/usr/share/nav_msgs/msg/Path.msg is in libnav-msgs-dev 1.12.3-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | #An array of poses that represents a Path for a robot to follow
Header header
geometry_msgs/PoseStamped[] poses
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