前言：
在日常工作中，但凡你要跟服务器打交道，一定离不开的神器便是shell脚本，shell脚本可以极大的提高工程师的工作效率，避免一些认为因素导致的手误。那么今天圈圈就给大家分享28个shell脚本，希望对大家有帮助，脚本比较多比较长，一时间记不住可以先收藏，用到的时候及时拿出来比对一下即可！
1. 轮询检测Apache状态并启用钉钉报警
#!/bin/bash
shell_user="root"
shell_domain="apache"
shell_list="/root/ip_list"
shell_row=`cat $shell_list |wc -l`
function trans_text(){
text=$1
curl 'https://oapi.dingtalk.com/robot/send?access_token=b4fcf5862088a1bc7f2bf66a' -H'Content-Type: application/json' -d'{ #指定钉钉机器人hook地址
"msgtype": "text",
"text": {
"content": "'"$text"'"
},
}'
}
function apache_check_80(){
ip=$1
URL="http://$ip/index.html"
HTTP_CODE=`curl -o /dev/null -s -w "%{http_code}" "${URL}"`
if [ $HTTP_CODE != 200 ]
then
trans_text "
=================================================================
\n $ip Apache 服务器状态异常，网页返回码: '"$HTTP_CODE"' 请及时处理 ! \n
================================================================= \n"
fi
}
while true
do
shell_list="/root/ip_list"
shell_row=`cat $shell_list |wc -l`
for temp in `seq 1 $shell_row`
do
Ip_Addr=`cat $shell_list |head -n $temp |tail -n 1`
apache_check_80 $Ip_Addr
done
sleep 10
done
2. 一台监控主机，一台被监控主机。被监控主机分区使用率大于80%，就发告警邮件。放到crontab里面，每10分钟执行一次
#！/bin/bash
FSMAX="80"
remote_user='root'
remote_ip=(IP地址列表)
ip_num='0'
while [ "$ip_num" -le "$(expr ${#remote_ip[@]} -l)"]
do
read_num='1'
ssh "$remote_user"@"${remote_ip[$ip_num]}" df -h > /tmp/diskcheck_tmp
grep '^/dev/*' /tmp/diskcheck_tmp | awk '{print $5}'|sed 's/\%//g' > /tmp/diskcheck_num_tmp
while [ "$read_num" -le $(wc -l < /tmp/diskcheck_num_tmp) ]
do
size=$(sed -n "$read_num" 'p' /tmp/diskcheck_num_tmp)
if [ "size" -gt "$FSMAX" ]
then
$(grep '^/dev/*' /tmp/diskcheck_tmp |sed -n $read_num'p' > /tmp/disk_check_mail)
$(echo ${remote_ip[$ip_num]}) >> /tmp/disk_check_mail)
$(mail -s "diskcheck_alert" admin < /tmp/disk_check_mail)
fi
read_num=$(expr $read_num + 1)
done
ip_num=$(expr $ip_num + 1)
done
3.监控主机的磁盘空间,当使用空间超过90％就通过发mail来发警告
#!/bin/bash
#monitor available disk space
#提取本服务器的IP地址信息
IP=`ifconfig eth0 | grep "inet addr" | cut -f 2 -d ":" | cut -f 1 -d " "`
SPACE=` df -hP | awk '{print int($5)}'`
if [ $SPACE -ge 90 ]
then
echo "$IP 服务器 磁盘空间 使用率已经超过90%，请及时处理。"|mail -s "$IP 服务器硬盘告警，
公众号：Geek安全" fty89@163.com
fi
4. 自动ftp上传
#! /bin/bash
ftp -n << END_FTP
open 192.168.1.22
user test testing //用户名test 密码：testing
binary
prompt off //关闭提示
mput files //上传files文件
close
bye
END_FTP
5.mysqlbak.sh备份数据库目录脚本
#!/bin/bash
DAY=`date +%Y%m%d`
SIZE=`du -sh /var/lib/mysql`
echo "Date: $DAY" >> /tmp/dbinfo.txt
