This file is indexed.

preinst is in mini-dinstall 0.6.31ubuntu1.

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.

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#!/bin/sh

set -e

OLDDIR='/usr/lib/site-python/minidinstall'

if [ "$1" = upgrade ]; then
    if [ -d "$OLDDIR" ]; then
	printf "Removing old optimized Python files in %s\n" "$OLDDIR"
	for i in pyc pyo; do
		rm -f "$OLDDIR"/*.$i
	done
    fi
fi