restart apache gracefully

apache-graceful-restarter.sh

#!/bin/bash

check_process() {
  echo "$ts: checking $1"
  [ "$1" = "" ]  && return 0
  [ `pgrep -n $1` ] && return 1 || return 0
}

ts=`date +%T`
echo '$ts: stopping apache gracefully'
sudo service apache2 graceful-stop

while [ 1 ]; do 
  # timestamp
  ts=`date +%T`
  echo "$ts: begin checking... (5 sec interval)"
  check_process "apache2"
  [ $? -eq 0 ] && echo "$ts: not running, restarting..." && `sudo service apache2 restart > /dev/null` && break
  sleep 5
done