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PowerShell 7.3 - advanced patterns with Start-Process and Redirected Output

πŸ‘€ Views: 28 πŸ’¬ Answers: 1 πŸ“… Created: 2025-06-09
powershell start-process output-redirection

I'm experimenting with I'm working on a project and hit a roadblock. I'm trying to use `Start-Process` in PowerShell 7.3 to launch a command-line tool and capture its output to a file. However, I'm working with an unexpected behavior where the output file is empty, even though the command runs successfully and I can see the output when running it directly in the console. Here's the code I'm using: ```powershell $process = Start-Process -FilePath 'mytool.exe' -ArgumentList '--option value' -RedirectStandardOutput 'output.txt' -NoNewWindow -PassThru $process.WaitForExit() ``` The `output.txt` file is created, but it remains empty after the process completes. I've tried adding `-NoNewWindow` and using `-PassThru`, but nothing seems to work. Additionally, I've checked the permissions of the directory to ensure that PowerShell has write access. Interestingly, if I run the command directly in the console like this: ```powershell mytool.exe --option value > output.txt ``` It works perfectly, and the output is written correctly. I've also confirmed that `mytool.exe` doesn’t require any special environment variables or configurations when called from PowerShell. Is there a known scenario with `Start-Process` and output redirection in PowerShell 7.3, or is there something I'm missing here? Any suggestions would be greatly appreciated! For context: I'm using Powershell on Ubuntu.