ubuntu16.04快照工具TimeShift安装与使用

Timeshift只保护系统文件和设置。

默认情况下，将排除用户主目录的全部内容，也就是说不会保护用户数据。即：对用户安装的应用可以恢复到快照时间点，但是用户的文档、图片、音乐等文件不会恢复。

User Data is Excluded by Default
Timeshift is designed to protect system files and settings. It is NOT a backup tool and is not meant to protect user data. Entire contents of users' home directories are excluded by default. This has two advantages:

You don't need to worry about your documents getting overwritten when you restore a previous snapshot to recover the system.
Your music and video collection in your home directory will not waste space on the backup device.
You can selectively include items for backup from the Settings window. Selecting the option "Include hidden items" from the Users tab will backup and restore the .hidden files and directories in your home folder. These folders contain user-specific config files and can be included in snapshots if required.

Note: It is not recommended to includ