postinst is in auth2db-common 0.2.5-2+dfsg-4.
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 | #!/bin/bash
set -e
# Mysql managing
. /usr/share/debconf/confmodule
. /usr/share/dbconfig-common/dpkg/postinst.mysql
dbc_generate_include=sh:/etc/auth2db/auth2db.conf
dbc_generate_include_owner="auth2db:www-data"
dbc_generate_include_perms='640'
dbc_go auth2db $@
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