Publish a SDL Tridion page trhough PowerShell. Prerequisites: http://code.google.com/p/tridion-powershell-modules/ and any Tridion 2011+ server.

publish-a-page.ps1

# Set up a Tridion Core Service client for the Content Manager server cms.server.com.
# The 2013-SP1 label is for the CM server version, other valid entries are 2011-SP1 and 2013.
Import-Module Tridion-CoreService
Set-TridionCoreServiceSettings cms.server.com 2013-SP1
$client = Get-TridionCoreServiceClient

# Set a publish instruction with resolve instruction and render instruction. These are all standard
# instructions, nothing special here but you can use this to create a special publinshing action. 
$publishIntructionData = New-Object Tridion.ContentManager.CoreService.Client.PublishInstructionData
$publishIntructionData.RenderInstruction = New-Object Tridion.ContentManager.CoreService.Client.RenderInstructionData 
$publishIntructionData.ResolveInstruction = New-Object Tridion.ContentManager.CoreService.Client.ResolveInstructionData 

# Set readOptions, again very standard.
$readOptions = New-Object Tridion.ContentManager.CoreService.Client.ReadOptions

# Publish the page tcm:69-6164-64 to target tcm:0-1-65537 with publish priority normal.
$client.Publish("tcm:69-6164-64", $publishIntructionData, "tcm:0-1-65537",
    [Tridion.ContentManager.CoreService.Client.PublishPriority]::Normal, $readOptions)