So I'm following this ROS tutorial (http://wiki.ros.org/ROS/Tutorials/CreatingPackage) and everything is working fine until I input "roscd beginner_tutorials" at the end of section 5.1 and get the error "roscd: command not found". I don't know enough about ROS to know exactly what lines do what and how important they are, but I think this line changes the current directory to beginner tutorials. I'm not sure if this is an important error but I've been searching for solutions for the past 30 minutes to no avail. For now I'm continuing the tutorial ignoring this error but if anyone can help solve this error, it would be appreciated.
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