自动重启僵死的httpd进程

#!/bin/bash
# Apache Process Monitor
# Restart Apache Web Server When It Goes Down
# -------------------------------------------------------------------------
# Copyright (c) 2003 nixCraft project <
# This script is licensed under GNU GPL version 2.0 or above
# -------------------------------------------------------------------------
# RHEL / CentOS / Fedora Linux restart command
RESTART="service httpd restart"
 
# uncomment if you are using Debian / Ubuntu Linux
#RESTART="/etc/init.d/apache2 restart"
 
#path to pgrep command
PGREP="/usr/bin/pgrep"
 
# find httpd pid
$PGREP httpd
 
if [ $? -eq 0 ]
then
 # restart apache
 $RESTART
fi