René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"ssh command can't spawn a proxy command via \"exec\" from a pwsh 7.3.0 session  ","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\nWhen using an `ssh` command with a proxy host (`-J`) parameter on a Mac, it tries to relaunch the command using `exec`. Before 7.3.0 this worked through a workaround `exec` file that was created in `/usr/local/microsoft/powershell/7`:\r\n```powershell\r\n#!/usr/bin/env pwsh\r\nparam($command)\r\n\r\n\u0026 $command @args\r\n```\r\n\r\nNow, after 7.3.0 upgrade, with or without the \"exec\" file, the command returns an error whenever attempting to spawn a proxy command.\r\n\r\n### Expected behavior\r\n\r\n```console\r\n(bash)$ ssh 10.1.0.12 -J proxyhost.local -v\r\nOpenSSH_8.6p1, LibreSSL 3.3.6\r\ndebug1: Setting implicit ProxyCommand from ProxyJump: ssh -v -W '[%h]:%p' proxyhost.local\r\ndebug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling\r\ndebug1: Executing proxy command: exec ssh -v -W '[10.1.0.12]:22' proxyhost.local\r\ndebug1: identity file /Users/user/.ssh/id_rsa type 0\r\ndebug1: identity file /Users/user/.ssh/id_rsa-cert type -1\r\ndebug1: Local version string SSH-2.0-OpenSSH_8.6\r\nOpenSSH_8.6p1, LibreSSL 3.3.6\r\ndebug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling\r\ndebug1: Connecting to proxyhost.local port 22.\r\ndebug1: Connection established.\r\n```\r\n\r\n\r\n### Actual behavior\r\n\r\n```console\r\nPS\u003e ssh 10.1.0.12 -J proxyhost.local -v\r\nOpenSSH_8.6p1, LibreSSL 3.3.6\r\ndebug1: Setting implicit ProxyCommand from ProxyJump: /usr/bin/ssh -v -W '[%h]:%p' proxyhost.local\r\ndebug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling\r\ndebug1: Executing proxy command: exec /usr/bin/ssh -v -W '[10.1.0.12]:22' proxyhost.local\r\ndebug1: identity file /Users/user/.ssh/id_rsa type 0\r\ndebug1: identity file /Users/user/.ssh/id_rsa-cert type -1\r\ndebug1: Local version string SSH-2.0-OpenSSH_8.6\r\ndebug1: kex_exchange_identification: banner line 0: \\033[31;1mSwitch-Process: \\033[31;1mA positional parameter cannot be found that accepts argument '/usr/bin/ssh'.\\033[0m\r\nkex_exchange_identification: Connection closed by remote host\r\nConnection closed by UNKNOWN port 65535\r\n```\r\n\r\n\r\n### Error details\r\n\r\n```console\r\n$null\r\n```\r\n\r\n\r\n### Environment data\r\n\r\n```powershell\r\nName                           Value\r\n----                           -----\r\nPSVersion                      7.3.0\r\nPSEdition                      Core\r\nGitCommitId                    7.3.0\r\nOS                             Darwin 21.6.0 Darwin Kernel Version 21.6.0: Thu Sep 29 20:13:56 PDT 2022; root:xnu-8020.240.7~1/RELEASE_ARM64_T6000\r\nPlatform                       Unix\r\nPSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}\r\nPSRemotingProtocolVersion      2.3\r\nSerializationVersion           1.1.0.1\r\nWSManStackVersion              3.0\r\n```\r\n\r\n\r\n### Visuals\r\n\r\n![image](https://user-images.githubusercontent.com/30303784/201791830-b2b05189-2a8f-471d-a6ba-336a702bef66.png)\r\n","author":{"url":"https://github.com/nvarscar","@type":"Person","name":"nvarscar"},"datePublished":"2022-11-14T23:58:01.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/18561/PowerShell/issues/18561"}