用于检测进程的shell脚本代码小结

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@maopiaopiao.com"

## 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