/usr/share/sagemath/bin/sage-native-execute is in sagemath-common 8.1-7ubuntu1.
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
# The entire sage-native-execute should probably be removed, but wait
# for http://trac.sagemath.org/ticket/9386
"$@"
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