How to store variables to disk so you can use them next time the PowerShell script runs?
$foo | Export-CliXml foo.xmlthen later
$foo = Import-CliXml foo.xmlNote that if $foo represents a live object, when you restore it, you are only going to get its properties. However the type information is more-or-less preserved. For example if you save out a System.Diagnostics.Process object, when you rehydrate it you will have a Deserialzed.System.Diagnostics.Process object.
BTW if you need to store/retrieve multiple variables, you can do that like so:
Get-Variable bla* | Export-Clixml vars.xmlImport-Clixml .\vars.xml | %{ Set-Variable $_.Name $_.Value }