How to include a launch file inside a launch file

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Assume we have a launch file called main_launch_file.launch to launch another launch file called first_launch_file.launch from the first_bot package.

The first_launch_file.launch file is within the folder named launch of the first_bot package

We can use the include tag in our main_launch_file.launch launch as given below

<launch> <include file="$(find first_bot)/launch/first_launch_file.launch" /> </launch>

Then when you run run roslaunch main_launch_file.launch , the nodes from the first_launch_file.launch will also be launched.