echo "Data Size: $SIZE" >> /tmp/dbinfo.txt
cd /opt/dbbak &> /dev/null || mkdir /opt/dbbak
tar zcf /opt/dbbak/mysqlbak-${DAY}.tar.gz /var/lib/mysql /tmp/dbinfo.txt &> /dev/null
rm -f /tmp/dbinfo.txt
crontab-e
55 23 */3 * * /opt/dbbak/dbbak.sh
6.打印彩虹
declare -a ary
for i in `seq 40 49`
do
ary[$i]=" "
echo -en "\e[$i;5m ${ary[@]}\e[;0m"
done
declare -a ary
for s in `seq 1 10000`
do
for i in `seq 40 49`
do
ary[$i]=" "
echo -en "\e[$i;5m ${ary[@]}\e[;0m"
done
done
7.打印菱形
#!/bin/bash
for (( i = 1; i < 12; i++))
do
if [[ $i -le 6 ]]
then
for ((j = $((12-i)); j > i; j--))
do
echo -n " "
done
for ((m = 1; m <= $((2*i-1)); m++))
do
echo -n "* "
done
echo ""
#*****************************************************************************
elif [[ $i -gt 6 ]]
then
n=$((12-i))
for ((j = $((12-n)); j > n; j--))
do
echo -n " "
done
for ((m = 1; m <= $((2*n-1)); m++))
do
echo -n "* "
done
echo ""
fi
done
8.expect实现远程登陆自动交互
#!/usr/bin/expect -f
set ipaddress [lindex $argv 0]
set passwd [lindex $argv 1]
set timeout 30
spawn ssh-copy-id root@$ipaddress
expect {
"yes/no" { send "yes\r";exp_continue }
"password:" { send "$passwd\r" }
}
#expect "*from*"
#send "mkdir -p ./tmp/testfile\r"
#send "exit\r"
#expect "#" #i# 命令运行完, 你要期待一个结果, 结果就是返回shell提示符了(是# 或者$)
9.http心跳检测
#!/bin/bash
function MyInstall
{
if ! rpm -qa |grep -q "^$1"
then
yum install $1
if [ $? -eq 0 ]
then
echo -e "$i install is ok\n"
else
echo -e "$1 install no\n"
fi
else
echo -e "yi an zhuang ! \n"
fi
}
for ins in mysql php httpd
do
MyInstall $ins
done
12.shell实现插入排序
#!/bin/bash
declare -a array
for i in `seq 1 10`
do
array[$i]=$RANDOM
done
echo -e "Array_1: ${array[@]}"
for (( x=1;x<=9;x++ ))
do
for(( y=1;y<=9;y++ ))
do
if [ ${array[$y]} -gt ${array[$y+1]} ]
then
temp=${array[$y]}
array[$y]=${array[$y+1]}
array[$y+1]=$temp
fi
done
done
echo -e "Array_2: ${array[@]}"
13.bash实现动态进度条
#!/bin/bash
i=0
bar=''
index=0
arr=( "|" "/" "-" "\\" )
while [ $i -le 100 ]
do
let index=index%4
printf "[%-100s][%d%%][\e[43;46;1m%c\e[0m]\r" "$bar" "$i" "${arr[$index]}"
let i++
let index++
usleep 30000
bar+='#'
clear
done
printf "\n"
14. 根据文件内容创建账号
#!/bin/bash
for Uname in `cat /root/useradd.txt |gawk '{print $1}'`
do
id $Uname &> /dev/null
if [ $? -eq 0 ]
then
echo -e "这个账号已存在!来源：微信公众号【网络技术干货圈】"
continue
fi
for Upasswd in `cat /root/useradd.txt |gawk '{print $2}'`
do
useradd $Uname &> /dev/null
echo "$Upasswd" |passwd --stdin $Uname &> /dev/null
if [ $? -eq 0 ]
then
echo -e "账号创建成功!"
else
echo -e "创建失败!"
