This file is indexed.

prerm is in libatlas-base-dev 3.8.4-3build1.

This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.

The actual contents of the file can be viewed below.

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#!/bin/sh

set -e

if [ "$1" != "upgrade" ]
then
    update-alternatives --remove libblas.so \
	/usr/lib/atlas-base/atlas/libblas.so

	update-alternatives --remove liblapack.so \
        /usr/lib/atlas-base/atlas/liblapack.so

fi



exit 0