This file is indexed.

postinst is in libapache-gallery-perl 1.0.2-5.

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.

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#!/bin/sh

set -e

cachedir="/var/cache/www"
user="www-data"

if [ "x$1" = "xconfigure" ]; then
    if ! [ -d "$cachedir" ]; then
        (mkdir "$cachedir" && chown "$user" "$cachedir") || exit 0;
    fi;
fi;