Ive started using PowerCLI a bit more in day-to-day situations, and i'm finding it rather useful. Once youve got your head round the syntax and the available cmd-lets its a viable time saving option, especially as you grow your little repo of reusable scripts. Here is one of mine that I made today...
I had the need to enable "Remote Tech Support Mode" (TSM-SSH) on all ESXi 4.1 servers for various reasons then disable it again.
Not favouring the manual process of going into each host in vCenter --> Host --> Configuration --> Security profile etc etc I wanted to be able to run a script that would do this for me. And confirm afterwards I had turned it all back off.
That resulted in the following 3 PowerCLI scripts for viewing, starting and stopping the TSM-SSH service on all ESXi servers.


Note: Before running remember to run "Connect-VIServer vcenter.domain.local"

ViewServiceSSH.ps1

function ViewServiceSSH {
 $VMHost = Get-VMHost
 foreach ($VMHost in $VMHost) {
   Get-VMHostService -VMHost $VMHost | where {$_.Key -eq "TSM-SSH"} | Select @{N="VMHost";E={$VMHost.Name}},Key,Running
  }
}
ViewServiceSSH

Example Output:



StartServiceSSH.ps1

function StartServiceSSH {
 $VMHost = Get-VMHost
 foreach ($VMHost in $VMHost) {
   Get-VMHostService -VMHost $VMHost | where {$_.Key -eq "TSM-SSH"} | Start-VMHostService
  }
}
StartServiceSSH

StopServiceSSH.ps1

function StopServiceSSH {
 $VMHost = Get-VMHost
 foreach ($VMHost in $VMHost) {
   Get-VMHostService -VMHost $VMHost | where {$_.Key -eq "TSM-SSH"} | Stop-VMHostService
  }
}
StopServiceSSH