一個簡單的shell腳本，用來找出關鍵的服務是否正在運行，適用于Linux或Unix操作系統。
該腳本還可以使用電子郵件發送通知。

代碼：

代碼如下:
#!/bin/bash
# Name : service.chk 服務檢測腳本
## 根據自己的環境修改
_pgrep="/usr/bin/pgrep"
_mail="/usr/bin/mail"

## 環境變量
_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}";
}

結果：

下面是一些小段代碼，大家也可以參考下

腳本一:

代碼如下:
#!/bin/sh
program=XXXX     #進程名
sn=`ps -ef | grep $program | grep -v grep |awk '{print $2}'`  #獲得進程端口號
if [ "${sn}" = "" ]    #如果為空,表示進程未啟動
then
nohup /home/oracle/XXXX  &    #后臺啟動進程
echo start ok !
else
echo running
fi

 

腳本二:

代碼如下:
#!/bin/sh
ps -ef |grep ./FileServer > /dev/null 2>&1  #檢測進程寫入/dev/null
if [ $? -eq 0 ]  #0為正常
then
echo logprocess run ok!
else
nohup /home/oracle/XXXX &

echo start ok !
fi

 

腳本三:

代碼如下:
#!/bin/sh

count=`ps -fe |grep "a.out" | grep -v "grep" | wc -l`
if [ $count -lt 1 ]; then
/root/sh/restart.sh

 

腳本四:

代碼如下:
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

 

腳本五:

代碼如下:
#! /bin/bash
echo "請輸入進程名:"
read process
echo "你要查找的進程是 $process ,正在查找..."
ps > text1
grep "$process" text1

declare -i a=$?
if [ $a -eq 0 ]
then
echo "該進程存在"
else
echo "該進程不存在"