If you are using some type of *nix system, the simplest way to get the last 100 lines of a log file in reverse order (that I have used) is this command:
tac /path/to/file.log | head -100
The tac command (cat backwards) outputs the lines of the file in reverse order -- then the head command returns only the first N lines. If you can put that command into an exec node, then the output could be send to a ui_template node for rendering.
Copyright OpenJS Foundation and Node-RED contributors. All rights reserved. The OpenJS Foundation has registered trademarks and uses trademarks. For a list of trademarks of the OpenJS Foundation, please see our Trademark Policy and Trademark List. Trademarks and logos not indicated on the list of OpenJS Foundation trademarks are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
The OpenJS Foundation | Terms of Use | Privacy Policy | OpenJS Foundation Bylaws | Trademark Policy | Trademark List | Cookie Policy