#!/bin/sh
hn=`ps axu| grep httpd|wc -l`
if [ $hn -gt 1 ];then #gt (great then) = 大于
mn=`ps axu| grep 'mysql'| grep -v 'grep' | wc -l`
if [ $mn -lt 1 ];then #lt(less then) =
echo "`hostname -s`"
echo 'mysql service stop'
fi
fi
实例2
mn = `ps -axu|grep mysql|grep -v 'mysql'`
if [ $mn -ne 0 ]
then
HOST=`hostname -s`
news="mysql service is up"
fi