preinst is in libmilter-dev 8.15.2-8.
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 | #!/bin/sh
set -e
PACKAGE=libmilter-dev;
if [ -L /usr/share/doc/$PACKAGE ]; then
# /usr/share/doc/$PACKAGE was a symlink to /usr/share/doc/sendmail
rm /usr/share/doc/$PACKAGE
fi
if [ -L /usr/share/bug/$PACKAGE ]; then
rm /usr/share/bug/$PACKAGE
fi
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