I want my PowerShell script to stop when any of the commands I run fail (like set -e in bash). I'm using both Powershell commands (New-Object System.Net.WebClient) and programs (.\setup.exe).
Windows – How to stop a PowerShell script on the first error
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Best Answer
$ErrorActionPreference = "Stop"will get you part of the way there (i.e. this works great for cmdlets).However for EXEs you're going to need to check
$LastExitCodeyourself after every exe invocation and determine whether that failed or not. Unfortunately I don't think PowerShell can help here because on Windows, EXEs aren't terribly consistent on what constitutes a "success" or "failure" exit code. Most follow the UNIX standard of 0 indicating success but not all do. Check out the CheckLastExitCode function in this blog post. You might find it useful.