Managing SharePoint Site Permissions with PowerShell

# Install the SharePoint Online Management Shell if not already installed
if (-Not (Get-Module -ListAvailable -Name Microsoft.Online.SharePoint.PowerShell)) {
    Install-Module -Name Microsoft.Online.SharePoint.PowerShell -Scope CurrentUser -AllowClobber
}
# Connect to SharePoint Online
$siteUrl = "https://yourtenant.sharepoint.com/sites/yoursite"
$credential = Get-Credential
Connect-SPOService -Url $siteUrl -Credential $credential
# Retrieve current site permissions
$siteGroups = Get-SPOSiteGroup -Site $siteUrl
Write-Host "=== Current Permissions for Site: $siteUrl ==="
foreach ($group in $siteGroups) {
    Write-Host "Group: $($group.Title)"
    $members = Get-SPOGroupMembers -Group $group.Title -Site $siteUrl
    foreach ($member in $members) {
        Write-Host "  User: $($member.LoginName)"
    }
}
# Update permissions: Add or Remove Users
$action = Read-Host "Do you want to add or remove users? (add/remove)"
$userEmail = Read-Host "Enter the user's email address"
$groupTitle = Read-Host "Enter the group title"
switch ($action.ToLower()) {
    "add" {
        Add-SPOUser -Group $groupTitle -LoginName $userEmail -Site $siteUrl
        Write-Host "Added $userEmail to $groupTitle group."
    }
    "remove" {
        Remove-SPOUser -Group $groupTitle -LoginName $userEmail -Site $siteUrl
        Write-Host "Removed $userEmail from $groupTitle group."
    }
    default {
        Write-Host "Invalid action specified."
    }
}
# Disconnect from SharePoint
Disconnect-SPOService
Write-Host "Permissions management process completed."