preinst is in python-zookeeper 3.4.10-3.
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 | #!/bin/sh
set -e
case "$1" in
install|upgrade)
DOCDIR=/usr/share/doc/python-zookeeper
if [ -L $DOCDIR ]; then
rm $DOCDIR
fi
;;
esac
exit 0
|