# The proper way of remapping /cmd\_vel?

**URL:** <https://forum.ubiquityrobotics.com/t/the-proper-way-of-remapping-cmd-vel/1032>\
**Category:** Uncategorized\
**Created:** [January 4, 2023, 11:16pm UTC](https://forum.ubiquityrobotics.com/t/the-proper-way-of-remapping-cmd-vel/1032 "2023-01-04T23:16:16Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![CaptainGinyu](https://forum.ubiquityrobotics.com/user_avatar/forum.ubiquityrobotics.com/captainginyu/32/667_2.png) [@CaptainGinyu](https://forum.ubiquityrobotics.com/u/CaptainGinyu)\
**Post date:** [January 4, 2023, 11:16pm UTC](https://forum.ubiquityrobotics.com/t/the-proper-way-of-remapping-cmd-vel/1032/1 "2023-01-04T23:16:17Z")

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Hi, right now, I have remapped the /cmd\_vel topic into another name (basically the same name but with an extra prefix). The way I did this was to edit /opt/ros/noetic/share/magni\_bringup/launch/core\_launch.em . However, I was wondering if there was a better way of doing this? I’m worried that if that package gets updated via apt in the future, those changes would get overwritten.

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**Author:** ![CaptainGinyu](https://forum.ubiquityrobotics.com/user_avatar/forum.ubiquityrobotics.com/captainginyu/32/667_2.png) [@CaptainGinyu](https://forum.ubiquityrobotics.com/u/CaptainGinyu)\
**Post date:** [February 10, 2023, 9:15pm UTC](https://forum.ubiquityrobotics.com/t/the-proper-way-of-remapping-cmd-vel/1032/2 "2023-02-10T21:15:27Z")

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I never got a reply to this…