Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

Revision history [back]

The ROS_MASTER_URI environment variable should be used if you want to specify what's the uri of the master such that other nodes can find it.

If you want to run more than one roscore on the same machine you have to use the -p option to specify a different port.

TERMINAL1

roscore

TERMINAL 2

roscore -p <PORT_NUMBER>

ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.