postinst is in reconf-inetd 1.120603.
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
# we should never fail in a way that breaks an installation
reconf-inetd || true
|