This file is indexed.

prerm is in exim4-daemon-heavy 4.84.2-2+deb8u5.

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

set -e

if [ -n "$EX4DEBUG" ]; then
  echo "now debugging $0 $@"
  set -x
fi

case "$1" in
	remove|upgrade)
    	if [ -x /etc/init.d/exim4 ]; then
		if [ -n "$EX4DEBUG" ]; then
		  netstat -tulpen
		  ls -al /var/run/exim4/
		  cat /var/run/exim4/exim.pid
		  pidof exim4
		fi
		if command -v invoke-rc.d >/dev/null 2>&1; then
		    invoke-rc.d exim4 stop
		else
		    /etc/init.d/exim4 stop
		fi
		if [ -n "$EX4DEBUG" ]; then
		  netstat -tulpen
		  ls -al /var/run/exim4/
		  cat /var/run/exim4/exim.pid
		  pidof exim4
		  if pidof exim4; then
		    echo >&2 "WARN: There are some exim4 processes still running after stopping exim"
		  fi
		fi
	fi
	;;
esac