/usr/share/dx/samples/scripts/Extract is in dxsamples 4.4.0-3.
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 6 7 8 | // Import the electron density field
electrondensity = Import("watermolecule");
// Extract the positions component.
positions = Extract(electrondensity,"positions");
// Print the positions component
Print(positions);
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