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.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | #!/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
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