What to do if your CSV file has a blank line at the end?

On PowerShell.com, I answered a question from a forum member who was receiving a CSV with the list of user names to be added to a group. If the CSV file had a blank line at the end of it, it would cause problems. Below is my code to read in a CSV file and filter out any blank lines before handing the object to PowerShell for processing.

Import-Csv -Path "F:\Temp\Users.csv" |

ForEach-Object {If($_.Name -ne "") {Add-ADGroupMember -Identity "Test Group" `

-Members $_.Name}}

We first import the CSV file into the PowerShell pipeline. Next we pass the object to a ForEach-Object statement. Each object is tested to see if the name property is empty. If it is, then nothing is done. If it contains data, then the user is added to the group. I could not use Where-Object {$_.Name –ne “”} as my filter because Add-ADGroupMember does not accept input from the PowerShell pipeline for its Member parameter.

Comments

Adding a Comment to a GPO with PowerShell

As I'm writing this article, I'm also writing a customization for a PowerShell course I'm teaching next week in Phoenix. This customization deals with Group Policy and PowerShell. For those of you who attend my classes may already know this, but I sit their and try to ask the questions to myself that others may ask as I present the material. I finished up my customization a few hours ago and then I realized that I did not add in how to put a comment on a GPO. This is a feature that many Group Policy Administrators may not be aware of. This past summer I attended a presentation at TechEd on Group Policy. One organization in the crowd had over 5,000 Group Policies. In an environment like that, the comment section can be priceless. I always like to write in the comment section why I created the policy so I know its purpose next week after I've completed 50 other tasks and can't remember what I did 5 minutes ago. In the Group Policy module for PowerShell V3, th

Return duplicate values from a collection with PowerShell

If you have a collection of objects and you want to remove any duplicate items, it is fairly simple. # Create a collection with duplicate values $Set1 = 1 , 1 , 2 , 2 , 3 , 4 , 5 , 6 , 7 , 1 , 2 # Remove the duplicate values. $Set1 | Select-Object -Unique 1 2 3 4 5 6 7 What if you want only the duplicate values and nothing else? # Create a collection with duplicate values $Set1 = 1 , 1 , 2 , 2 , 3 , 4 , 5 , 6 , 7 , 1 , 2 #Create a second collection with duplicate values removed. $Set2 = $Set1 | Select-Object -Unique # Return only the duplicate values. ( Compare-Object -ReferenceObject $Set2 -DifferenceObject $Set1 ) . InputObject | Select-Object – Unique 1 2 This works with objects as well as numbers. The first command creates a collection with 2 duplicates of both 1 and 2. The second command creates another collection with the duplicates filtered out. The Compare-Object cmdlet will first find items that are diffe

How to list all the AD LDS instances on a server

AD LDS allows you to provide directory services to applications that are free of the confines of Active Directory. To list all the AD LDS instances on a server, follow this procedure: Log into the server in question Open a command prompt. Type dsdbutil and press Enter Type List Instances and press Enter . You will receive a list of the instance name, both the LDAP and SSL port numbers, the location of the database, and its status.

Jason Yoder, MCT

Search This Blog