Automatic Backup and Regular deletion of backup in linux

In linux, automatic backup and Regular deletion of backup-Linux Enterprise Application-Linux server application information are provided. For more information, see the following section. Author: yitianya
Today, I just saw a buddy in the group sending such a question on qq, and it feels useful. After asking a few friends from other groups, it's basically done. Write it here for notes.

Question requirements:
Back up all files under/etc to/home/backup every PM. Only the last seven backups are retained. Write process!

1. Write the crontab file.
30 1 ***/root/myshell

2. write the script file/root/myshell.

CODE :#! /Bin/bash Tar czvf/home/backup/bak.tar.gz/etc Mv/home/backup/bak.tar.gz bak 'date when using f'.tar.gz Find/home/backup-mtime 7-type f-exec rm {}\;