') + ' MB total space with ' + ($_.Size / 1MB - $_.FreeSpace / 1MB).ToString('N') + ' MB Used Space') } }
        $wmi = $null
        if ($wmi = Get-WmiObject -Computer $computer -Class Win32_NetworkAdapterConfiguration -ErrorAction SilentlyContinue) {
            $Ips = @{}
            $wmi | Where-Object { $_.IPAddress -match '\S+' } | ForEach-Object { $Ips.$($_.IPAddress -join ', ') = $_.MACAddress }
            $counter = 0
            $Ips.GetEnumerator() | ForEach-Object { $counter++; $data."IP Address $counter" = '' + $_.Name + ' (MAC: ' + $_.Value + ')' }
        }
        $wmi = $null
        if ($wmi = Get-WmiObject -Computer $computer -Class Win32_Processor -ErrorAction SilentlyContinue) {
            $wmi | ForEach-Object {
                $maxClockSpeed = $_.MaxClockSpeed
                $numberOfCores += $_.NumberOfCores
                $description = $_.Description
                $numberOfLogProc += $_.NumberOfLogicalProcessors
                $socketDesignation = $_.SocketDesignation
                $status = $_.Status
                $manufacturer = $_.Manufacturer
                $name = $_.Name }
            $data.'CPU Clock Speed' = $maxClockSpeed
            $data.'CPU Cores' = $numberOfCores
            $data.'CPU Description' = $description
            $data.'CPU Logical Processors' = $numberOfLogProc
            $data.'CPU Socket' = $socketDesignation
            $data.'CPU Status' = $status
            $data.'CPU Manufacturer' = $manufacturer
            $data.'CPU Name' = $name -replace '\s+', ' '
        }
        $wmi = $null
        if ($wmi = Get-WmiObject -Computer $computer -Class Win32_Bios -ErrorAction SilentlyContinue) {
            $data.'BIOS Manufacturer' = $wmi.Manufacturer
            $data.'BIOS Name' = $wmi.Name
            $data.'BIOS Version' = $wmi.Version
        }
        $wmi = $null
        if ($wmi = Get-WmiObject -Computer $computer -Class Win32_OperatingSystem -ErrorAction SilentlyContinue) {
            $data.'OS Boot Time' = $wmi.ConvertToDateTime($wmi.LastBootUpTime)
            $data.'OS System Drive' = $wmi.SystemDrive
            $data.'OS System Device' = $wmi.SystemDevice
            $data.'OS Language' = $wmi.OSLanguage
            $data.'OS Version' = $wmi.Version
            $data.'OS Windows dir' = $wmi.WindowsDirectory
            $data.'OS Name' = $wmi.Caption
            $data.'OS Install Date' = $wmi.ConvertToDateTime($wmi.InstallDate)
            $data.'OS Service Pack' = [string]$wmi.ServicePackMajorVersion + '.' + $wmi.ServicePackMinorVersion
        }
        $ports = @{'File shares/RPC' = '139'; 'File shares' = '445'; 'RDP' = '3389'; 'SSH' = '22'; 'FTP' = '21'; 'Telnet' = '23'; 'SMTP' = '25'; }
        foreach ($service in $ports.Keys) {
            $socket = New-Object Net.Sockets.TcpClient
            $ErrorActionPreference = 'SilentlyContinue'
            $socket.Connect($computer, $ports.$service)
            $ErrorActionPreference = 'Continue'
            if ($socket.Connected) {
                $data."Port $($ports.$service)($service)" = 'Open'
                $socket.Close()
            }
            else { $data."Port $($ports.$service)($service)" = 'Closed or filtered' }$socket = $null
        }
    }
    else { $data.'WMI Data Collected' = 'No (no ping reply and -IgnorePing not specified)' }
    $wmi = $null
    if ($wmi = Get-WmiObject -Class Win32_OperatingSystem -computername $Computer -ErrorAction SilentlyContinue | Select-Object Name, TotalVisibleMemorySize, FreePhysicalMemory, TotalVirtualMemorySize, FreeVirtualMemory, FreeSpaceInPagingFiles, NumberofProcesses, NumberOfUsers ) {
        $wmi | ForEach-Object { $TotalRAM = $_.TotalVisibleMemorySize / 1MB
            $FreeRAM = $_.FreePhysicalMemory / 1MB
            $UsedRAM = $_.TotalVisibleMemorySize / 1MB - $_.FreePhysicalMemory / 1MB
            $TotalRAM = [Math]::Round($TotalRAM, 2)
            $FreeRAM = [Math]::Round($FreeRAM, 2)
            $UsedRAM = [Math]::Round($UsedRAM, 2)
            $RAMPercentFree = ($FreeRAM / $TotalRAM) * 100
            $RAMPercentFree = [Math]::Round($RAMPercentFree, 2)
            $TotalVirtualMemorySize = [Math]::Round($_.TotalVirtualMemorySize / 1MB, 3)
            $FreeVirtualMemory = [Math]::Round($_.FreeVirtualMemory / 1MB, 3)
            $FreeSpaceInPagingFiles = [Math]::Round($_.FreeSpaceInPagingFiles / 1MB, 3)
            $NumberofProcesses = $_.NumberofProcesses
            $NumberOfUsers = $_.NumberOfUsers }
        $data.'Memory - Total RAM GB' = $TotalRAM
        $data.'Memory - RAM Free GB' = $FreeRAM
        $data.'Memory - RAM Used GB' = $UsedRAM
        $data.'Memory - Percentage Free' = $RAMPercentFree
        $data.'Memory - TotalVirtualMemorySize' = $TotalVirtualMemorySize
        $data.'Memory - FreeVirtualMemory' = $FreeVirtualMemory
        $data.'Memory - FreeSpaceInPagingFiles' = $FreeSpaceInPagingFiles
        $data.'NumberofProcesses' = $NumberofProcesses
        $data.'NumberOfUsers' = $NumberOfUsers -replace '\s+', ' '
    }
    "#" * 80
    "OS Complete Information"
    "Generated $(get-date)"
    "Generated from $(Get-Content env:computername)"
    "#" * 80
    $data.GetEnumerator() | Sort-Object 'Name' | Format-Table -AutoSize
    $data.GetEnumerator() | Sort-Object 'Name' | Out-GridView -Title "$computer Information"
}