# Permission denied in modifying Move base params, how?

**URL:** <https://forum.ubiquityrobotics.com/t/permission-denied-in-modifying-move-base-params-how/858>\
**Category:** Uncategorized\
**Created:** [July 26, 2021, 9:18am UTC](https://forum.ubiquityrobotics.com/t/permission-denied-in-modifying-move-base-params-how/858 "2021-07-26T09:18:05Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![inmoov](https://forum.ubiquityrobotics.com/user_avatar/forum.ubiquityrobotics.com/inmoov/32/473_2.png) [@inmoov](https://forum.ubiquityrobotics.com/u/inmoov)\
**Post date:** [July 26, 2021, 9:18am UTC](https://forum.ubiquityrobotics.com/t/permission-denied-in-modifying-move-base-params-how/858/1 "2021-07-26T09:18:06Z")

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Hi Ubiquity Robotics, All,

I’m trying to modify Magni\_nav/move base’s param files (costmaps, local and costmaps)…but it keeps coming up as permission denied…,

please advise what I need to do in order so that I can modify these files…,

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**Author:** ![MoffKalast](https://forum.ubiquityrobotics.com/user_avatar/forum.ubiquityrobotics.com/moffkalast/32/214_2.png) [@MoffKalast](https://forum.ubiquityrobotics.com/u/MoffKalast)\
**Post date:** [July 26, 2021, 10:35am UTC](https://forum.ubiquityrobotics.com/t/permission-denied-in-modifying-move-base-params-how/858/2 "2021-07-26T10:35:04Z")

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If you’re modifying the installation in /etc then you’ll need sudo, those are linux system files and can only be modified by root.

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<div class="post-metadata">

**Author:** ![inmoov](https://forum.ubiquityrobotics.com/user_avatar/forum.ubiquityrobotics.com/inmoov/32/473_2.png) [@inmoov](https://forum.ubiquityrobotics.com/u/inmoov)\
**Post date:** [July 26, 2021, 2:58pm UTC](https://forum.ubiquityrobotics.com/t/permission-denied-in-modifying-move-base-params-how/858/3 "2021-07-26T14:58:47Z")

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thank you, @MoffKalast

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**Author:** ![anfederman](https://forum.ubiquityrobotics.com/user_avatar/forum.ubiquityrobotics.com/anfederman/32/141_2.png) [@anfederman](https://forum.ubiquityrobotics.com/u/anfederman)\
**Post date:** [July 31, 2021, 6:25pm UTC](https://forum.ubiquityrobotics.com/t/permission-denied-in-modifying-move-base-params-how/858/4 "2021-07-31T18:25:33Z")

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Depends on installation. If move\_base installed on a non Ubiquity distribution, the parameters might be installed in /opt/ROS or somewhere else with root permissions.