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===rosbag===
rosbag<ref>{{Cite web|url=http://wiki.ros.org/rosbag|title=rosbag - ROS Wiki|website=wiki.ros.org|access-date=2019-04-23}}</ref> is a command line tool used to record and playback ROS message data. rosbag uses a file format called bags<ref>{{Cite web|url=http://wiki.ros.org/Bags|title=Bags - ROS Wiki|website=wiki.ros.org|access-date=2019-04-23}}</ref>, which log ROS messages by listening to topics and recording messages as they come in. Playing messages back from a bag is largely the same as having the original nodes which produced the data in the ROS computation graph, making bags a useful tool for recording data to be used in later development. While rosbag is a command line only tool, rqt_bag<ref>{{Cite web|url=http://wiki.ros.org/rqt_bag|title=rqt_bag - ROS Wiki|website=wiki.ros.org|access-date
===rosbash===
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