This file is indexed.

prerm is in libatlas3-base 3.10.1-4.

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
# Clean up the old declarations
    update-alternatives --display libblas.so.3gf >/dev/null 2>&1 && update-alternatives --remove-all libblas.so.3gf
    update-alternatives --display liblapack.so.3gf >/dev/null 2>&1 && update-alternatives --remove-all liblapack.so.3gf
fi

if [ "$1" != "upgrade" ]
then
    update-alternatives --remove libblas.so.3 \
	/usr/lib/atlas-base/atlas/libblas.so.3

    update-alternatives --remove liblapack.so.3 \
        /usr/lib/atlas-base/atlas/liblapack.so.3
fi



exit 0