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2015-05-14 20:54:07 -0500 commented question roscore error, ROS_MASTER_URI

Thanks gvdhoorn for your time and suggestion. I will take notice of it, and thanks you again. Besides, the error has been solved. Best regards.

2015-05-14 20:45:46 -0500 received badge  Popular Question (source)
2015-05-14 06:42:44 -0500 answered a question get trouble in running roscore

In my opinion, the ``rosnode list" can be used in different terminals, and outputs the same response. I suggest try again or check the setting of .bashrc. Goodluck.

2015-05-14 06:33:13 -0500 asked a question roscore error, ROS_MASTER_URI

Hello! Everyone. I have encountered an roscore error. When I run roscore, the screenshot is presented as follows.

image description

I only open a terminal, and thus I am sure I do not run another roscore. Besides, when I run roslaunch, it does not print an error, but all wait. I guess whether the ROS_MASTER_URT set is right or not. Thanks in advance and best regards. The error is further presented as bleow.

roscore cannot run as another roscore/master is already running. 
Please kill other roscore/master processes before relaunching.
The ROS_MASTER_URI is http://yxg-Inspiron-5443:11311/
The traceback for the exception was written to the log file
2015-05-11 23:38:30 -0500 answered a question error in rosdep initialization

First, you should remove the /etc/ros/rosdep/sources.list.d/20-default.list; and then do this ''sudo rosdep init''. I work it out, you can try it.