Add and Remove Site Collection Administrator in SharePoint Online through Powershell

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Author          -> Shiv Mangal Singh
Date            -> 12 th March - 2017
Description     -> Add and Remove Site Collection Administrator in SharePoint Online through Powershell.

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    Import-Module Microsoft.Online.SharePoint.PowerShell -DisableNameChecking
    $Credential = Get-Credential
    #Variables for processing
    $AdminURL = "https://office365.connect.contoso/"
    $loginName ="abc@contoso.com"
    #Connect to SharePoint Online
    Connect-SPOService -Url $AdminURL -Credential $Credential
    # Get All Site Collection from SiteColl.txt file
    $Sitecolls = Get-Content "D:\shiv\SubsiteFullControlReport\SiteColl.txt"
    Write-Host $Sitecolls
    foreach($Site in $Sitecolls)
    {
    Write-Host "Adding Site Collection Administrator for Site:" $Site
    #Add Site collection Admin
       Set-SPOUser -Site $Site -LoginName $loginName -IsSiteCollectionAdmin $True
    # Remove Site Collection admin
    # Set-SPOUser -Site $Site -LoginName $loginName -IsSiteCollectionAdmin $False
    }

 # Disconnect to SharePoint Online
 Disconnect-SPOService