Linux Shell 常用脚本

• • • 轮询检测Apache状态并启用钉钉报警
    • 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。
    • 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
    • 实现FTP自动上传
    • mysqlbak.sh备份数据库目录脚本
    • 打印彩虹
    • 打印菱形
    • expect实现远程登陆自动交互
    • http心跳检测
    • PV过量自动实现防火墙封IP
    • shell实现自动安装
    • shell实现插入排序
    • bash实现动态进度条
    • 根据文件内容创建账号
    • 实现红色进度条
    • 监控服务器网卡流量
    • 检测CPU剩余百分比
    • 检测磁盘剩余空间
    • bash-实现检测apache状态并钉钉报警
    • bash实现内存检测
    • 剩余inode检测
    • 判断哪些用户登陆了系统
    • 批量创建账号
    • 批量扫面存活
    • 正则匹配IP
    • 实现布片效果
    • 剔除白名单以外的用户

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
           

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
           

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"   [email protected]  
fi  
           

实现FTP自动上传

#! /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
           

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
           

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
           

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
           

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$)
           

http心跳检测

URL="http://192.168.22.191/index.html"

THHP_CODE=`curl -o /dev/null -s -w "%{http_code}" "${URL}"`
 
if [ $HTTP_CODE != 200 ]
then
    echo -e "apache code:"$HTTP_CODE""
fi
           

PV过量自动实现防火墙封IP

#!/bin/bash

log=/tmp/tmp.log
 
[ -f $log ] || touch $log
 
function add_iptales()
{
        while read line
        do
                ip=`echo $line |awk '{print $2}'`
                count=`echo $line |awk '{print $1}'`
                        if [ $count -gt 100 ] && [ `iptables -L -n |grep "$ip" |wc -l` -lt 1 ]
                                then
                                        iptables -I INPUT -s $ip -j DROP
                                        echo -e "$list isdropped">>/tmp/droplist.log
                        fi
 
        done<$log
}
 
 
 
function main()
{
        while true
        do
                netstat -an|grep "EST" |awk -F '[:]+' '{print $6}'|sort |uniq -c >$log
                add_iptales
                sleep 180
        done
 
}
 
 
main
           

shell实现自动安装

#!/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
           

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[@]}"
           

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"
           

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!"
                        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
           

实现红色进度条

#!/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
           

监控服务器网卡流量

#!/bin/bash

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
           

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
           

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
           

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
           

bash实现内存检测

#!/bin/bash

#Inspect Memory : If the memory is less than 500 , then send mail to wl
 
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
           

剩余inode检测

#!/bin/bash

#Inspcet Inode : If the free INODE is less than 200, the message is sent to the wl
 
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
           

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!"
                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
           

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
           

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
           

正则匹配IP

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])$"
           

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
           

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
           

转载于https://www.cnblogs.com/LyShark/p/10221775.html