Pinger - Repeatedly pings the specified server until the ping is successful.

Pinger.ps1

# -------------------------------------------------------------------------------------------------
# Pinger.ps1
#
# Repeatedly pings the specified server until the ping is successful.
# -------------------------------------------------------------------------------------------------

# Script params
param([String]$server)

# Script param validation
if ([String]::IsNullOrEmpty($server)) {
    throw "You must specify a `$server to ping"
}

$pingOutput = @()

while ($pingOutput.Length -eq 0) {
    Write-Host "Pinging $server..."
    $pingOutput = @((ping $server -n 2) | where { $_ -match "TTL=[\d]{1,}" })
} 

Write-Host "$server pinged successfully."

# Send an email notifying that the server is back online
$smtpClient = New-Object Net.Mail.SmtpClient
$smtpClient.Host = "smtp.example.com"

$currentUser = $env:UserName
$from = "[email protected]"
$to = "[email protected]"
$title = "$server was pinged successfully, and appears to be back up"
$body = "$server was pinged successfully, and appears to be back up"

$smtpClient.Send($from, $to, $title, $body)