postinst is in freeradius-ldap 2.2.8+dfsg-0.1build2.
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 | #! /bin/sh
set -e
case "$1" in
  configure)
        if [ -x "`which invoke-rc.d 2>/dev/null`" ]; then
          invoke-rc.d freeradius force-reload
        else
          /etc/init.d/freeradius force-reload
        fi
        ;;
  abort-upgrade)
        ;;
  abort-remove)
        ;;
  abort-deconfigure)
        ;;
esac
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