# Command line options

**URL:** <https://forum.quantasylum.com/t/command-line-options/2127>\
**Category:** Uncategorized\
**Created:** [December 13, 2025, 11:50am UTC](https://forum.quantasylum.com/t/command-line-options/2127 "2025-12-13T11:50:52Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Gerrittube](https://avatars.discourse-cdn.com/v4/letter/g/3be4f8/32.png) [@Gerrittube](https://forum.quantasylum.com/u/Gerrittube)\
**Post date:** [December 13, 2025, 11:50am UTC](https://forum.quantasylum.com/t/command-line-options/2127/1 "2025-12-13T11:50:52Z")

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Where can we read more abut possible command line options. I know there are some, but the explanations about their usability is limited. Is there a list with all options and good explanations somewhere? I’m using a QA403…

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**Author:** ![matt](https://avatars.discourse-cdn.com/v4/letter/m/a6a055/32.png) [@matt](https://forum.quantasylum.com/u/matt)\
**Post date:** [December 18, 2025, 12:30am UTC](https://forum.quantasylum.com/t/command-line-options/2127/2 "2025-12-18T00:30:10Z")

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Hi @Gerrittube, you can do a `qa40x -h` from a command line and you’ll see the following:

 ![image](https://canada1.discourse-cdn.com/flex032/uploads/quantasylum/original/2X/e/e674857e85a1f7ebf57de3e5dee28a3fb0f78954.png)

Note that outside of `-L` and `-C` these are not generally needed, and/or are experimental, and/or you might be asked to try by support in certain cases.

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<div class="post-metadata">

**Author:** ![Gerrittube](https://avatars.discourse-cdn.com/v4/letter/g/3be4f8/32.png) [@Gerrittube](https://forum.quantasylum.com/u/Gerrittube)\
**Post date:** [December 18, 2025, 9:07pm UTC](https://forum.quantasylum.com/t/command-line-options/2127/3 "2025-12-18T21:07:40Z")

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OK, that’s a good help. Where are the log files stored and with what name(s)?

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**Author:** ![matt](https://avatars.discourse-cdn.com/v4/letter/m/a6a055/32.png) [@matt](https://forum.quantasylum.com/u/matt)\
**Post date:** [January 2, 2026, 10:26pm UTC](https://forum.quantasylum.com/t/command-line-options/2127/4 "2026-01-02T22:26:46Z")

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Exceptions are stored here:

`C:\Users\USERNAME\Documents\QuantAsylum\QA40x\ExceptionLog`

And logs are stored here:

`C:\Users\USERNAME\Documents\QuantAsylum\QA40x\Log`

Make sure you have logging turned on to have logs created.