#!/usr/bin/env bash

trim() {
    local var="$*"
    var="${var#"${var%%[![:space:]]*}"}"   # remove leading whitespace characters
    var="${var%"${var##*[![:space:]]}"}"   # remove trailing whitespace characters
    echo -n "$var"
}

PID="$(ps -A -o pid,cmd | grep /usr/sbin/postfwd | grep -v grep | head -n 1 | awk '{print $1}')" 

if [[  -n "$(trim "$PID")" ]] ; then
   kill $PID 
   sleep 2 
fi

systemctl restart postfwd

exit 0