get trouble in running roscore
I'm a beginner. I entered "roscore" in the terminal, but I couln't get response when entering other command. The response I got after I entered "roscore" as follow.
llq@ubuntu:~$ roscore ... logging to /home/llq/.ros/log/eb7e1dc8-e33a-11e0-bfba-f46d04bbb18e/roslaunch-ubuntu-4399.log Checking log directory for disk usage. This may take awhile. Press Ctrl-C to interrupt Done checking log file disk usage. Usage is <1GB.
started roslaunch server http://localhost:48966/ ros_comm version 1.6.2
SUMMARY
PARAMETERS * /rosversion * /rosdistro
NODES
auto-starting new master process[master]: started with pid [4413] ROS_MASTER_URI=http://localhost:11311/
setting /run_id to eb7e1dc8-e33a-11e0-bfba-f46d04bbb18e process[rosout-1]: started with pid [4426] started core service [/rosout]
If I enter other commands like "rosnode list", it doesn't respond. Where the problem is?