一个简单的shell脚本，用来找出关键的服务是否正在运行，适用于Linux或Unix操作系统。

该脚本还可以使用电子邮件发送通知。

代码：

#!/bin/bash

# Name : service.chk 服务检测脚本

## 根据自己的环境修改

_pgrep="/usr/bin/pgrep"

_mail="/usr/bin/mail"

## 环境变量

_chklist="/usr/bin/php-cgi /usr/sbin/nginx /usr/sbin/lighttpd /usr/sbin/mysqld /usr/sbin/apache2 /usr/sbin/named /usr/sbin/pgsqld"

## yes | no

_sendemail="no"

## email

_email="test@jb51.net"

## 不要修改如下配置

_failed="false"

_service="Service:"

_running() {

local p="${1##*/}"

local s="true"

$_pgrep "${p}" >/dev/null || { s="false"; _failed="true"; _service="${_service} $1,"; }

[[ "$s" == "true" ]] && echo "$1 running" || { echo -n "$1 not running"; [[ ! -f "$1" ]] && echo " [ $1 not found ]" || echo ; }

}

## header

echo "Service status on ${HOSTNAME} @ $(date)"

echo "------------------------------------------------------"

## Check if your service is running or not

for s in $_chklist

do

_running "$s"

done

## Send a quick email update (good for cron jobs) ##

[[ "$_failed" == "true" && "$_sendemail" == "yes" ]] && { _mess="$_service failed on $HOSTNAME @ $(date)";

$_mail -s 'Service not found' "$_email" < "${_mess}";

}

结果：

下面是一些小段代码，大家也可以参考下

脚本一:

#!/bin/sh

program=XXXX     #进程名

sn=`ps -ef | grep $program | grep -v grep |awk '{print $2}'`  #获得进程端口号

if [ "${sn}" = "" ]    #如果为空,表示进程未启动

then

nohup /home/oracle/XXXX  &    #后台启动进程

echo start ok !

else

echo running

fi

脚本二:

#!/bin/sh

ps -ef |grep ./FileServer > /dev/null 2>&1  #检测进程写入/dev/null

if [ $? -eq 0 ]  #0为正常

then

echo logprocess run ok!

else

nohup /home/oracle/XXXX &

echo start ok !

fi

脚本三:

#!/bin/sh

count=`ps -fe |grep "a.out" | grep -v "grep" | wc -l`

if [ $count -lt 1 ]; then

/root/sh/restart.sh

脚本四:

PNAME="authd"

PATHNAME=/root/cauthd/build/

LENGTH=`ps -ef|grep "$PNAME"|grep -v grep|cut -b 49-200|wc -c `

if test $LENGTH -eq 0

then

cd $PATHNAME

nohup $PNAME >/dev/null

脚本五:

#! /bin/bash

echo "请输入进程名:"

read process

echo "你要查找的进程是 $process ,正在查找..."

ps > text1

grep "$process" text1

declare -i a=$?

if [ $a -eq 0 ]

then

echo "该进程存在"

else

echo "该进程不存在"

fi

rm text1