preinst is in freetds-dev 0.91-5.
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 | #!/bin/sh
set -e
if [ -L /usr/share/doc/freetds-dev ]; then
rm -f /usr/share/doc/freetds-dev
fi
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