/usr/share/python/runtime.d/gasic.rtupdate is in gasic 0.0.r19-3.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6  | #! /bin/sh
set -e
if [ "$1" = rtupdate ]; then
	pyclean -p gasic /usr/share/gasic
	pycompile -p gasic  /usr/share/gasic
fi
 |