/usr/share/std_msgs/msg/UInt32MultiArray.msg is in ros-std-msgs 0.5.11-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 | # Please look at the MultiArrayLayout message definition for
# documentation on all multiarrays.
MultiArrayLayout layout # specification of data layout
uint32[] data # array of data
|