Check to see if user exists powershell script.

I am looking to add to a powershell script that will check if the user exists. If not then run this script. I just would like to plug that extra part right in. Here is the script.

add-PSSnapin Microsoft.Exchange.Management.PowerShell.E2010, Quest.ActiveRoles.ADManagement
Import-Module ActiveDirectory
$Users = Import-Csv C:\temp\UsersPS.csv

#Create a bulk mailboxes
Foreach ($User in $Users){

#Create a Mail-Enabled User
New-Mailbox -Name ($User.sn + ", " + $User.givenName) -FirstName $User.givenName -LastName $User.sn -Alias $User.alias `
-UserPrincipalName ($user.alias +'@mtnbrook.loc') -Database $User.Database -RetentionPolicy MBSPolicy -OrganizationalUnit $User.OU `
-Password ( ConvertTo-SecureString $User.password -AsPlainText -Force) -ResetPasswordOnNextLogon:$false `
-ErrorVariable err | Out-Null
Add-MailboxPermission -Identity $user.alias -User "Mailbox Administrators" -AccessRights FullAccess -Automapping $false


#Check AD Latency
do
{
 $mailbox = Get-Mailbox -Identity $user.alias -ErrorAction SilentlyContinue
}
While ($mailbox -eq $null)

#Modify attributes of User's account properties
Set-QADUser -Identity $user.alias -Description $user.alias -Company $user.Company -Initials $user.Initials -Title $user.Title -HomeDirectory $user.homeDirectory `
-Office $User.office -HomeDrive G: -PasswordNeverExpires:$true
Add-QADPermission -Identity $user.alias -Account SELF,Everyone -Extendedright "User-Change-Password" -Deny -ApplyTo ThisObjectOnly
Add-ADGroupMember -Identity $user.Group -Member $user.alias
}
falconcurtAsked:
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falconcurtAuthor Commented:
Still not sure how i would actually implement that in this script.
0
NikolasGCommented:
Hi,
I think that the following should do what you ask
Import-Module ActiveDirectory
$Users = Import-Csv C:\temp\UsersPS.csv

#Create a bulk mailboxes
Foreach ($User in $Users){

#check if the user exists
$Status = (Check-ADUser -username $User).Status
If ($Status -eq 1)
{
    write-host("$User exists.")
} Else {
    write-host("$User does not exists creating mail.")
	#Create a Mail-Enabled User
	New-Mailbox -Name ($User.sn + ", " + $User.givenName) -FirstName $User.givenName -LastName $User.sn -Alias $User.alias `
	-UserPrincipalName ($user.alias +'@mtnbrook.loc') -Database $User.Database -RetentionPolicy MBSPolicy -OrganizationalUnit $User.OU `
	-Password ( ConvertTo-SecureString $User.password -AsPlainText -Force) -ResetPasswordOnNextLogon:$false `
	-ErrorVariable err | Out-Null
	Add-MailboxPermission -Identity $user.alias -User "Mailbox Administrators" -AccessRights FullAccess -Automapping $false


	#Check AD Latency
	do
	{
		$mailbox = Get-Mailbox -Identity $user.alias -ErrorAction SilentlyContinue
	}
	While ($mailbox -eq $null)

	#Modify attributes of User's account properties
	Set-QADUser -Identity $user.alias -Description $user.alias -Company $user.Company -Initials $user.Initials -Title $user.Title -HomeDirectory $user.homeDirectory `
	-Office $User.office -HomeDrive G: -PasswordNeverExpires:$true
	Add-QADPermission -Identity $user.alias -Account SELF,Everyone -Extendedright "User-Change-Password" -Deny -ApplyTo ThisObjectOnly
	Add-ADGroupMember -Identity $user.Group -Member $user.alias
	}
}

Function Check-ADUser
{
    Param ($Username)
 
    $Username = ($Username.Split("\")[1])
    $ADCompletePath = "LDAP://"+$ADServer+":"+$ADPort+"/DC="+$D1name+",DC="+$D2name
    $ADRoot =  [ADSI]'"$ADCompletePath"'

