Powershell Ping

frank February 24, 2014 No Comments

This neat little thing wil test connection for a list of pingable DNS names (URLS, switches, servers, computers, whatever), and output the result in a list with the objects IP address(es).
If the ICMP ping does not reach the object, it outputs this and jumps to the next object on its list.

Hurray!

cls

$servers = gc "C:temppingme.txt"

Write-Host
write-host "::::::::::::::::::::::::::"
Write-host ":: Testing Connectivity ::"
write-host "::::::::::::::::::::::::::"
Write-Host
   foreach ($s in $servers) {
     if(!(Test-Connection -Cn $s -BufferSize 16 -Count 1 -ea 0 -quiet))
        {write-host "Problem connecting to $s" -foregroundcolor “yellow”}
    else
        {write-host "Connectivity tested OK on $s." "IP:"([System.Net.Dns]::GetHostAddresses($s)) -foregroundcolor “green”}}

 derp

– F

Find server OS with Powershell and TTL

frank January 6, 2014 No Comments

This handy little thing will identify the Operating System on one or more servers, using the OS’s default TTL value as a trigger.
(Some OS’ uses different TTL values. Most of them are listed on this site.)

cls
 $servers = "Server1","Server2" 

foreach ($server in $servers) 

{ 
$TTL = Test-Connection $server -Count 1 | select -exp ResponseTimeToLive

    Switch($TTL)
    {
        {$_ -le 64} {"$server runs Linux OS"; break}
        {$_ -le 128} {"$server runs Windows OS"; break}
        {$_ -le 255} {"$server runs UNIX OS"; break}
    }
}

– F