This file is indexed.

preinst is in libatlas-base-dev 3.10.2-9.

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

# In 3.10.1-1, some symlinks were moved out of the alternatives system
# The following ensures that they are freed by the alternatives system before unpacking
if [ $1 = "upgrade" -a `dpkg --compare-versions "$2" ge 3.8.4-4~exp1` -a `dpkg --compare-versions "$2" lt 3.10.1-1` ]
then
    update-alternatives --remove libblas.so	/usr/lib/atlas-base/atlas/libblas.so
fi

# Cleanup obsolete alternatives dating back to lenny
if [ "$1" = "install" ] || [ "$1" = "upgrade" ]
then
    update-alternatives --remove libblas-3.so /usr/lib/atlas/libblas.so
    update-alternatives --remove liblapack-3.so /usr/lib/atlas/liblapack.so
fi

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.



exit 0