    $ADSearch = New-Object System.DirectoryServices.DirectorySearcher($ADRoot)  
    $SAMAccountName = "$Username"
    $ADSearch.Filter = "(&(objectClass=user)(sAMAccountName=$SAMAccountName))"
    $Result = $ADSearch.FindAll()
 
    If($Result.Count -eq 0)
    {
        $Status = "0"
    }
    Else
    {
        $Status = "1"
    }
     
    $Results = New-Object Psobject
    $Results | Add-Member Noteproperty Status $Status
    Write-Output $Results     
}

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falconcurtAuthor Commented:
For some reason it is not recognizing check-aduser. I have used the import-module activedirectory but still does not recognize command check-aduser. Am i missing something?
0
falconcurtAuthor Commented:
I got it to work when i changed the location of the function statement. I move it to the top and it worked. Thanks!
0
NikolasGCommented:
Try the following
Import-Module ActiveDirectory
$Users = Import-Csv C:\temp\UsersPS.csv
#Ask for the primary domain controler on which it's going to check the names
$ADServer=Read-host -prompt "`nPlease enter the AD Server name [NetBIOS name]:"

#Using WMI object to retrieve the domain name
$ADDomainName=(Get-WmiObject Win32_ComputerSystem).Domain

#Splitting the domain name a.com to a and com
$D1name=($ADDomainName.Split(".")[0])
$D2name=($ADDomainName.Split(".")[1])

Function Check-ADUser
{
    Param ($Username)
 
    $Username = ($Username.Split("\")[1])
    $ADCompletePath = "LDAP://"+$ADServer+":389"+"/DC="+$D1name+",DC="+$D2name
    $ADRoot =  [ADSI]'"$ADCompletePath"'

    $ADSearch = New-Object System.DirectoryServices.DirectorySearcher($ADRoot)  
    $SAMAccountName = "$Username"
    $ADSearch.Filter = "(&(objectClass=user)(sAMAccountName=$SAMAccountName))"
    $Result = $ADSearch.FindAll()
 
    If($Result.Count -eq 0)
    {
        $Status = "0"
    }
    Else
    {
        $Status = "1"
    }
     
    $Results = New-Object Psobject
    $Results | Add-Member Noteproperty Status $Status
    Write-Output $Results     
}


#Create a bulk mailboxes
Foreach ($User in $Users){

#check if the user exists
$Status = (Check-ADUser -username $User.sn).Status
If ($Status -eq 1)
{
    write-host("$User exists.")
} Else {
    write-host("$User does not exists creating mail.")
	#Create a Mail-Enabled User
	New-Mailbox -Name ($User.sn + ", " + $User.givenName) -FirstName $User.givenName -LastName $User.sn -Alias $User.alias `
	-UserPrincipalName ($user.alias +'@mtnbrook.loc') -Database $User.Database -RetentionPolicy MBSPolicy -OrganizationalUnit $User.OU `
	-Password ( ConvertTo-SecureString $User.password -AsPlainText -Force) -ResetPasswordOnNextLogon:$false `
	-ErrorVariable err | Out-Null
	Add-MailboxPermission -Identity $user.alias -User "Mailbox Administrators" -AccessRights FullAccess -Automapping $false


	#Check AD Latency
	do
	{
		$mailbox = Get-Mailbox -Identity $user.alias -ErrorAction SilentlyContinue
	}
	While ($mailbox -eq $null)

	#Modify attributes of User's account properties
	Set-QADUser -Identity $user.alias -Description $user.alias -Company $user.Company -Initials $user.Initials -Title $user.Title -HomeDirectory $user.homeDirectory `
	-Office $User.office -HomeDrive G: -PasswordNeverExpires:$true
	Add-QADPermission -Identity $user.alias -Account SELF,Everyone -Extendedright "User-Change-Password" -Deny -ApplyTo ThisObjectOnly
	Add-ADGroupMember -Identity $user.Group -Member $user.alias
	}
}

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