Export Powershell command to Excel

Question

I have the following command

Get-WmiObject win32_OperatingSystem |%{"Total Physical Memory: {0}KB`nFree Physical Memory : {1}KB`nTotal Virtual Memory : {2}KB`nFree Virtual Memory  : {3}KB" -f $_.totalvisiblememorysize, $_.freephysicalmemory, $_.totalvirtualmemorysize, $_.freevirtualmemory}

I want to export the above output to an excel file. I have:

Get-WmiObject win32_OperatingSystem |%{"Total Physical Memory: {0}KB`nFree Physical Memory : {1}KB`nTotal Virtual Memory : {2}KB`nFree Virtual Memory  : {3}KB" -f $_.totalvisiblememorysize, $_.freephysicalmemory, $_.totalvirtualmemorysize, $_.freevirtualmemory} | Select-Object VisibleMem, FreeMem, VirtualMem,FreeVirtualMem | Export-Csv -Path "C:\Test.csv" -Encoding ascii -NoTypeInformation -UseCulture

This doesn't output anything besides titles of columns.I am looking for the output in each column. Any help?

Answer 1

1. You're throwing away the object with its properties when you create the the strings in your Foreach-Object loop so you don't have anything to export to csv anymore.
2. The property names in Select-Object doesn't exist. You can't make up column names (without using calculated properties/columns, see sample of this below).

Try this to output the data:

Get-WmiObject win32_OperatingSystem |
Select-Object TotalVisibleMemorySize, FreePhysicalMemory, TotalVirtualMemorySize, FreeVirtualMemory |
Export-Csv -Path "C:\Test.csv" -Encoding ascii -NoTypeInformation -UseCulture

If you need different column-names:

Get-WmiObject win32_OperatingSystem |
Select-Object @{n="VisibleMem";e={$_.TotalVisibleMemorySize}}, @{n="FreeMem";e={$_.FreePhysicalMemory}}, @{n="VirtualMem";e={$_.TotalVirtualMemorySize}}, @{n="FreeVirtualMem";e={$_.FreeVirtualMemory}} |
Export-Csv -Path "C:\Test.csv" -Encoding ascii -NoTypeInformation -UseCulture

If you need to write the text to the screen (for the user to see) while also saving them you would need to use Write-Host and remember to let the object passthrough to the next cmdlet in the pipeline:

Get-WmiObject win32_OperatingSystem |
ForEach-Object {
    #Write to screen
    Write-Host ("Total Physical Memory: {0}KB`nFree Physical Memory : {1}KB`nTotal Virtual Memory : {2}KB`nFree Virtual Memory  : {3}KB" -f $_.totalvisiblememorysize, $_.freephysicalmemory, $_.totalvirtualmemorysize, $_.freevirtualmemory);
    #Throw the original object to the next cmdlet in the pipeline
    $_ 
} |
Select-Object TotalVisibleMemorySize, FreePhysicalMemory, TotalVirtualMemorySize, FreeVirtualMemory |
Export-Csv -Path "C:\Test.csv" -Encoding ascii -NoTypeInformation -UseCulture