fi
done
done
15. 红色进度条
#!/bin/bash
declare -a ary
for i in `seq 0 20`
do
ary[$i]=" "
echo -en "\e[41;5m ${ary[@]}\e[;0m"
sleep 1
done
16.监控服务器网卡流量
#!/bin/bash
#network
#Mike.Xu
while : ; do
speedtime='date +%m"-"%d" "%k":"%M'
speedday='date +%m"-"%d'
speedrx_before='ifconfig eth0|sed -n "8"p|awk '{print $2}'|cut -c7-'
speedtx_before='ifconfig eth0|sed -n "8"p|awk '{print $6}'|cut -c7-'
sleep 2
speedrx_after='ifconfig eth0|sed -n "8"p|awk '{print $2}'|cut -c7-'
speedtx_after='ifconfig eth0|sed -n "8"p|awk '{print $6}'|cut -c7-'
speedrx_result=$[(speedrx_after-speedrx_before)/256]
speedtx_result=$[(speedtx_after-speedtx_before)/256]
echo"$speedday$speedtime Now_In_Speed: "$speedrx_result"kbps Now_OUt_Speed: "$speedtx_result"kbps"
sleep 2
done
17. 检测CPU剩余百分比
#!/bin/bash
#Inspect CPU
#Sun Jul 31 17:25:41 CST 2016
PATH=/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/wl/bin
export PATH
TERM=linux
export TERM
CpuResult=$(top -bn 1 | grep "Cpu" | awk '{print $5}' | sed 's/\..*$//g')
if [[ $CpuResult < 20 ]];then
echo "CPU WARNING : $CpuResult" > /service/script/.cpu_in.txt
top -bn 1 >> /service/script./cpu_in.txt
mail -s "Inspcet CPU" wl < /service/script/.cpu_in.txt
fi
18.检测磁盘剩余空间
#!/bin/bash
#Insepct Harddisk , If the remaining space is more than 80%, the message is sent to the wl
#Tue Aug 2 09:45:56 CST 2016
PATH=/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/wl/bin
export PATH
for RemainingSpace in $(df -h | awk '{print $5}' | grep -v 'Use' | sed -e 's/[%]//g')
do
if [[ $RemainingSpace > 80 ]];then
echo -e "$RemainingSpace"
echo -e "$(df -h | grep $RemainingSpace)" > /service/script/.HarddiskWarning
mail -s "disk Warning" wl < /service/script/.HarddiskWarning
fi
done
19. bash-实现检测apache状态并钉钉报警
#!/bin/bash
function trans_text(){
text=$1
curl 'https://oapi.dingtalk.com/robot/send?access_token=b4fcf5862088a1bc7f2bf66aea051869e62ff5879fa0e0fddb0db9b1494781c2' -H'Content-Type: application/json' -d'
{
"msgtype": "text",
"text": {
"content": "'"$text"'"
},
}'
}
function desk_check(){
dftype=$1
shell_row=`df |wc -l`
for i in `seq 2 $shell_row`
do
temp=(`df -h |head -n $i |tail -n 1 |awk '{print $5 "\t" $6}'`)
disk="`echo ${temp[0]} |cut -d "%" -f 1`"
name="${temp[1]}"
hostname=`hostname`
IP=`ifconfig |grep -v "127.0.0.1" |grep "inet addr:" |sed 's/^.*inet addr://g'|sed 's/ Bcas..*$//g'`
#echo -e "$disk $name"
Dat=`date "+%F %T"`
if [ $disk -ge $dftype ]
then
echo "
======================== \n
>磁盘分区异常< \n
主机名: $hostname \n
IP地址: $IP \n
分区名: $name \n
使用率: $disk %\n
发生时间: $Dat \n
========================= \n"
fi
done
}
function apache_check(){
url=$1
URL="http://$url/"
HTTP_CODE=`curl -o /dev/null -s -w "%{http_code}" "${URL}"`
if [ $HTTP_CODE != 200 ]
then
echo "
======================== \n
>Apache服务异常<
主机名: $hostname \n
IP地址: $IP \n
返回代码: $HTTP_CODE \n
发生时间: $Dat \n
========================= \n"
fi
}
while true
do
desk_check 10
apache_check 127.0.0.1
sleep 10
done
20.内存检测
#!/bin/bash
#Inspect Memory : If the memory is less than 500 , then send mail to wl
#Tue Aug 2 09:13:43 CST 2016
