Change email address in CSV - powershell

Question

I am writing PowerShell code to export email addresses to a csv file and edit them. I've written the following:
# Script to get all DLs and email addresses in csv file
Get-ADGroup -Filter 'groupcategory -eq "distribution"' -Properties * |
select Name, mail |
Export-csv "C:\temp\Distribution-Group-Members.csv"
# Following will import the csv, make new column as proxy and save the file
# as update.csv
Import-Csv "C:\temp\Distribution-Group-Members.csv" |
Select-Object "Name", "mail", #{n = "proxy"; e = "mail"} |
Export-Csv "c:\temp\Distribution-Group-Members-Updated.csv" -NoTypeInfo
# Following script can import the csv and set proxy addresses from proxy
# column
Import-Csv "c:\temp\Distribution-Group-Members-Updated.csv" |
Foreach {
Get-ADGroup $_.Name | Set-ADGroup -Add #{
proxyaddresses = ($_.proxy -split ";")
}
}
Now, I would like to add 2 more features in the script:
update domain for existing mail column e.g. update mail address form test#abc.com to test#xyz.com
Add SMTP:test#xyz.com;smtp:test#abc.com" as Proxy mail address, so that xyz become primary mail address and abc as proxy domain
So assuming my DL name is "DL Test" email is "test#abc.com" => The script should update the email address of DL to "test#xyz.com" and add "smtp:test#abc.com" as proxy mail address
Can someone please advise, how can I achieve that?

Answer 1

The part where you have written:
select-object "Name", "mail", #{n = "proxy"; e = "mail"}|
The proxy part is called a calculated property. The first two with just names Name and Mail are copied directly from the input objects, but using the #{..} syntax, you can put code to calculate a new value instead.
So you can use this to achieve both your desired changes:
Import-Csv -Path 'C:\temp\Distribution-Group-Members.csv' |
Select-Object -Property Name,
#{Label='Mail'; Expression={$_.Mail -replace 'abc', 'xyz'}},
#{Label='Proxy'; Expression={"SMTP:$($_.Mail -replace 'abc', 'xyz');smtp:$($_.Mail)"}}|
Export-csv 'C:\temp\Distribution-Group-Members.csv' -NoTypeInformation