Add time in output file - powershell

Question

This script add domain users to any other or remote domain computer / system's 'Administrators' group through the PowerShell.
This returns a final status in a csv with three columns (Computer name, availability, status)
I need to add a fourth column to this output file that contains the time and date.
#Create a file in the required path and update in the below command line
$Output = "C:\CSV\Output.csv"
#The output field of the computer will blank if the user is already exist in the group
Add-Content -Path $Output -Value "ComputerName,Availability,Status"
$status = $null
$availability = $null
#Save the CSV (Comma seperated) file with the server host name and the username to be added
Import-Csv C:\CSV\Computer.csv | ForEach-Object {
$Computer=$_.Computer
$User=$_.user
if (Test-Connection -ComputerName $Computer -Count 1 -Quiet) {
Write-Verbose "$Computer : Online"
$availability="Oniline"
try {
$GroupObj=[ADSI]"WinNT://$Computer/Administrators,group"
$GroupObj.PSBase.Invoke("Add",([ADSI]"WinNT://jdom.edu/$User").Path)
$status="Success"
#Update the status in the output file
Add-Content -Path $Output -Value ("{0},{1},{2}" -f $Computer, $availability, $status)
} catch {
Write-Verbose "Failed"
}
} else {
Write-Warning "$Computer : Offline"
$availability = "Offline"
$status = "failed"
#Update the status in the output file
Add-Content -Path $Output -Value ("{0},{1},{2}" -f $Computer, $availability, $status)
}
}
This is how the output file looks, this is where I want to add the fourth column with date and time:
ComputerName,Availability,Status
TD123696WJN339P,Oniline,Success
TD123419WJN339P,Oniline,Success
ComputerName,Availability,Status
5VERF9097LTIO01,Offline,failed
ZF001024DJH706G,Offline,failed
5MICF9017LTIO01,Offline,failed

Answer 1

The simple approach would be to just add another field to your output, i.e.
Add-Content -Path $Output -Value "ComputerName,Availability,Status,Timestamp"
and
"{0},{1},{2},{3}" -f $Computer, $availability, $status, (Get-Date)
However, unless you actually want multiple header lines in your output file (why?) you should rather use calculated properties and Export-Csv.
Import-Csv 'input.csv' |
Select-Object Computer, User, #{n='Status';e={
if (Test-Connection -ComputerName $_.Computer -Count 1 -Quiet) {
...
} else {
...
}
}}, #{n='Timestamp';e={Get-Date}} |
Export-Csv 'output.csv' -NoType

Answer 2

This is really interesting approach you have there working with CSV and it overcomplicates the scenario a bit (from my perspective and no disrespect!).
Why don't try using a PowerShell Custom Object?
#Create a file in the required path and update in the below command line
$Output = "C:\CSV\Output.csv"
#The output field of the computer will blank if the user is already exist in the group
Add-Content -Path $Output -Value "ComputerName,Availability,Status"
$status = $null
$availability = $null
#Save the CSV (Comma seperated) file with the server host name and the username to be added
$result = Import-Csv C:\CSV\Computer.csv | ForEach-Object {
$Computer=$_.Computer
$User=$_.user
if (Test-Connection -ComputerName $Computer -Count 1 -Quiet) {
Write-Verbose "$Computer : Online"
$availability="Oniline"
try {
$GroupObj=[ADSI]"WinNT://$Computer/Administrators,group"
$GroupObj.PSBase.Invoke("Add",([ADSI]"WinNT://jdom.edu/$User").Path)
$status="Success"
#Update the status in the output file
[PSCustomObject]#{
Computer = $Computer
Availability = $availability
Status = $status
Date = Get-Date
}
} catch {
Write-Verbose "Failed"
}
} else {
Write-Warning "$Computer : Offline"
$availability = "Offline"
$status = "failed"
#Update the status in the output file
[PSCustomObject]#{
Computer = $Computer
Availability = $availability
Status = $status
Date = Get-Date
}
}
}
$result | Export-Csv -Path $Output -NoTypeInformation
This way, you will store the result into the $result variable and will be able to export it as CSV, without any complication.
Using PowerShell Custom Object is a great way to store data from different sources and provide the output in the way you would like to see it.
Give it a try and provide a feedback, if you would like :)