/usr/include/liggghts/style_cfd_datacoupling.h is in libliggghts-dev 2.3.8-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | #include "cfd_datacoupling_file.h"
#include "cfd_datacoupling_mpi.h"
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