I was following this vid tutorial on YouTube on controlling joints. https://www.youtube.com/watch?v=3qCh-p-hzCM. After I typed out the URDF, config and launch files, I ran the roslaunch command from the terminal. I get the following output.
... logging to /home/varun/.ros/log/2244837a-447c-11e8-a7c2-7c67a2be706c/roslaunch-varun-5577-22296.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://varun-5577:46733/
SUMMARY
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PARAMETERS
* /robot_description:
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