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Import-CSV  and remove specified values

Posted on 2016-08-18
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Last Modified: 2016-09-12
I have a powershell script to export some account info from AD. I want to read this CSV file in and remove certain accounts. I can't do it dynamically as it's something a manager needs to specify. The CSV file output is below

"Email","FirstName","LastName","Department","whenCreated"
"User1@domain.com","UserF1","UserL1l","Cashiering","9/8/2006 11:33:53 AM"
"User2@domain.com","UserF2","UserL2l","Cashiering","9/13/2006 11:50:59 AM"
"User3@domain.com","UserF3","UserL3l","Cashiering","12/6/2012 2:51:43 PM"
"User4@domain.com","UserF4","UserL4l","Cashiering","12/6/2012 2:51:43 PM"




I'd like to be able to loop through a where clause and remove lines based on "Email address" I specify in the file. I forsee the need to add additonal accounts in the future so if I could use an array of some sort that would be best. I see a couple solutions online but not quite what I need. logic would be

Import CSV

If account is in the list below, remove the line from the CSV
"User1@domain.com"
"User4@domain.com"
"User9@domain.com"
"User10@domain.com"

Export-CSV Contents


any help is appreciated!
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Question by:jbla9028
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5 Comments
 
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Expert Comment

by:Qlemo
ID: 41761525
$ignore = @"
User1@domain.com
User4@domain.com
User9@domain.com
User10@domain.com
"@ -split "`r`n"

(Get-Content file.txt  | Select-String -NotMatch -SimpleMatch $ignore) | Out-File file2.txt

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As I suppose comparing parts of the line with the email addresses is enough of a match to reliable exclude the unwanted lines. We can make the pattern more restrictive, or switch to your suggestion handling CSV data, if required.
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Author Comment

by:jbla9028
ID: 41768168
Sorry for the delay, I was on vacation. I tried to add this statement but it's not removing the line from the CSV file. it's just outputing the same exact text file it read back in.
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LVL 69

Expert Comment

by:Qlemo
ID: 41768316
There seems to be an EE issue with the backtick used, I suspect. Let's try something slightly different:
$ignore = 'User1@domain.com',
          'User4@domain.com',
          'User9@domain.com',
          'User10@domain.com'

(Get-Content file.txt  | Select-String -NotMatch -SimpleMatch $ignore) | Out-File file2.txt

Open in new window

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LVL 1

Author Comment

by:jbla9028
ID: 41768902
]Thank you for the help again. So this time the user was removed but the CSV file structure was manipulated in a way that makes it unusable. For some reason records are now traversing multiple lines in the CSV file.


CSV Prior



CSV Post
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Accepted Solution

by:
Qlemo earned 500 total points
ID: 41769052
That has to be an issue with the app you use to read the file. Test with two entries only, and compare the files with a standard editor, then with the app.
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