prerm is in libopenblas-dev 0.2.8-6ubuntu1.
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 | #!/bin/sh
set -e
if [ "$1" != "upgrade" ]
then
update-alternatives --remove libblas.so \
/usr/lib/openblas-base/libblas.so
fi
exit 0
|