Why roscore takes such a long time to be created?
I initially used "$roscore to"create the master and it did take 10 seconds to be done. However when I tried an hour later to see the detail of the node by "$rosnod list" the following message appeared: "ERROR: Unable to communicate with the master!" I did try to create another master node by $roscore but it took half o=an hour and still yet to be showed. Can someone kindly explain why it takes such a long time?
Thank you in advance
best regards
Did you ever set one of the environment variables
ROS_IP
,ROS_HOSTNAME
,ROS_MASTER_URI
or similar?Yes I did it once and it was ok it did work but I closed terminal due to an error and it didn't work in the same manner.
Did you add those to
$HOME/.bashrc
?