124 lines
2.0 KiB
Bash
124 lines
2.0 KiB
Bash
#### 检测 Web 服务器
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新建文件 `vim ~/http.sh` 写入以下内容
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```sh
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#!/bin/bash
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ip=xxxxxx #自定义
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port=$(nmap -sT $ip | grep tcp | grep http | grep 80 | awk '{print $2}')
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if [ "$port" == "" ]; then
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systemctl restart nginx
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echo "http error $(date +%Y-%m-%d' '%H:%M:%S)" >> ~/http_logs_error.log
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fi
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```
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设置定时任务
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```sh
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*/10 * * * * ~/http.sh #10分钟执行一次
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```
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---
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#### 检测指定服务是否正常运行
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新建文件写入以下内容
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```sh
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#!/usr/bin/env bash
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read name
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pgrep $name > /dev/null
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if [ $? -gt 0 ];then
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echo "`date` $name is stop" >> ~/mysql_listen.log
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systemctl $name mysql
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else
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echo "`date` $name running" >> ~/mysql_listen.log
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fi
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```
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给脚本添加执行权限后运行，输入服务名称即可
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---
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#### 备份数据库
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新建文件 `vim ~/mysqldump.sh` 写入以下内容
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```sh
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#!/bin/bash
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dir=~/data_bak #自定义
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filename=demo #自定义
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username=nick #自定义
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password=xxx #自定义
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database=demo #自定义
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if [ -d $dir ]; then
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mysqldump -u$username -p$password $database | gzip > $dir/$filename\_$(date +%Y%m%d).sql.gz
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else
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mkdir $dir
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mysqldump -u$username -p$password $database | gzip > $dir/$filename\_$(date +%Y%m%d).sql.gz
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fi
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```
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设置定时任务
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```sh
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1 3 * * 0 ~/mysqldump.sh # 每周日凌晨3点1分执行
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```
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补充：新建的 `shell` 脚本默认没有执行权限，需要自己添加
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---
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#### 获取文件名
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```sh
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#!/bin/bash
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file_jpg="sample.jpg"
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name=${file_jpg%.*}
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echo File name is: $name
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```
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---
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#### 获取文件扩展名
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```sh
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#!/bin/bash
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file="sample.png.text"
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echo ${file##*.} #贪婪模式，匹配到最后一个 .
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```
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---
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#### 重命名文件
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```sh
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#!/bin/bash
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count=1;
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for file in $(find . -maxdepth 1 -type f -iname '*.html')
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do
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new_file=filename-$count.${file##*.}
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echo "Renaming $file to $new_file"
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mv "$file" "$new_file"
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let count++
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done
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```
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expect 自动输入密码登录服务器
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```sh
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#!/usr/bin/expect
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spawn ssh username@ip
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expect "password:"
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send "your_password\r"
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interact
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``` |