René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Stop-Computer, Restart-Computer on Unix: inability to detect failure.","articleBody":"### Prerequisites\r\n\r\n- [X] Write a descriptive title.\r\n- [X] Make sure you are able to repro it on the [latest released version](https://github.com/PowerShell/PowerShell/releases)\r\n- [X] Search the existing issues.\r\n- [X] Refer to the [FAQ](https://github.com/PowerShell/PowerShell/blob/master/docs/FAQ.md).\r\n- [X] Refer to [Differences between Windows PowerShell 5.1 and PowerShell](https://docs.microsoft.com/powershell/scripting/whats-new/differences-from-windows-powershell).\r\n\r\n### Steps to reproduce\r\n\r\nOn Unix, these commands defer to the native `/sbin/shutdown` utility.\r\n\r\nHowever, the way in which this is currently implemented makes it impossible to detect failure _programmatically_:\r\n\r\nE.g., on macOS, _without_ using `sudo`, run the following:\r\n\r\n```\r\n# Run *without* sudo, so as to provoke failure of /sbin/shutdown\r\nStop-Computer -ErrorVariable e 2\u003e$null || Write-Error \"Shutdown initiation failed.\"\r\n```\r\n\r\nNote that running `/sbin/shutdown` directly in the scenario above:\r\n\r\n* prints `shutdown: NOT super-user` to stderr\r\n* reports `1` as its exit code\r\n\r\n\r\n### Expected behavior\r\n\r\nNo visible output (due to `2\u003e$null`), the error message stored in `$e`, and `$?` indicating `$false` so that the `||` clause is triggered.\r\n\r\n\r\n### Actual behavior\r\n\r\n`shutdown`'s stderr prints directly to the terminal, bypassing all PowerShell streams.\r\n`$?` reflects `$true` afterwards.\r\n\r\nIn other words: there is no way to detect failure.\r\n\r\n\r\n### Error details\r\n\r\n_No response_\r\n\r\n### Environment data\r\n\r\n```powershell\r\nPowerShell 7.4.0-preview.3 on macOS and Linux\r\n```\r\n\r\n\r\n### Visuals\r\n\r\n_No response_","author":{"url":"https://github.com/mklement0","@type":"Person","name":"mklement0"},"datePublished":"2023-06-14T15:26:48.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/19802/PowerShell/issues/19802"}