这 28 个值得收藏的 shell 脚本能让你每天摸鱼近 7 个小时！
发布于: 8 小时前
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 truedo
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 $Ip_Addr done
sleep 10done
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2. 一台监控主机，一台被监控主机。被监控主机分区使用率大于 80%，就发告警邮件。放到 crontab 里面，每 10 分钟执行一次
#！/bin/bash
FSMAX="80" remote_user='root' remote_ip=(IP地址列表) ip_num='0'
while [ "$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
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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
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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
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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.txtecho "Data Size: $SIZE" >> /tmp/dbinfo.txtcd /opt/dbbak &> /dev/null || mkdir /opt/dbbaktar zcf /opt/dbbak/mysqlbak-${DAY}.tar.gz /var/lib/mysql /tmp/dbinfo.txt &> /dev/nullrm -f /tmp/dbinfo.txt
crontab-e55 23 */3 * * /opt/dbbak/dbbak.sh
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6.打印彩虹
declare -a ary
for i in `seq 40 49`do
ary[$i]=" " echo -en "\e[$i;5m ${ary[@]}\e[;0m" done
declare -a aryfor s in `seq 1 10000`do for i in `seq 40 49` do ary[$i]=" " echo -en "\e[$i;5m ${ary[@]}\e[;0m" donedone
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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
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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 "$passwd\r" }
}
#expect "*from*"
#send "mkdir -p ./tmp/testfile\r"
#send "exit\r"
#expect "#" #i# 命令运行完, 你要期待一个结果, 结果就是返回shell提示符了(是# 或者$)
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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 httpddo MyInstall $insdone
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12.shell 实现插入排序
#!/bin/bash
declare -a array
for i in `seq 1 10`do array[$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[@]}"
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13.bash 实现动态进度条
#!/bin/bashi=0bar=''index=0arr=( "|" "/" "-" "\\" )
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+='#' cleardone
printf "\n"
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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 [ $? -eq 0 ] then echo -e "账号创建成功!" else echo -e "创建失败!" fi
done
done
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15. 红色进度条
#!/bin/bash
declare -a ary
for i in `seq 0 20`do
ary[$i]=" " echo -en "\e[41;5m ${ary[@]}\e[;0m" sleep 1 done
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16.监控服务器网卡流量
#!/bin/bash#network#Mike.Xuwhile : ; dospeedtime='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 2speedrx_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: "$speedtx_result"kbps"sleep 2done
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17. 检测 CPU 剩余百分比
#!/bin/bash
#Inspect CPU
#Sun Jul 31 17:25:41 CST 2016
PATH=/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/wl/binexport PATH
TERM=linuxexport TERM
CpuResult=$(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.txtfi
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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 fidone
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19. bash-实现检测 apache 状态并钉钉报警
#!/bin/bash
function trans_text(){ text=$1curl 'https://oapi.dingtalk.com/robot/send?access_token=b4fcf5862088a1bc7f2bf66aea051869e62ff5879fa0e0fddb0db9b1494781c2' -H'Content-Type: application/json' -d'{ "msgtype": "text", "text": { "content": "'"$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" fidone}
function apache_check(){ url=$1URL="http://$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: $Dat \n ========================= \n" fi}
while truedo desk_check 10 apache_check 127.0.0.1
sleep 10done
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20.内存检测
#!/bin/bash
#Inspect Memory : If the memory is less than 500 , then send mail to wl
#Tue Aug 2 09:13:43 CST 2016
PATH=/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/home/wl/bin
export PATH
MEM=$(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/.MemoryWarningfi
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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 "$FreeInode")" > /service/script/.FreeInode mail -s "FreeInode Warning" wl < /service/script/.FreeInode fidone
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22.判断哪些用户登陆了系统
#!/bin/bash
declare -i count=0
while true;do
if who |grep -q -E "^wang" then echo -e "用户wang 登陆了系统\n 这是第$count 次!威信公众浩：wljsghq" break else let count++ fi
sleep 3done~
示例：找出UID为偶数的所有用户，显示其用户名和ID号；
#!/bin/bashwhile read line; do userid=$(echo $line | cut -d: -f3) if [ $[$userid%2] -eq 0 ]; thenecho $line | cut -d: -f1,3 fidone < /etc/passwd
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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
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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 $1}'done
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25.正则匹配 IP
^[0-9]{0,2}|^1[0-9]{0,2}|^2[0-5]{0,2}
egrep "(^[0-9]{1,2}|^1[0-9]{0,2}|^2[0-5]{0,2})\.([0-9]{1,2}|1[0-9]{0,2}|2[0-5]{0,2})\.([0-9]{1,2}|1[0-9]{0,2}|2[0-5]{0,2})\.([0-9]{1,2}|1[0-9]{0,2}|2[0-5]{0,2})$"
([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])$))"
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26.正则匹配邮箱
egrep "^[0-9a-zA-Z][0-9a-zA-Z_]{1,16}[0-9a-zA-Z]\@[0-9a-zA-Z-]*([0-9a-zA-Z])?\.(com|com.cn|net|org|cn)$" 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])$"
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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
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28.剔除白名单以外的用户
#!/bin/bashw | awk 'NR>=3 {printf $1 "\t" $2 "\t" $3 "\n"}' > /tmp/who.txtfor 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" donedone
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发布于: 8 小时前阅读数: 6
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