Powershell Computer information query export to excel - excel

Question

im trying to take a list of computers and pull information from them and export it into an excel sheet where i have all information of the systems per row. im trying to get information like:
Computername
OS
BIOS
Last boot
Etc
the code i wrote:
$computers = Get-Content "C:\example\Computers.txt)"
$OSinfo = Get-WmiObject Win32_OperatingSystem -ComputerName $computers | Select PSComputerName, Caption, OSArchitecture, Version, BuildNumber
$BIOSinfo = Get-WmiObject -Class Win32_BIOS -ComputerName $computers | Select-Object PSComputerName, Manufacturer, SerialNumber, SMBIOSBIOSVersion
$lastboot = Get-CimInstance win32_operatingsystem -ComputerName $computers | select csname, lastbootuptime
$objects +=$OSinfo +=$BIOSinfo +=$lastboot
$objects | Export-csv -Path "C:\example\output.csv"
however, i cant figure out how to put all this information into one spreadsheet tab. i also cant figure out how to tell the script if it cant ping or find it, to just say "offline"

Answer 1

This should work for you:
$computers = Get-Content "C:\example\Computers.txt"
# Define the properties we want to select from each query
$osColumns = 'PSComputerName', 'Caption', 'OSArchitecture', 'Version', 'BuildNumber'
$biosColumns = 'PSComputerName', 'Manufacturer', 'SerialNumber', 'SMBIOSBIOSVersion'
$lastbootColumns = 'csname', 'lastbootuptime'
# Obtain the desired information from Wmi/Cim
$OSinfo = Get-WmiObject Win32_OperatingSystem -ComputerName $computers | Select-Object $osColumns
$BIOSinfo = Get-WmiObject -Class Win32_BIOS -ComputerName $computers | Select-Object $biosColumns
$lastboot = Get-CimInstance win32_operatingsystem -ComputerName $computers | Select-Object $lastbootColumns
# Iterate over the computers and collect the computer-specific information
$computerInfo = foreach( $computer in $computers ) {
$thisOSInfo = $OSInfo | Where-Object { $_.PSComputerName -eq $computer }
$thisBIOSInfo = $BIOSinfo | Where-Object { $_.PSComputerName -eq $computer }
$thisLastboot = $lastboot | Where-Object { $_.csname -eq $computer }
# This row object will be returned as a PSCustomObject for export
$row = #{}
foreach( $prop in #( $thisOSInfo.psobject.Properties.Name ) ) {
if( $prop -in $osColumns ) {
$row[$prop] = $thisOSInfo.$prop
}
}
foreach( $prop in #( $thisBIOSInfo.psobject.Properties.Name ) ) {
if( $prop -in $biosColumns ) {
$row[$prop] = $thisBIOSInfo.$prop
}
}
foreach( $prop in #( $thisLastboot.psobject.Properties.Name ) ) {
if( $prop -in $lastbootColumns ) {
$row[$prop] = $thisLastboot.$prop
}
}
[PSCustomObject]$row
}
$computerInfo | Export-Csv -NoTypeInformation \path\to\report.csv
The way this works:
Well-define the columns we want from each query. We'll use those later to make sure we only grab properties we want from the resulting query responses. Note that Get-CimInstance will have the csname property instead of PSComputerName.
Query WMI classes for information on known computers, store each response in its own variable.
Iterate over each computer queried, building that row of information from each query response.
Only add the query property if it exists in the corresponding *Columns variable. This is less necessary for your code but becomes necessary when exporting some other, non-WMI/Cim objects, or if you don't use Select-Object earlier, to reduce noise.
Each row is defined as a hastable for ease of modification, then converted to a PSCustomObject to it behaves more like an immutable object upon return. This is necessary for the output of Export-Csv to output the way you want.
Export the computer information with Export-Csv to a CSV file, which is now an array of PSCustomObjects where each row should be a single computer you've queried.