Whenever you enter a command in PowerShell, a series of events takes place to figure out where the command is located. This starts with a PreCommandLookupAction which you can use to log commands. Have a look at this:
$ExecutionContext.InvokeCommand.PreCommandLookupAction = { param ( [string] $Command, [Management.Automation.CommandLookupEventArgs] $Obj ) $whitelist = @( 'prompt', 'out-default', 'psconsolehostreadline', 'Microsoft.PowerShell.Core\Set-StrictMode' ) if ($Command -notin $whitelist -and $Obj.CommandOrigin -eq 'Runspace') { $host.UI.WriteLine('Yellow','White',$Command) } }
When you run this, every command you enter will be echoed to the console – except for the commands listed in $whitelist. This illustrates how the PreCommandLookupAction works: it fires whenever you enter a command, and you could write the commands to a log file as well.
psconf.eu – PowerShell Conference EU 2019 – June 4-7, Hannover Germany – visit www.psconf.eu There aren’t too many trainings around for experienced PowerShell scripters where you really still learn something new. But there’s one place you don’t want to miss: PowerShell Conference EU – with 40 renown international speakers including PowerShell team members and MVPs, plus 350 professional and creative PowerShell scripters. Registration is open at www.psconf.eu, and the full 3-track 4-days agenda becomes available soon. Once a year it’s just a smart move to come together, update know-how, learn about security and mitigations, and bring home fresh ideas and authoritative guidance. We’d sure love to see and hear from you!
