The other week, I posted an example of how to get a website status using PowerShell. I have now extended this script to iterate through an XML file to get the statuses of all websites. You could even amend the script to run as a scheduled task and save the results to a log file of some description.

The XML file (SitesToCheck.ps1xml) looks as follows:

<Sites>
    <Site SiteURL="http://www.google.com" UserName="" Password="" Domain=""/>
    <Site SiteURL="http://www.webtechy.co.uk" UserName="" Password="" Domain=""/>
    <Site SiteURL="http://www.microsoft.com" UserName="" Password="" Domain=""/>
    <Site SiteURL="http://www.eden-apartments.co.uk" UserName="" Password="" Domain=""/>
</Sites>

And the PowerShell (GetWebStatuses.ps1) is as follows:

#############################################################
# Title: Get Web Statuses Script
# Version: 1.0
# Author: Ben Weeks
#############################################################

#############################################################
# Modules
#############################################################

# N/A

#############################################################
# Aliases
#############################################################

# N/A

#############################################################
# Global Variables
#############################################################

$global:cfgSitesFile = "SitesToCheck.ps1xml"

#############################################################
# Functions
#############################################################

function GetStatus([string]$SiteURL, [string]$Username, [string]$Password, [string]$Domain) {
    try {
        [System.Net.HttpWebRequest] $WebRequest = [System.Net.HttpWebRequest] [System.Net.WebRequest]::Create($SiteURL)
        if ($Username) {
            # then a username exists in the config file
            Write-Host "Using $UserName, $Password, $Domain in config file ..."
            $WebRequest.Credentials = New-Object System.Net.NetworkCredential($Username, $Password, $Domain)
        } else {
            $WebRequest.Credentials = [System.Net.CredentialCache]::DefaultCredentials
        }
        [System.Net.HttpWebResponse] $WebResponse = [System.Net.HttpWebResponse] $WebRequest.GetResponse()
        $HostName = $SiteURL -replace("http://","")
       
        try {
            $HostEntryDetails = [System.Net.Dns]::GetHostEntry($HostName)
            foreach ($IP in $HostEntryDetails.AddressList)
            {
                Write-Host("IP = $IP");
            }
        } catch {
            # Probably a machine name and no associated IP address.
        }

        $Server = $WebResponse.Server
        $ResponseCode = $WebResponse.StatusCode
        Write-Host "Response code for $SiteURL ($Server) is $ResponseCode" -ForegroundColor Green
    } catch [Net.WebException] {
        $ErrorMessage = $_.Exception.Message
        Write-Host "The following error occurred: $ErrorMessage" -ForegroundColor Red
    }
}

#############################################################
# Script body
#############################################################

$cfg = [xml] ( gc $global:cfgSitesFile )
$Sites = $cfg.Sites.Site

foreach ($Site in $Sites) {
    try {
        $SiteURL = $Site.SiteURL
        $Username = $Site.Username
        $Password = $Site.Password
        $Domain = $Site.Domain
        Write-Host "Checking $SiteURL ..."
        GetStatus $SiteURL $Username $Password $Domain
    } catch [Net.WebException] {
        $ErrorMessage = $_.Exception.Message
        Write-Host "The following error occurred: $ErrorMessage" -ForegroundColor Red
    }
}

Also see attached files.