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How to get only time stamp in a big topic in a command line

asked 2020-09-06 22:10:32 -0500

bigbellmercy
86 ●1 ●7 ●6

Because the size of a topic is quite big (like point cloud), the 'rostopic echo' command cannot show the time stamp in a terminal because of the scroll pressure and 'rqt' software freezes itself when 'topic monitor' is enabled for the topic.

So, how can we get only time stamp in a big topic by a command line in a terminal?

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