How to back up files in linux

First we need to create a backup script, open the terminal, enter touch /home/beifen.sh, and click the Enter key

# #After the file is created, enter the file, enter vi /home/backup.sh, and click the Enter key

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Enter in the opened script:

#！/bin/sh
mkdir /home/beifen
#创建一个临时文件（要保存备份的路径）
cp -r /home/backups/balalala  /home/beifen
#数据存在backups目录下，备份到beifen目录下，所以先将数据拷过来
tar -zcPvf /home/backup$(date +%Y%m%d).tar.gz /home/beifen
 #将数据所在文件夹beifen打包
rm -rf /home/beifen/
 #删除临时文件内容
find ./ -mtime +30 -name "*.tar.gz" -exec rm -rf {} \;
#删除改文件夹下超过30天的文件

Enter sh /home/beifen.sh again in the terminal, click the Enter key to enable the script

Enter crontab -e in the terminal, click the Enter key, and then enter 0 0 /10 * sh /home/beifen.sh, here refers to executing the beifen.sh script every 10 days

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