This file is indexed.

postinst is in linux-grsec-base 6.

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 -e

case "$1" in
  configure)
    addgroup --gid 64040 --system --quiet grsec-tpe ||true
    addgroup --gid 64041 --system --quiet grsec-sock-all ||true
    addgroup --gid 64042 --system --quiet grsec-sock-clt ||true
    addgroup --gid 64043 --system --quiet grsec-sock-srv ||true
    addgroup --gid 64044 --system --quiet grsec-proc ||true
    ;;
esac