postinst is in tcpd 7.6.q-27.
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 18 19 20 21 22 | #!/bin/sh -e
upgrade_quirks() {
  # replaced by a symlink long ago but dpkg fails to do it on upgrades
  if [ -d /usr/share/doc/tcpd -a \
      ! -L /usr/share/doc/tcpd ]; then
    rmdir /usr/share/doc/tcpd
    ln -s /usr/share/doc/libwrap0 /usr/share/doc/tcpd
  fi
  return 0
}
case "$1" in
    configure)
    upgrade_quirks "$@"
    ;;
esac
exit 0
 |