Run WSL seamlessly from powershell

run-wsl.ps1

# Windows PowerShell Cookbook is AWESOME

# Turns out you can hook into every aspect of the invocation of a CLI command,
# so when I run a command that's not in powershell, it will also try to run it in WSL
$ExecutionContext.SessionState.InvokeCommand.CommandNotFoundAction = {
  param($CommandName, $CommandLookupEventArgs)
  # There was a get- that prefixes the command
  $realCommand = $CommandName -replace "^get-",""
  # Probably more unsafe things, but I can't think of any
  $unsafeCommands = @("rm")
  # This scriptblock gets executed
  $CommandLookupEventArgs.CommandScriptBlock = {
    if ($realCommand -notin $unsafeCommands) {
      # Clean up slashes for linux
      $realArgs = (($args -replace "C:\\","/mnt/c/") -replace "\\","/")
      # And run in bash
      bash -c "$realCommand $realArgs"
    }
  }.GetNewClosure()
  # Not strictly necessary but it was in the cookbook.
  $CommandLookupEventArgs.StopSearch = $true
}