ShellCheck


finds bugs in your shell scripts.
You can cabal, apt, dnf, pkg or brew install it locally right now.
Paste a script to try it out:
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#!/bin/sh
DUMP=mongodump
OUT_DIR=/data/backup/mongod/tmp     // 备份文件临时目录
TAR_DIR=/data/backup/mongod         // 备份文件正式目录
DATE=`date +%Y_%m_%d_%H_%M_%S`      // 备份文件将以备份时间保存
DB_USER=Guitang                     // 数据库操作员
DB_PASS=qq____________              // 数据库操作员密码
DAYS=14                             // 保留最新14夭的备份
TAR_BAK="mongod_bak_$DATE.tar.gz"   // 备份文件命名格式
cd $OUT_DIR                         // 创建文件夹
rm -rf $OUT_DIR/*                   // 清空临时目录
mkdir -p $OUT_DIR/$DATE             // 创建本次备份文件夹
$DUMP -d wecard -u $DB_USER -p $DB_PASS -o $OUT_DIR/$DATE  // 执行备份命令
tar -zcvf $TAR_DIR/$TAR_BAK $OUT_DIR/$DATE       // 将备份文件打包放入正式目
find $TAR_DIR/ -mtime +%DAYS -delete             // 删除14天前的旧备洲
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