Skip to main content

Navy Chief Aiding the Marines with PowerShell

I love this job.  I’m not only talking about what I do in the civilian world as an IT Trainer, but also as a Navy Chief Petty Officer.  I received a Facebook message from a Marine at Camp Pendleton a few nights ago in need of some assistance with PowerShell. Below is his line of code and his error
Get-User -organizationalunit test.local.net/users -RecipentTypeDetails

Get-ADUser : A parameter cannot be found that matches parameter name 'organizationalunit'.
At line:1 char:12
+ Get-ADUser -organizationalunit PowerIT.com/users
+            ~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidArgument: (:) [Get-ADUser], ParameterBindingException
    + FullyQualifiedErrorId : NamedParameterNotFound,Microsoft.ActiveDirectory.Management.Commands.GetADUser

Being both a PowerShell enthusiast and a Navy Chief, I helped him see what was wrong with his code, but I also had to correct his bad habits.

The error on Get-ADUser is because there is not an –OrganizationalUnit parameter. (there is also not a RecipentTypeDetails parameter.)  I directed him to look up the help file for Get-ADUser and I gave him the address (https://technet.microsoft.com/en-us/library/ee617241.aspx).  I even told him the correct parameter name, –SearchBase. 

The root cause of the error is this Marine is have is “assuming” parameter names and not actually looking them up.  I find this in every PowerShell class that I teach.  Despite the first lesson of each class explains how to prevent you from making this mistake, someone always does.  Never assume a parameter is present.  Check the help file for the Cmdlet being used and verify.


The correction came when he did the same thing again for his next cmdlet. PowerShell is an incredible technology, but if you are not willing to read the help files, do not work in this Chief’s work center.  Reading the help files is not an option, but a requirement to effectively utilize PowerShell.

Comments

Popular posts from this blog

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.

How to run GPResult on a remote client with PowerShell

In the past, to run the GPResult command, you would need to either physically visit this client, have the user do it, or use and RDP connection.  In all cases, this will disrupt the user.  First, you need PowerShell remoting enabled on the target machine.  You can do this via Group Policy . Open PowerShell and type this command. Invoke-Command –ScriptBlock {GPResult /r} –ComputerName <ComputerName> Replace <ComputerName> with the name of the target.  Remember, the target needs to be online and accessible to you.

Error icon when creating a GPO Preference drive map

You may not have an error at all.  Take a look at the drive mapping below. The red triangle is what threw us off.  It is not an error.  It is simply a color representation of the Replace option of the Action field in the properties of the drive mappings. Create action This give you a green triangle. The Create action creates a new mapped drive for users. Replace Action The Replace action gives you a red triangle.  This action will delete and recreate mapped drives for users. The net result of the Replace action is to overwrite all existing settings associated with the mapped drive. If the drive mapping does not exist, then the Replace action creates a new drive mapping. Update Action The Update action will have a yellow triangle. Update will modify settings of an existing mapped drive for users. This action differs from Replace in that it only updates settings defined within the preference item. All other settings remain as configured on the mapped drive. If the