PATH=/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/wl/bin
export PATH
MEM=$(free -m | grep "Mem" | awk '{print $4}')
if [[ MEM < 500 ]];then
echo -e "Memory Warning : Memory free $MEM" > /service/script/.MemoryWarning
mail -s "Memory Warning" wl < /service/script/.MemoryWarning
fi
21.剩余inode检测
#!/bin/bash
#Inspcet Inode : If the free INODE is less than 200, the message is sent to the wl
#Tue Aug 2 10:21:29 CST 2016
PATH=/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/wl/bin
export PATH
for FreeInode in $(df -i | grep -v "Filesystem" | awk '{print $4}')
do
if [[ $FreeInode < 200 ]];then
echo -e "$(df -i | grep "$FreeInode")" > /service/script/.FreeInode
mail -s "FreeInode Warning" wl < /service/script/.FreeInode
fi
done
22.判断哪些用户登陆了系统
#!/bin/bash
declare -i count=0
while true;do
if who |grep -q -E "^wang"
then
echo -e "用户wang 登陆了系统\n 这是第$count 次!威信公众浩：wljsghq"
break
else
let count++
fi
sleep 3
done
~
示例：找出UID为偶数的所有用户，显示其用户名和ID号；
#!/bin/bash
while read line; do
userid=$(echo $line | cut -d: -f3)
if [ $[$userid%2] -eq 0 ]; then
echo $line | cut -d: -f1,3
fi
done < /etc/passwd
23.批量创建账号
#!/bin/bash
sum=1
while [ $sum -le 30 ]
do
if [ $sum -le 9 ]
then
user="user_0$sum"
else
user="user_$sum"
fi
useradd $user
echo "123456" |passwd --stdin $user
chage -d 0 $user
let sum=sum+1
done
24.批量扫面存活
#!/bin/bash
#By:lyshark
#nmap 192.168.22.0/24>ip
MAC=`cat ip |awk '$1 == "MAC" && $NF == "(VMware)"{print $3}'`
for i in `seq 1 20`
do
temp=`echo ${MAC[@]} |awk '{print $i}'`
IP=`cat /ip |grep -B5 $temp |grep "Nmap scan"|awk '{print $5}'`
echo $IP |awk '{print $1}'
done
25.正则匹配IP
^[0-9]{0,2}|^1[0-9]{0,2}|^2[0-5]{0,2}
egrep "(^[0-9]{1,2}|^1[0-9]{0,2}|^2[0-5]{0,2})\.([0-9]{1,2}|1[0-9]{0,2}|2[0-5]{0,2})\.([0-9]{1,2}|1[0-9]{0,2}|2[0-5]{0,2})\.([0-9]{1,2}|1[0-9]{0,2}|2[0-5]{0,2})$"
([0-9]{1,2}|1[0-9]{0,2}|2[0-5]{0,2})
([0-9]{1,2}|1[0-9]{0,2}|2[0-5]{0,2})
([0-9]{1,2}|1[0-9]{0,2}|2[0-5]{0,2})
([0-9]{1,2}|1[0-9]{0,2}|2[0-5]{0,2})
egrep "((25[0-5]|2[0-4][0-9]|((1[0-9]{2})|([1-9]?[0-9])))\.){3}(25[0-5]|2[0-4][0-9]|((1[0-9]{2})|([1-9]?[0-9])))"
ls |egrep "((25[0-5]|2[0-4][0-9]|((1[0-9]{2})|([1-9]?[0-9])))\.){3}(25[0-5]|2[0-4][0-9]|((1[0-9]{2})|([1-9]?[0-9])$))"
26.正则匹配邮箱
egrep "^[0-9a-zA-Z][0-9a-zA-Z_]{1,16}[0-9a-zA-Z]\@[0-9a-zA-Z-]*([0-9a-zA-Z])?\.(com|com.cn|net|org|cn)$" rui
ls |egrep "^(([1-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9][0-9]|2[0-4][0-9]|25[0-4])$"
27.实现布片效果
#!/bin/bash
function ary_go
{
$1 $2
for (( i=0;i<=$1;i++ ))
do
for (( s=0;s<=$2;s++ ))
do
if [ $[$i%2] == 0 ]
then
if [ $[$s%2] == 0 ]
then
echo -en " "
else
echo -en "\e[;44m \e[;m"
fi
else
if [ $[$s%2] == 0 ]
then
echo -en "\e[;42m \e[;m"
else
echo -en " "
fi
fi
done
echo
done
}
ary_go 25 50
28.剔除白名单以外的用户
#!/bin/bash
w | awk 'NR>=3 {printf $1 "\t" $2 "\t" $3 "\n"}' > /tmp/who.txt
for i in $(awk '{printf $1}' /tmp/bai.txt)
do
k=$(egrep -v "$i" /tmp/who.txt | awk '{printf $2} "\n"' | awk '{printf $2 "\n"}')
for j in $k
do
pkill -9 -t "$j"
done
done
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