1.  backup file
2.  back file

• 1. 备用文件: backup file | standby file | back file
• 2. 用于备份文件: sudo cp | apt | etc

• 1.备用文件粉碎机可以删除数据对您的硬盘上，并在同一时间覆盖在驱动器上的可用空间，所以不能恢复已删除的文件。
  Standby file pulverizer can delete the data on your hard disk, and at the same time covering the space available on the drive, so you cannot recover deleted files.
  dict.yoduao.com
• 2.接下来的文章向您展示了如何创建对应于SQL SQuirreL的四个脚本：三个特殊的任务和一个安装备用文件来集中那些任务。
  The next article shows you how to create four scripts against SQL SQuirreL: three specific tasks and one shell to aggregate those tasks.
  dict.yoduao.com
• 3.这样可以确保将恢复的文件放到备用的目录，而不是运行中的某个位置。
  This ensures that recovered files can be put into a spare directory, and not the live location.
  dict.yoduao.com

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